Endorsed by Which?

Sustain Heating and Renewables Ltd

4.9

60 Reviews

Opening Hours
Today -
  • Monday 09:00–19:00
  • Tuesday 09:00–19:00
  • Wednesday 09:00–19:00
  • Thursday 09:00–19:00
  • Friday 09:00–19:00
  • Saturday - Closed
  • Sunday - Closed

Why you can trust this trader

After undergoing rigorous assessment to become endorsed, every Which? Trusted Trader agrees to our Code of Conduct. This gives consumers the reassurance that they have the best possible protection and adds an extra layer of security to ensure best practices and procedures are followed. Which? fully investigates any breaches and will take any necessary action to ensure consumer protection.

About

Sustain Heating and Renewables are an independent heating and renewables installer serving the South and South West. We have over 20 years experience working within the industry and when Sustain was set up we had one clear Ethos:

Everything we do is Customer Focused.

From taking your enquiry, through fitting your system you will receive a personal service from us. We aim to deliver a five-star service as standard. To deliver a consistent level of service our staff share in the same company ethos. Everyone has a keen interest in delivering the best service possible and we have built a team that goes that extra mile every day.

As we are an independent company, we are not tied to any one product. This means we can research the market and always recommend the best product for your requirements. Every system is bespoke doing the job right means you get a successful install with the comfort of a 10 year independent workmanship warranty.

What we do

  • Renewable energy

    • Air source heat pumps
    • Solar Panel Maintenance
    • Solar water heating
    • Solar panels
    • Ground source heat pumps
    • Home energy analysis
  • Heating contractors

    • Automated Heating
    • Central heating systems (installation and servicing)
  • More Services

    • battery storage solutions
    • solar pv
    • heat pump maintenance

Customer reviews

Why you can trust these reviews

All reviews are verified as being genuine and a true customer of this trader.

How can we be so sure?

100% of the reviews we publish have been through our stringent moderation process.

4.9
60 reviews
Customer Service
5.0
Quality
5.0
Value
4.8
Sort by
Solar Panel Installation
Customer Service
Quality
Value
The design and discussion of my PV system with Peter, the installation by Daniel and Scott through to the commissioning by Will has happened without any problem, damage or issue. A long discussion of my requirements and a detailed Q&A session led to agreeing an 18 panel system spread over two roofs with external batteries and inverter. The price was agreed, the date set and the system was installed over three days, as planned. Their attention to detail placed the panels centrally on the roofs so they look as good as they can and the electrical cabling and various boxes installed with a minimum of fuss. We are pleased with our PV system, believe it was value for money and feel it was a much easier process than we expected. I have no hesitation in recommending Sustain and should add an addendum to this review in a year's time to reflect on whether the performance reaches our expectations. For info: we have a 1954 detached house
Customer in Bristol City Posted on 06/11/2024 , work completed 25/10/2024
Sustain Heating and Renewables installation of air source heating system, with removal of a gas boiler
Customer Service
Quality
Value
Sustain Heating did an amazing job fitting the Air source heat pumps, replacing the old radiators with new efficient ones, removing the old gas boiler. It wasn’t an easy job in my stone-built 400 year old house on 4 floors, and they dealt with the unexpected problems with ease. They were great communicators and it was a really positive experience having them do this very complex installation
Customer in South Gloucestershire Posted on 10/10/2024 , work completed 20/09/2024
Very competent and professional Company
Customer Service
Quality
Value
I was particularly concerned about installing an ASHP as there are many horror stories and much misinformation flying around. I met Sustain Heating at the Malvern Show and was encouraged by their approach and knowledge. We had quite a few visits from Sustain prior to the installation to ensure everything was in order. I was particularly impressed with the manner in which they ensured we were aware of all the safeguards and processes they have in place to ensure that the system is reliable and efficient. The installation proved a challenge but at no time did I feel that the guys didn't have a grip on it. They kept me informed throughout the process. What I found encouraging was that all their fitters, none of whom were sub-contact, were fully trained and were able to answer all my queries. The system is up and running and, although early days, I am happy with the outcome. I have been particularly impressed with the manner in which my subsequent queries have been dealt with. I have no hesitation in recommending this company.
Customer in Wiltshire Posted on 02/10/2024 , work completed 02/10/2024
Professional and efficient
Customer Service
Quality
Value
We have waited a year before writing this review. We had solar panels and battery fitted and have been delighted with the performance of the system. Saved hundreds of pounds in the first year. Dealing with Sustain was a painless experience. The initial meeting with Peter was informative and all of my wife's extensive(!) questions were dealt with. The scaffolding was put up without fuss. We did have to push for it to be taken down (3 weeks after installation). A minor hassle. The guys who installed the panels were heroes! Torrential rain, but they stuck at it. Done in a day. The inverter was installed and set up two days later, along with the boost for the water tank. Neat and tidy. Up and running in less than a week! Very pleased with any responses we have had to queries about the system, made us feel that we were being looked after. All in all I would not hesitate to recommend Sustain as an efficient and highly professional company
Customer in Somerset Posted on 02/10/2024 , work completed 03/08/2023
Extremely competent and efficient heat-pump installers
Customer Service
Quality
Value
Sustain were contracted to replace our solid fuel system with a heat pump. We already had underfloor pipework, so this was basically disconnecting the solid fuel system and replacing it with a heat pump system. It included replacing an existing thermal store with a heat-pump cylinder and replacing the old underfloor manifold ( which was faulty) and then running pipework to connect up the new system. All was accomplished in 10 working days as had been predicted (it was quite a big job) and finished in an exemplary manner. On more than one occasion there were 3 vans on the drive with the Sustain guys working around each other. Of particular value was the fact that Sustain were happy to fit around our timing plans, which were complicated by an unexpected occurrence. I'd have no hesitation in recommending them, but since I found them through Which Trusted Traders, this doesn't surprise me.
Customer in Posted on 24/07/2024 , work completed 15/05/2024
Highly Recommended
Customer Service
Quality
Value
When I reached out to Sustain in the summer of 23, I wanted solar on one side of the house. This proved difficult based on the roof layout so I cancelled the order. They convinced me using both sides would still give me the results I wanted. We went ahead with the 5.6kw system with panels dotted all over the roof and garage roof. I had a SMETS2 meter installed by Octopus Energy in January 24 and since then I haven't received an energy bill, instead they pay me (from Feb onwards). With the help of Sustain I have future proofed the house with very low or non existent electricity bills. The lads who installed the system were respectful of the property and did an excellent job. I couldn't be happier with my Enphase solar system.
Customer in Bath and North East Somerset Posted on 10/05/2024 , work completed 20/10/2023
Excellent renewable heating and power suppliers
Customer Service
Quality
Value
Sustain did a total heating system conversion for us, replacing 2 gas boilers with a Grant ASHP and MyEnergi Libbi solar PV battery storage, including 2 EV charging points. Everything from initial consultation to to the installation and commissioning has been 5 star. The crews were incredibly professional and the work completed to a very high standard. Sustain were great at keeping us informed and even managed to complete the project ahead of schedule. I would highly recommend Sustain for all your renewable heating and energy needs.
Customer in North Somerset Posted on 06/05/2024 , work completed 12/04/2024
Excellent company
Customer Service
Quality
Value
Excellent company. Heat pumps, solar PV and solar thermal all installed professionally and competently. Very pleased that the heat loss survey was done prior to heat pump installation to ensure that the system will meet our heating needs.
Customer in Wiltshire Posted on 02/05/2024 , work completed 05/04/2024
More than just a new ASH pump
Customer Service
Quality
Value
I have no hesitation in recommending Sustain. They know what they are doing, helpful, quick to respond and professional. It's a big deal having a totally new system installed in to your home and they take you though it step by step, always ok with answering lots of questions. It's very new and they are still available for aftercare. Thank you Sustain
Customer in Worcestershire Posted on 30/04/2024 , work completed 13/04/2024
Excellent Heat Pump installation
Customer Service
Quality
Value
We recently decided to remove our 20 year old oil fired heating and hot water system and install an Air Sourced Heat pump. Researching which company to use is time consuming and at times confusing. We approached a total of 5 companies for a quote. All except Sustain gave us a figure down to the nearest pound, with either no visit to the house or a cursory sales pitch on site. Sustain stand out as the only company to insist on a comprehensive third party heat loss survey being carried out before designing a bespoke system, schedule of works and quotation. It was this systematic and logical approach, together with the approachability and professionalism of everyone involved that convinced us to go with Sustain. The resulting installation has been completed to an extremely high standard by a most friendly team who clearly know exactly what they are doing. There have been a few “snagging” issues but all have been satisfactorily resolved with the minimum of fuss. The heat pump warms the house beautifully and we have a plentiful supply of hot water. Sustain is an extremely well run company with a family feel. Not too big so that you are just a number but with just the right economy of scale. The company owner even visited himself to explain the schedules of works and was always on hand to help the system settle down. I cannot recommend Sustain highly enough and would strongly urge anyone thinking of installing a heat pump to use them.
Customer in Somerset Posted on 18/04/2024 , work completed 18/04/2024
A Great Experience
Customer Service
Quality
Value
I had Solar panels and a battery installed by Sustain. They were very good in sales information, giving me all the information that I needed to know and what differentiated them from their competition. I chose them over a rival and was not disappointed. The work was carried out over the two days as promised (although the scaffolding was left for over a week, apparently they contract out fitters). Been very happy since installation. Great customer's service, especially when I wanted to understand what was going on and how to calibrate it to my own needs.
Customer in Wiltshire Posted on 03/04/2024 , work completed 18/10/2023
Effective planning and installation of my solar system
Customer Service
Quality
Value
Sustained Heating and Renewables installed my solar panels, batteries and inverter in July 2023. The detailed planning and discussion of options were thorough and informative, and I am confident we found the best possible solution for my situation. From then on Sustain handled the planning application and all the necessary prior to installation. The installation itself, was quick and very professional. Others have since commented on the thorough work done. Since the installation my electricity has cost virtually nothing, as the panels have delivered enough electricity for my needs and allowed me to export sufficient electricity to cover the standing charge in all but the darkest months (November to February). I can thoroughly recommend the company. Their quote was competitive (if not the absolutely cheapest), but what won me over was the long guarantees for the installation and the attention to detail during the planning process.
Customer in Wiltshire Posted on 03/04/2024 , work completed 13/07/2023
Fabulous job, highly recommended
Customer Service
Quality
Value
So very pleased we used Sustain Heating and Renewables for our solar upgrade. We had a false start with another company who turned out to be terrible, so started off nervous, but everyone we dealt with at Sustain were welcoming and reassuring. They took time to go through all our concerns and everything we wanted and translated it into a bespoke system. The team did a thorough and excellent job, including removing and disposing of the old system, meticulously patching and repairing the roof and installing new panels and batteries and all the electrical gubbins to make it work. The whole team were extremely professional and delightful to have around and they all clearly knew exactly what they were doing so were able to explain every step. All of them clearly took great pride in their work – a refreshing change from contractors simply following instructions. And Daniel was always at the end of the phone to answer any additional questions, and still is as we get used to the new system. We now have a top-class system that generates electricity even on a dull day, heats our water, charges our electric car and lets us control it all from an app on our phones. We would urge people to beware of inadequate companies hiding behind glossy brochures who turn out to be incompetent. Sustain Heating and Renewables are a fabulous small family business who have done an excellent job for us and we highly recommend them.
Customer in Powys Posted on 20/03/2024 , work completed 08/03/2024
Superb Heat Pump installation by excellent company: Results in lovely warm house
Customer Service
Quality
Value
We chose Sustain for our heat pump because (a) we were delighted by their installation of solar panels for us and (b) they were the only local firm prepared to fit a Viessmann R290 pump, top-quality German engineering. The team fitting our system had just been trained by Viessmann. Although Sustain would have provided us with heaters, we chose to rent locally. We popped in almost daily and were most impressed by the care taken by the team, and at conclusion, the house was left spotless. After 8 days of no heat, it took 2-3 days to bring the house to a lovely temperature everywhere. Sustain's calculations of which radiators needed enhancing have proved spot-on. Hot water is plentiful and shower pressure excellent. We live in a dormer bungalow with low eaves, and we could have been better forewarned that this would mean a vast array of exposed pipes from the quite elegant tank enclosure. The pipes have now been beautifully covered by a local curtain firm, but are still accessible for service. The large and amazingly quiet pump is outside and we have planted trees on either side to encourage birds and butterflies. The system is controllable world-wide by an uncomplicated smart-phone App, and by thermostatic radiator valves. it's too early to comment on running costs, but as heat pumps are much more efficient than gas boilers, we expect significant annual savings, while doing our bit to save the planet for our grandchildren and yours. We highly recommend Sustain.
Customer in North Somerset Posted on 14/03/2024 , work completed 29/01/2024
Perfect PV installation
Customer Service
Quality
Value
Sustain installed a 16 panel PV and battery storage system last month, and it is perfect. From the initial sales visit through to the quote to installation (in 4 weeks, the largest delay was waiting for grid approval) the whole process was smooth and efficient. Particular shout out to installers Callum & Scott and electrician Lucasz who were professional, friendly and helpful, consulting us an all aspects of the layout etc. We have no hesitation in recommending this company.
Customer in Somerset Posted on 07/03/2024 , work completed 09/02/2024
Heatpump Installation
Customer Service
Quality
Value
I recently had an upgrade of my heating system to an Air Source Heatpump. After much research I went with Sustain Heating and I am very glad I did. From the very outset I could tell that I was in safe hands and everything was explained clearly. The teams (plumbers,electricians) who came to do the work were a great bunch and left everything clean and tidy. The system has been in for just over 2 weeks now and I could't be more happy. A minor glitch at the outset was sorted out quickly and I know that if I should experience any problems or concerns that I can call Sustain at any time. So nice to find a company with proper values and customer service! Date of experience: 19 February 2024
Customer in Bath and North East Somerset Posted on 01/03/2024 , work completed 19/02/2024
Excellent installation and after care.
Customer Service
Quality
Value
Sustain have installed a co-ordinated system for our house, incorporating an Air Source Heat Pump, existing solar panels, 2 x 5v batteries, a car charger and all the necessary controls. Everything works seamlessly. They have been, polite, careful, professional, skilled and competent and really care about our system. We are so glad we chose them and are confident that they will sort out any problems should they arise. Many thanks.
Customer in Somerset Posted on 09/01/2024 , work completed 08/01/2024
Great Solar Panels and Battery Work & Aftercare
Customer Service
Quality
Value
Sustain's fitting and aftercare for our PV system and batteries have been outstanding. The personal care and monitoring of the system has been exceptional and response to any questions or issues has been prompt. Also, you generate electricity and save money.
Customer in Somerset Posted on 09/11/2023 , work completed 31/03/2023
Heat Pump installation
Customer Service
Quality
Value
We are really pleased with the work that has been carried and the pump is doing a great job although it's not winter yet, obviously, but we've tested it and the heat is good as is the water heat and flow. The work was a little later getting started that we were expecting but once the guys were here they did a fantastic job and worked incredibly hard turning up first thing in the morning and often working through lunch. I've had bad experiences with contract workers - builders etc. in the past - bunking off to other jobs but not in this case. It was a difficult job as it was for the main house and annexe and so a lot of pipe work and ground work. A huge channel had to be dug and a lot of mess dragged out and I thought it would be left behind but no, everything was taken away and it is as good as new. All of the packaging too was taken away and you'd never know anyone had been here working. There were a couple of small hiccups but all sorted. I've had to make contact with the company a couple of times to ask questions and these have been answered quickly. I can't fault the guys doing the job.
Customer in South Gloucestershire Posted on 28/07/2023 , work completed 19/07/2023
Excellent work
Customer Service
Quality
Value
We chose Sustain to install an air source heat pump for central heating and hot water after going through a list of firms provided by Vaillant (we had a Vaillant gas boiler at the time) and having site visits by three firms. We chose Sustain as the best without having read reviews, but these confirmed our decision. The installation was done over six months after we signed the contract and paid a deposit, but this was mainly because we did not want it done in the depths of winter. The work was carried our efficiently, and with consideration for the elderly homeowners (my wife and myself) Given that the firm was replacing an existing gas central heating system in a 400-year-old house the job was done even more satisfactorily than we expected, and our worries beforehand proved unnecessary. It took a little longer than anticipated, but snags had to be overcome, and two weekends and two bank holidays intervened. Our only criticism is that some new pipework holes were not made good - a minor point. The men were helpful and kept us informed throughout. So far we have been very pleased with Sustain. The real test of the system will come next winter!
Philip in South Gloucestershire Posted on 14/07/2023 , work completed 10/05/2023
Trustworthy, fair and good at what they do
Customer Service
Quality
Value
We have had Sustain out to fit our air source heat pump initially (in Dec 2021) and then to install Solar PV with battery storage (in May 2023). On both installations they have proven to be experts at what they do and treat the customer with utmost care. With the heat pump, the installation guys retrofitted into an existing gas system which involved replacing some pipework and adding some larger radiators following recommendations from a heat calculation survey prior to the installation. This, along with the heat pump Sustain advised for us, meant that we now have an efficient and eco-friendly (with the 100% renewable energy electricity tariff we are on) means of heating our home. Sustain were brilliant throughout the whole process, with spot on products chosen for the job and constant communication from the installers throughout the process. We then looked to install solar PV and batteries to further improve our home's green credentials. We didn't hesitate to chose Sustain again for this and we weren't disappointed. The installers were knowledgable of their trades and were friendly and spent time going through what was being done to ensure we were kept in the loop. Aftercare has been fantastic too. Minor teething issues with our heatpump soon after it was installed were dealt with immediately by Sustain sending out a technician the same day when it was apparent we needed an expert to look into it further. Highly recommend this company!
Customer in Somerset Posted on 27/05/2023 , work completed 09/05/2023
Couldn’t be more chuffed I went with Sustain!
Customer Service
Quality
Value
After getting quotes from 7 of their competitors, I decided to go with Sustain, and am very glad I did! All stages of the process was flawless, from initial planning, installation and support on how to optimise the use of my solar system. Highly recommended
Customer in Bristol City Posted on 14/05/2023 , work completed 18/04/2023
Extremely professional job and brilliant customer service
Customer Service
Quality
Value
I chose Sustain to install solar panels and air source heating. They were prompt to respond to my enquiry and within 6 weeks my order was submitted. This compared to 2 other companies I made enquiries with who took nearly 6 months to respond and 2 months to reply to any emails! Sustain have been superb from the beginning. Arranging timely appointments to view, assess, discuss options etc. Once signed up they completed and submitted all relevant paperwork from beginning to end. The installations were separate. The solar panels were first, fitted in one day in January and the final electric connections, including 2 batteries, completed 10 days later. No disruption. A run through of the app and how to monitor my solar power completed at the same time. Excellent. The air source was initially planned for late February but that did change to the 2 weeks over Easter. During the intervening time I was kept informed and as mine was a retrofit there were a number of visits to check proposed pipe runs, tank sitings, radiator suitability etc. There was a lot to do but by the Thursday after Easter , with minimum disruption, my heating system was fully commissioned and I had been briefed on how best to run my system to suit me. There were follow up visits after installation to check I was happy with how things worked and everything was okay. I can also call anyone of 4 people to get advice at anytime. I have already recommended Sustain to 3 other people and will continue to do so.
Customer in North Somerset Posted on 09/05/2023 , work completed 13/04/2023
Solar Panels and Battery Storage
Customer Service
Quality
Value
Highly recommended. A smooth installation by a conscientious and friendly team including the scaffolders, panel fitters and electrician. All completed in a timely fashion with minimal disruption and no glitches or hidden costs.
Customer in North Somerset Posted on 08/05/2023 , work completed 28/03/2023
Solar PV installation
Customer Service
Quality
Value
I would definitely recommend Sustain Heating and Renewables. They have recently installed a solar PV system to our property and have been very professional throughout. When there was a problem with the inverter post installation, it was dealt with quickly and the issue has now been resolved with a new inverter fitted under warranty.
Customer in North Somerset Posted on 24/04/2023 , work completed 24/03/2023
Heat pump first winter review
Customer Service
Quality
Value
We have just been through our first winter with a Vaillant Arotherm Plus air source heat pump installed by Sustain last June. I am pleased to say that our home has been warm and comfortable throughout the past winter and we have always had plentiful hot water, even when visitors have been staying. I think this is the mark of a well-designed and well-installed system. After-sales service to sort out two very minor snags was excellent and Sustain responded to my call very quickly even though it was the beginning of winter and the company was very busy at the time. I thoroughly recommend Sustain Plumbing and Heating.
Customer in Bristol City Posted on 15/03/2023 , work completed 15/06/2022
Solar PV Installation
Customer Service
Quality
Value
I am pleased to write a positive review for Sustain Heating, investing quite a lot of money on a system I was fairly unfamiliar with was a bit nerve wracking. My worries turned out to be completely unfounded, Sustain Heating completed the installation with the following positive points and no negative points. There were no hidden costs, the price quoted was the price paid. The work was carried out on the promised schedule with small amendments closer to the time but with full upfront communication and agreement. Panel changes due to global demand and delivery issues from the original quote were notified upfront and the Longhi panels finally purchased with the order are by no means substandard from the original proposal. The workmen, scaffolders and electricians (Fully MCS qualified) were all very courteous and extremely helpful in explaining the purpose and use of each item of equipment. The support from the Sustain office was pretty much immediately available. Queries from their on-site staff and myself were answered very promptly. All administration paperwork for permissions for National Grid access and MCS certification etc. was all completely handled by Sustain Heating In summary, I would not hesitate to recommend Sustain Heating to anyone considering a solar PV panel installation.
Customer in Bristol City Posted on 08/03/2023 , work completed 24/02/2023
Large Solar PV and Battery Installation - 10k Puredrive Battery & 6k Solis Inverter
Customer Service
Quality
Value
Sustain installed 21 all-black solar panels over my south-west facing roof space along with all required infrastructure - batteries and inverter. I started with 5 quotes and lots of discussions before finally choosing Sustain for my installation. Explanations with regards installation and pricing were crystal clear and once started the installation progressed and concluded as expected. In a project of this nature and the current difficulties in supply chain links it was inevitable that some delays would be encountered. Sustain managed my expectations professionally and reasonably well and in the final analysis the projected completion and commissioning date was achieved. I had very minor issues with communications BUT nothing to warrant any significant comment. All in all, a very easy project to complete largely due to the very good works from all the staff at Sustain particularly the panel installers and the electricians - many thanks - thinking about an ASHP next!
Andrew in Gloucestershire Posted on 16/11/2022 , work completed 07/11/2022
Solar panels and ASHP
Customer Service
Quality
Value
This was a large project, involving solar panels, storage batteries, replacement of all the radiators and installation of an air source heat pump. All phases of the project were carried out very professionally and the various teams carrying out the work were always a pleasure to deal with. Although some phases of the project were quite disruptive, the teams tried to keep disruption to a minimum and worked as quickly/efficiently as possible. All the work has been performed to a high standard. To the extent that there have been any teething troubles, they have been solved promptly and effectively. The company really does want to install a heating system that the customer is happy with and is prepared to go the extra mile to ensure customer satisfaction. Overall, 5 stars!
Customer in Gloucestershire Posted on 04/11/2022 , work completed 31/10/2022
Brilliant
Customer Service
Quality
Value
I can't rave enough about this company. They have done our air source heat pump and we have paid the deposit for solar panels. Every step of the way communication and customer service have been great. Any concerns, issues, etc. They respond right away. Did fantastic work and really just an all around great company. Even moved out install up a few weeks because they knew we didn't have any heat and did the whole thing incredibly quickly.
Customer in Bristol City Posted on 17/10/2022 , work completed 14/10/2022
Solar PV and Batterry Installation
Customer Service
Quality
Value
Sustain installed all black solar panels split between east and west facing elevations plus a three phase FusionSolar home battery system with backup function for power outages or cuts. The installation is really neat. I have had neighbours from my estate that I dont know knock on the door to find out more attracted by the way the panels are installed/look. They also are impressed by the slim profile battery system which is mounted on external wall alongside the meter boxes. The installation was really quick and guys worked really hard. The scaffolding was installed just before installation and taken down a few days later. A very smooth operation. Now we are into september with cloudy skies I am really impressed with how well the system works and I am expecting it to make a big difference to my energy costs and my carbon footprint as I also have an ASHP. I approached other Which trusted traders and they were not as responsive as Sustain and the ones that did respond were not as technically aware as Sustain in their proposals. We are very pleased to get this system in.
Customer in South Gloucestershire Posted on 27/09/2022 , work completed 10/05/2022
Excellent Air Source Heat Pump retrofit
Customer Service
Quality
Value
As a Which member I looked for a Which Trusted Trader for my projects. I contactted five trusted traders and one other large national company. The large national company came to the house to present a quote to us. We laughed after the salesman left - it was far from value for money (caveat emptor). Two trusted traders responded fully to my request for a costed solution. I selected Sustain on technical considerations and overall ease of dealing with them. The team worked really hard as there were some really hot days at the time and a lot of instalaltion work took place in the loft. A major rework of the plumbing was necessary as the existing was far from standard design plus microbore. Install included a water cylinder in the loft, combi boiler plus gas fire removed and gas supply capped. They dug a trench in the garden for the services for the heat pump and even took away the spoil. They installed a Mitsubishi Ecodan system which works really well. It heats the hot water very quickly and playing around with the controls I managed to get the house far too hot one morning in the the recent colder spells (much to the ire of my wife), so the system definitely heats the house. Sustain are very responsive to any querries plus there is a free homeowner support line provided by Mitsubishi which is excellent - no question too stupid! We are very pleased with the end result and I must admit I was very apprehensive initially. The team were very friendly and helpful throughout.
Customer in South Gloucestershire Posted on 27/09/2022 , work completed 05/08/2022
Air Source Heat Pump System installed by Sustain Heating
Customer Service
Quality
Value
Sustain Heating installed an Air Source Heat Pump system for us to provide heating and hot water in our house which is an old stone farm building. They provided us with an excellent service in every way. This included: - A detailed estimate and prompt replies to queries. - A pre-installation visit when all the key issues were agreed, such as locations for all elements of the system, routing of pipework, etc. - The installation itself was done by a team who all knew each other well and worked well as a team. They were all polite, worked hard and kept us informed on the work planned each day. - Detailed decisions were discussed when appropriate before the work was done. - Tools were put away and the house was left tidy and clean at the end of each day's work.
Customer in Wiltshire Posted on 21/07/2022 , work completed 12/07/2022
Go Green confidently
Customer Service
Quality
Value
We had a major solar PV installation completed by Sustain this April. We chose Sustain because they are Which? Trusted Traders and they were helpful and responsive to enquiries. (Another WTT solar firm rejected the house as unsuitable based only on looking on Google Earth!). As we have East and West facing roofs, we accepted Sustain's suggestion of having twin installations and a large battery. Our main motivation was ethical, but we were fortunate that the price difference between selling a London house and buying in North Somerset, enabled us to make the investment painlessly. The planning and execution of the work was excellent and we were kept in touch all the time with progress. The actual installation took about 2,5 days only. In practice now, in these days of maximum light, we use no paid for electricity at all, and a total of less than 1kw since April. In these days of energy crisis, Briish Gas has reduced, not increased our monthly standing order. So we recommend Sustain very highly. They are not perfect and in our case still need to do more to explain to a couple of OAPs how to get the best out of the system and the App, so they score 90%, but we'd certainly have them again and their staff are polite, skilled and helpful.
Customer in North Somerset Posted on 08/06/2022 , work completed 27/04/2022
Reliable and professional
Customer Service
Quality
Value
Work was accomplished to a high standard whilst I was abroad even with covid restrictions and difficulties. They responded immediately on my return with small teething problems. It is now working better than the old gas system and I am extremely pleased with the result. All the stages were well explained and the grant approval system worked well due to the attention to detail they undertook.
Mike in Bristol City Posted on 06/05/2022 , work completed 23/03/2022
Sustain delivered!
Customer Service
Quality
Value
We did lots of homework and spoke to several companies before choosing the supplier to install solar at our home. We chose Sustain due to their knowledge, help and reassurance they provided. They were the company we could trust. And I’m pleased to say that (after a bit of a delay waiting for the products to land in the UK) they delivered. It wasn’t a straightforward install and the weather wasn’t kind, but nothing was ever a problem and they did a brilliant, and very tidy job. I’m pleased to say the panels and battery are performing brilliantly and (now the weather’s improved), we’re reaping the benefits and tapping into renewable energy. Loving it!!
Customer in Wiltshire Posted on 27/04/2022 , work completed 08/04/2022
A reliable, helpful and friendly company
Customer Service
Quality
Value
I first contacted Sustain last October and from the first conversation, I had a great feeling of confidence in their knowledge of my requirements and the reliability of their services. I have not been disappointed. The climate crisis, plus the rocketing cost of gas and now the need to cease using Russian energy have all contributed to my decision to convert from gas central heating to an electrically run heat pump system. Sustain has both provided this efficiently and been a constant source of help and information along the way. Heat pumps are quite expensive and at the beginning of my enquiries, they pulled no punches. I had an upfront breakdown of costs and information about the heat loss survey and energy performance check that would be required as well as much help in sourcing Government funding which over the next 4 years will pay for over half of my new system. As soon as I decided to go ahead I was given a rough date for installation as mid-February, but despite the pressures the heating industry is under, this was brought forward to 24th January. In just over two days my heat pump was installed with all the new radiators and was up and running most efficiently. Since then Sustain has also installed a storage battery which is charged on a cheaper nighttime tariff and also makes much more use of power from the solar panels I’ve had for a few years. All in all, I cannot recommend Sustain more highly, for all the help and information I had before I decided on
Andrew in Bristol Posted on 31/03/2022 , work completed 30/03/2022
An excellent company!
Customer Service
Quality
Value
We had been thinking about having an air source heat pump installed for some time and once we had seen one in action at a friends’ house, we decided to get on with it. Going by reviews of local, specialist companies, Sustain Heating and Renewables really stood out and we weren’t disappointed – excellent service from start to finish, with home visits to explain what would be involved, through to the installation itself. Sustain also arranges all the necessary checks and documents, making the whole process simple and straightforward. Our installers did a great job, explaining what would be happening on a day to day basis; doing their best to inconvenience us as little as possible (we were never without hot water or heating when we needed them); keeping our house in a tidy state while they worked; and listening to our specific requirements, making small changes when requested. We live in a typical early C20 terraced house but our initial doubts about where the heat pump would be sited and how the new system would link to existing pipework were all dealt with in a most professional and reassuring way. We love our new system – responsive, simple to use, providing us with a warm house, masses of hot water and satisfaction of knowing we are using less energy. If you are considering switching to sustainable heating, we strongly recommend that you consider using Sustain. If our experience is anything to go by, you won't be disappointed.
Customer in Bristol City Posted on 16/03/2022 , work completed 08/03/2022
Excellent installation of air source heat pump.
Customer Service
Quality
Value
From the very first contact with Sustain, we found them to be extremely professional and knowledgeable. We had many questions and at all stages they were promptly and expertly answered. They provided us with realistic timescales, despite the high level of work currently being undertaken to meet the RHI deadlines. The installers were clearly experts in their field and ensured that disruption was kept to a minimum. We are delighted with how well the system is working and would have no hesitation in recommending this company.
Customer in South Gloucestershire Posted on 28/02/2022 , work completed 15/02/2022
Reliable and competent
Customer Service
Quality
Value
I have had my old dysfunctional heat pump replaced. The whole process was painless. From start to finish I always felt in good hands with people who knew what they were doing, which is so important with heat pumps, as one needs a firm with trained and experienced heating engineers. The communication was working well, Sustain´s plumbers and electricians did a good job, and their engineers Neil and Ashley were superb - picking up everything which needed tweaking and answering all my questions, giving me the confidence to work the system. All the necessary certificates and paperwork was provided and best of all, I know whenever anything goes wrong, I can rely on Sustain to come and fix it!
Customer in Wiltshire Posted on 24/02/2022 , work completed 15/12/2021
Exceptional service from beginning to end
Customer Service
Quality
Value
We are in the process of building a large 3 story extension and were interested in an air source heat pump for the extension only. After discussing this with Sustain we were told it would make more sense to change the existing house’s ancient heating system as well as we would get a better RHI return this way. Doing the calculations, made complete sense in the end when I had all the figures in front of me. The house was still on a one-pipe system so floorboards were all lifted and it was major upheaval. Joe and his team were amazing at working around me (who works from home) and causing a limited disruption even with such a big job. It took 9 days to complete the installation and I must say I can’t be happier with the whole process. I didn’t realise how bad the previous system was until the new one was up and running! Sustain has been super efficient throughout the process and I would definitely recommend them for anyone’s future renewable energy needs.
Customer in Bath and North East Somerset Posted on 07/02/2022 , work completed 15/10/2021
Air Source Heat Pump
Customer Service
Quality
Value
I received excellent customer service through from quotation to installation. The installation was carried out superbly and the system is working very well. The engineers were very friendly and helpful. I would highly recommend Sustain
Customer in Gloucestershire Posted on 17/01/2022 , work completed 10/01/2022
A big decision; solar panels, battery and heat pump
Customer Service
Quality
Value
This review will be a little different to most, but in some respects may be more informative. We chose Sustainable Heating on the basis of the Which Trusted Trader scheme and we are glad that we did. We have given a five star rating but the installation was far from straightforward. The problems were mostly outside the control of the company but they resulted in the start of the work being delayed, with the installation taking longer than expected. The standard of the workmanship was high with the solar panels and battery installed on time taking only 2 days. The 4 week experience with this system has shown it's worth. The heat pump installation needed the replacement of over 90% of the existing central heating. The inevitable disruption and damage was far less than anticipated, the plumbing and pipework is really neat and to a high standard. The fitters communicated very well with both of us and discussed all aspects of the installation with us. During this time we spoke to Richard and Tony and it was very clear that their goal was to deliver a system that we would be pleased with. This they have done. There were some communication issues and difficulties but they were resolved. Heat pumps are not pretty but Neil, the senior engineer, arranged the pipework etc. to minimise its impact. Today, due to the recent warm weather, was the first time the heating came on for real, so to speak, and I feel confident that we've made the right decision.
Customer in Newport Posted on 28/09/2021 , work completed 21/09/2021
High Quality Workmanship
Customer Service
Quality
Value
Sustain installed a Air Source Heat Pump System at our property in May 2021. The work was completed on schedule and in budget despite some unforeseen challenges. From the initial survey before they actually commenced to the final commissioning the standard of work was exemplary. The work was carried out with the least possible disruption for quite a major amount of work and with courtesy and respect. The Mitsubishi equipment installed is of very high quality and is working very efficiently. The support staff at Sustain ensured all the relevant paperwork, surveys, etc... was all in place from the initial order placement to the final commissioning.
Peter in South Gloucestershire Posted on 13/09/2021 , work completed 21/05/2021
Outstanding Throughout
Customer Service
Quality
Value
Having made the decision to change our heating and hot water from LPG, we made contact with Sustain and they quickly arranged a home visit to give us advice on the best way forward. Their rep Trevor gave us great advice and recommended an Air Source Heat Pump as the best way forward. We had already done some research and were thinking along the same lines, so this confirmed what we wanted to have done. A heat loss survey was quickly and thoroughly carried out and Trevor came back to go through the results with us. We committed to the work and the company gave us a date to start work . This date did slip by a few days but we were kept advised of this, and the reasons, by one of the company directors. Our work involved completely replacing all of our old radiators, fitting two new radiators, and the installation of the ashp, and us such we were aware that this would be fairly disruptive especially as we had other work being carried out at the same time. The company’s project manager ran through the details of the work with us and the whole team were superb throughout the process. In particular the ashp engineer was excellent - friendly, helpful, efficient and genuinely a pleasure to have working in our house. He ran through every step of the process and clearly took pride in what he was doing, a true professional. We will be using the company again for our planned solar panel installation next year, and would happily recommend them to anyone considering such work
Steve in Dorset Posted on 20/07/2021 , work completed 07/04/2021
Would Recommend Sustain Heating
Customer Service
Quality
Value
We had an Air Source Heat Pump fitted as our original heating system broke beyond repair. We had the system fitted with the help of the Green Homes Grant. The work was started and completed on time and all of the work was completed tidily and very efficiently. They serviced and connected our solar thermal system to the new tank and we now have lots of hot water. Everyone was very polite and helpful and we are happy to recommend Sustain Heating. We are so glad we found them.
Mr and Mrs Corrick in Somerset Posted on 15/06/2021 , work completed 26/04/2021
LG Air Source Heat Pump & Full Wet System Installation
Customer Service
Quality
Value
We had an LG Therma 9 kw Air Source Heat Pump fitted by Sustain through the Green Home Grant Scheme. It was a really major job as the house we bought did not have any radiators / wet system and the whole house was functioning on 3 x ancient (and inefficient) storage heaters. Our first contact was with Trevor, who came to visit us in our home and talk through our options. To calculate the size of the pump and rads, Sustain arranged a Heat Loss Survey and Trevor came back to talk us through the results of the Survey and get us signed up for our installation. Despite the issues with delays in the Government scheme, Sustain were very patient and stayed with us through every twist of the application process. Tony, Richard and Sandra were responsive and helpful at every turn. Eventually, when we were issued with the voucher, we had a visit from a highly capable head engineer (Mike). The team from Yorkshire (Mike, James, Matty, Dave the Sparky and apprentice Dylan) were exemplary. They were friendly chaps, highly competent and tidy. They couldn't do more for us and even adjusted some pipework by arrangement. James was there through the whole week and we felt totally confident with every aspect of the work in his hands. The whole project was completed on time and on budget. We had all of the controlled waste collected too by James Stickland. From beginning to end, Sustain were excellent and we could not recommend them more.
Monika in Greater London Posted on 10/05/2021 , work completed 30/04/2021
Recommendations and installation of air source heat pump
Customer Service
Quality
Value
Much impressed with the efficacy and speed of the service from the initial query through to the finish of the installation. A retro-fit of an air source heat pump and entire set of radiators isn't the easiest of jobs but it was accomplished swiftly and painlessly by a team that worked together effectively and thoroughly from the beginning to the end.
Amanda in North Somerset Posted on 05/05/2021 , work completed 30/04/2021
Installation of an Air Source Heat Pump
Customer Service
Quality
Value
We have just had an air source heat pump installed by Sustain Heating & Renewables, and are totally satisfied with the work carried out. They are a friendly company who go the extra mile to ensure the customer is satisfied with the installation, and we can say that it was a truly professional job done by very good workmen who were competent, experienced and brilliant. An excellent job done, and we would reccomend the company without hesitation. Overall a fantastic job done.
Customer in South Gloucestershire Posted on 16/04/2021 , work completed 16/04/2021
Going Green with Sustain
Customer Service
Quality
Value
Going green is an expensive process and we have just had our heating and hot water system converted from oil firing to an air source heat pump in our five bedroom home in Berkshire. It was a major job and performed amazingly well by Sustain Heating and Renewables Ltd. Nothing was too mush trouble and the work was completed to budget and on time. The whole team worked brilliantly well together and overcame all the difficulties as they arose. We would be more than happy to talk with potential customers.
Brian in West Berkshire Posted on 15/04/2021 , work completed 13/04/2021
Recommended
Customer Service
Quality
Value
Sustain fitted our ASHP and renewed all of our radiators. Plenty of support all the way. Very pleased with this company.
Which? Trusted Traders Consumer Posted on 11/03/2021 , work completed 23/09/2019
Endorsement Reference - An honest opinion
Customer Service
Quality
Value
We had a complete new air source heat pump central heating system supplied and fitted.
Which? Trusted Traders Consumer Posted on 04/03/2021 , work completed 31/10/2020
Endorsement Reference - Battery Storage for Solar Panels
Customer Service
Quality
Value
Installation of battery to an existing solar panel array
Which? Trusted Traders Consumer Posted on 04/03/2021 , work completed 19/01/2021
Efficient service
Customer Service
Quality
Value
Installation of air source heat pump, removal of old oil fired boiler, changing many radiators for bigger ones and installation of 2 new ones, moving hot water tank and reconfiguring system to work better, refit solar thermal with improved pump and software
Which? Trusted Traders Consumer Posted on 04/03/2021 , work completed 14/01/2021
Endorsement Reference - Sustain Heating & Renewables - thoroughly recommended!
Customer Service
Quality
Value
Sustain Heating & Renewables installed our air source heat pump and thermal solar water heating during January 2021. They were one of a number of local firms that we considered and came across as professional, competent and rigorous in their approach to service delivery and customer satisfaction. I am delighted with the system that they installed, and would have no hesitation in recommending them to future customers.
Which? Trusted Traders Consumer Posted on 04/03/2021 , work completed 19/01/2021
Endorsement Reference - Excellent work
Customer Service
Quality
Value
Sustain Heating and Renewables quoted for an air sourced heat pump installation in our 4 bedroomed house to replace an aged oil fired wet central heating system. The company provided a competitive quote, not the cheapest and not the most expensive. Included in the quote were 6 replacement radiators, needed to work with the lower water temperature which air sourced heat pumps produce, After the heat loss surveys were complete we added, by mutual agreement, 2 further radiators and a shower pump. The initial contact, surveys and final quotation were all carried out in a professional and satisfactory manner, giving confidence in the company. Work started on the day promised and was completed within the 5 days promised with minimal disruption. Fan heaters were supplied to keep the house warm during the work. The plumbing and electrics were completed to a high standard and the workplace was kept clean and tidy. The system has worked well keeping the house at a comfortable temperature even during very cold weather. A fault developed in the LG heat pump last autumn and the company immediately sent an engineer to identify the problem. A PCB had failed and a new and improved one was sourced from LG under the warrantee and fitted within 48 hours. Overall the heat pump has proved very satisfactory and reduced the heating bills about as predicted, even though we run the house at 22 deg C rather than 20-21 deg.
Which? Trusted Traders Consumer Posted on 04/03/2021 , work completed 16/01/2020
Endorsement Reference - recommending an air-source heat pump
Customer Service
Quality
Value
I found Sustain on the Green Match website. They visited my house and gave a very thorough assessment and quote. I was given a 'scope' document which outlined accurately what the job entailed. I was given the dates that the work would be done. The new parts for the air-source heat pump arrived exactly on time and the work started and finished on the dates agree on. After the work was completed I was given a detailed tour of how it all worked. They had a problem getting the right pipe cladding because of the lock down, but once they had it they came back and replaced the lower quality one for the proper cladding. I was concerned at the noisy water pump and they came back and corrected that. I was then given and electrical installation certificate and a hies energy performance certificate and a NICEIC certificate of compliance. I also got an installation logbook which includes a warranty certificate and an insurance backed guarantee for 10 years. The installation staff were very friendly and efficient. The system has now worked very effectively for 7 months, keeping the house warm throughout the winter months.
Which? Trusted Traders Consumer Posted on 04/03/2021 , work completed 24/07/2020
Endorsement Reference - Great Customer Service
Customer Service
Quality
Value
Removal of 2 existing oil boilers and replacement with an Air Source Heat Pump installation. Including new hot water cylinder, new radiators throughout the property and new pipework to connect the 2 old separate heating systems to the new heat pump. The work was done on time but commissioning was delayed by a leak on the old plumbing system. The leak was fixed promptly, without any additional cost to myself. Since installation there have been a couple of minor issues which were fixed with hesitation and without additional cost. Throughout the work communication has been excellent.
Which? Trusted Traders Consumer Posted on 04/03/2021 , work completed 20/08/2020
Endorsement Reference - Excellent service
Customer Service
Quality
Value
Sustain fitted an air source heat pump for us. They were very knowledgeable and helpful, always available if we had any questions and the work ( which was a huge job as we were replacing storage heaters and had no pipes) was completed super fast, to schedule all with in a week. Planning to use them again due future work.
Which? Trusted Traders Consumer Posted on 04/03/2021 , work completed 20/12/2020
Endorsement Reference - Great Heat pump installer
Customer Service
Quality
Value
Installation of a Valliant Air Source Heat pump at my house. The work was done professionally and systematically and met all expectations. I would have no hesitation in recommending Sustain.
Which? Trusted Traders Consumer Posted on 04/03/2021 , work completed 30/08/2020