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 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