Endorsed by Which?

Alan Mack Plumbing & Heating Services

4.9

113 Reviews

Opening Hours
Today -
  • Monday 07:00–20:00
  • Tuesday 07:00–20:00
  • Wednesday 07:00–20:00
  • Thursday 07:00–20:00
  • Friday 07:00–20:00
  • Saturday 07:00–20:00
  • Sunday - Closed

Organisations and Awards

Aug 2020
Aug 2019

About

At Alan Mack Plumbing and Heating, we deliver exceptional service backed by nearly 30 years of experience. As a family-run business, we take pride in offering a range of options and price points for every job, big or small.

We specialize in recommending the most cost-effective heating systems for your property, whether it’s a combi, system, or conventional boiler. Our goal is to ensure your heating system operates efficiently, reducing fuel consumption and lowering your bills.

We stay current with the latest products and highly recommend Worcester Bosch, Viessmann, and Vaillant boilers. As approved installers, we provide extended warranties of up to 12 years.

Our services include:
- Boiler replacement, service, and repair
- Cylinder installation
- Heating controls (Hive, Nest)
- Magnetic power flushing
- Radiator installation
- Booster pumps
- General plumbing and gas work
- Landlord certificates
Please don’t hesitate to call us for inquiries or to schedule a service.

Thank you, Alan Mack

What we do

  • Heating contractors

    • Central heating systems (installation and servicing)
  • Plumbers

    • Unvented cylinder installation and maintenance
    • Water softener installation and maintenance
  • Boiler, central heating and gas engineers

    • Boiler installation
    • Boiler repair
    • Boiler servicing
    • Radiators and central heating
    • Power flushing
    • Gas fire repair and servicing
    • Immersion Heaters
    • Underfloor heating
    • Gas cooker installation

Customer reviews

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4.9
113 reviews
Customer Service
5.0
Quality
5.0
Value
4.8
Sort by
Excellent work, service and value
Customer Service
Quality
Value
When I made contact with Alan (after finding him on Which?) about providing and installing a replacement boiler, he was quick to arrange a visit. He talked through the work thoroughly, explaining options and potential issues. He then immediately provided a clear summary and estimate of the proposed work. Once we had selected Alan, he reconfirmed the quote and booked a date a few days later. Alan and his colleague arrived as arranged and worked through the day completing the work as agreed. They stopped only to discuss options and issues, undertaking some additional work at Alan's own cost after some complications arose. After a long day (9.30 am-7.30 pm) Alan took us through the installation in detail; tidied up and removed the rubbish, leaving us with a working and professional-looking boiler installation. It can be disruptive having people working in the house but Alan and his colleague were both highly personable and professional and made the experience as easy as possible.
Customer in Greater London Posted on 16/06/2021 , work completed 15/06/2021
Helpful, Polite and Very Efficient
Customer Service
Quality
Value
I have used his services before and was very happy to request them once again. He provided me with a boiler service and landlord gas safety check for a good price. He was efficient and knowledgeable but also polite and got the job done whilst providing me with some expert advice. I will definitely use him again.
Jo in Greater London Posted on 30/09/2020 , work completed 29/09/2020
Exceptional service
Customer Service
Quality
Value
I have used Alan before on a boiler repair a while back and needed a complete house heating system put in my new house I bought last year Alan has been working here for for about 7 months. He's installed a new boiler and cylinder underfloor heating and a pumped system to increase my pressure like he suggested he's also installed 3 new bathrooms for me. His services and recommendation has been outstanding. He's gone above and beyond with his service and even helped me with recommend other excellent tradesmen when I was I stuck or let down. It was exhausting this project but working with Alan was a relief and had total confidence when he carried out what he said he would do. To say I'm happy would be an understatement. Will always use his services.
Customer in Greater London Posted on 18/04/2021 , work completed 16/04/2021
Renew Heating and Hot Water System
Customer Service
Quality
Value
As Which subscriber, when our existing 15-year-old boiler gave up and left us with no hot water or heating on 8th Jan 2022 we knew we had to replace the system. This was some of the coldest weather so far this winter. We checked online for approved traders and system manufacturers. We selected Worcester Bosch and chose what appeared to be two models which would suit our requirements. We then contacted Alan and explained our situation. Alan came to see us on Monday midday on10th Jan and looked at our requirements, advising us as to what was required to be done and to replace nine radiators as well as our boiler. He quoted us for replacing the boiler only and for replacing both boiler and radiators. When the chosen boiler could not be readily sourced Alan procured the latest Greenstar 8000 boiler and was able to start work on the Tuesday 18th Jan leaving us with hot water on Tuesday evening and finishing the install on Wed 19th Jan with full heating. At all times Alan was careful not to leave any mess and the pipework on all fittings was extremely neat. Alan gave us an explanation of how the boiler functioned and told us what to look out for regarding bleeding and topping up the system. All has been working well for a week now and we appreciate our newfound comfort. I would have no hesitation in recommending Alan Mack services to friends and neighbours.
Walter in Greater London Posted on 25/01/2022 , work completed 19/01/2022
Tricky pipework transfer from communal tank to mains
Customer Service
Quality
Value
We had a job we'd been putting off for a while. Very old and fragile pipes connected to a communal tank needed to be disconnected and capped off, and new copper pipework needed to be run through from the mains. There were a few risks involved with this one, but there was no one else I would have trusted with it. Alan has serviced our boiler a couple of times and done another excellent plumbing job for us, and was the only person we considered for this job. Alan talked us through all the potential risks and gave us a competitive quote. He arrived on time and got the job done perfectly. An added bonus is that he's approachable, friendly and always takes the time to answer any questions you may have. I can't recommend him highly enough.
Customer in Greater London Posted on 02/08/2022 , work completed 01/08/2022
Boiler emergency
Customer Service
Quality
Value
My ancient boiler broke down during the cold snap just before Christmas. Alan went above and beyond to try and fix it in short term, despite being extremely busy at that time. He did manage to get it going again which tied us over until the new year. He has recently installed a new boiler and at the same time made a number of upgrades to the whole central heating system which were overdue. In my view that is where the benefit comes in - using someone who knows and understands your heating system versus random heating engineers sent by British Gas. Alan explains the technical details well which makes you feel a bit more in control. The work was done with a high degree of professionalism to the agreed schedule and budget and I would be happy to recommend Alan to my friends.
Customer in Greater London Posted on 17/01/2023 , work completed 10/01/2023
Can't fault him
Customer Service
Quality
Value
Alan replaced my boiler, pipes and radiators. Happy with the work carried out, can't fault the work at all. I would 100% recommend him, he was competitively priced.
Which? Trusted Traders Consumer Posted on 11/04/2017 , work completed 11/04/2017
Excellent work
Customer Service
Quality
Value
Alan is pleasant and easy to get on with. He explained clearly what he was going to do and kept us up to date with what was happening. He successfully sorted out some very tricky problems which other plumbers had failed to do. We recommend him and because his work was so good have already arranged his return in 2 weeks to do a few more plumbing jobs.
Jim Posted on 12/06/2019 , work completed 06/06/2019
Impeccable,quality workmanship and all round service
Customer Service
Quality
Value
Alan arrived promptly at the time arranged. He serviced the boiler and dealt with a pressure loss issue. He is a very polite and engaging gentleman who is happy to explain how your heating system functions and the mechanics of any problems. He left everything spotlessly clean. I would highly recommend him as he is punctual, professional, polite and competitive on price. I won’t hesitate to use his services again.
Olly, Ealing Posted on 20/08/2019 , work completed 02/08/2019
Down to earth, good quality service.
Customer Service
Quality
Value
I contacted Alan Mack to enquire about a boiler service after finding their details on Which. They provided me with the best quote and so I booked their services. I received a first class service including a free lesson on how to reset the pressure on my boiler! He also got two of my radiators working again. Polite and friendly service, but the best thing was; I paid a good rate and I know more about my boiler than ever before! I will definitely be using their services again.
Customer in Greater London Posted on 08/01/2020 , work completed 08/01/2020
Underfloor heating sorted
Customer Service
Quality
Value
We had a longstanding underfloor heating issue, which we needed to be investigated and resolved. Based on the reviews, and closeness to our house, Alan seemed to be a good fit. He was easy to reach, and when he came out to the house, he was able to investigate, diagnose and resolve the problem in a very short time frame. He also explained what the issue was, without resorting to jargon and confusing language. Once we had agreed a price, he fixed the issue and also provided some advice on things to watch out for in terms of the heating system generally. Clean and tidy too - would definitely recommend.
Customer in Greater London Posted on 14/01/2020 , work completed 10/01/2020
New Boiler & Megaflow Install
Customer Service
Quality
Value
Alan was a very knowledgeable Heating engineer, he wasn’t the cheapest, but as they say, you get what you pay for. From the start to finish I have no complaints, when he visited my house 1st time, we set and I went through my requirements and problems, and he gave me a quote with recommendations, he spent well over discussing my requirements. When i was ready, I called him again, and he spent good amount of time explaining everything in details. While installing the boiler, he came across poor wiring and he sorted that out for me without additional charges, it did take him good few hours to sort the wiring. He also sorted out my old piping in the roof which looked like cobweb, but he sorted that out too, his piping skills are to be admired. Throughout the install he asked if I was happy with the progress of the job, also each day he would clear up all the mess before leaving for the day. Overall he is a excellent central heating engineer, and it was a pleasure picking the right person for the job, I would recommend Alan to anyone.
Customer in Greater London Posted on 17/10/2024 , work completed 18/09/2024
The trader replied (on 18/10/2024)
Thank you for your review It was a pleasure Alan Mack
The trader replied (on 18/10/2024)
Thank you for your review It was a pleasure Alan Mack
Excellent service!
Customer Service
Quality
Value
Boiler serviced, whole heating installation checked and ok’ed for the season. Alan is amazing; attention to detail, patience and honesty. Kindly explained all the details making sure we understand the nuances of the installation. Softly spoken gentleman, trustworthy and reliable. I recommend!
Customer in Greater London Posted on 09/09/2025 , work completed 05/09/2025
Heating System Upgrade
Customer Service
Quality
Value
Alan was recommended to us. The task was to upgrade our heating system by adding a new pump to increase pressure and a new boiler. Together with 3 new radiators and fitting new valves and brackets to existing vintage radiators. From the initial conversation you got a good feeling that this was a really professional service. The initial call and quote was very thorough. The work itself was performed on time and too budget with due consideration to additional costs, agreed in advance and with recommendations. Post completion we received a detailed set of short videos and a final debrief call for questions. Exceptional work and service overall.
Customer in Greater London Posted on 12/06/2025 , work completed 10/06/2025
Brilliant
Customer Service
Quality
Value
We had a small leak in our old boiler so we called Alan and he came to visit within 2 hours. He identified the problem and because our boiler was over 20 years old he advised we change it. After ordering the new boiler he took the old one out and cleaned everything out. Very happy and we have already recommended him to other people who have also now had work done by him.
Which? Trusted Traders Consumer Posted on 14/07/2017 , work completed 14/07/2017
My Review
Customer Service
Quality
Value
Alan re-plumbed my whole house for me. He is extremely helpful, polite, tidy and his work is excellent! The pipework is fantastic and was very neatly done. The work was exactly as we discussed and to budget. He is reliable, flexible and I would definitely recommend him to anyone.
Which? Trusted Traders Consumer Posted on 27/07/2017 , work completed 27/07/2017
Installed New Boiler
Customer Service
Quality
Value
I used Alan Mack to install a new Worcester Bosch Boiler. He was very professional and tidy and finished the work in one day. I would definitely use him again.
Customer in Greater London Posted on 20/03/2019 , work completed 18/03/2019
Very friendly chap
Customer Service
Quality
Value
Alan is punctual and reliable. His work is at the highest standard. I will not hesitate to call him again.
Customer in Greater London Posted on 21/03/2019 , work completed 21/03/2019
Very efficient
Customer Service
Quality
Value
Alan came to fit a wireless thermostat, service the boiler and balance the radiators. He was very friendly, helpful and knowledgeable and completed all the work efficiently and quickly while also checking over the whole system. He also helped us to understand the whole heating system and maintenance requirements better than we previously did. Very satisfied and will use him for some more work in the near future.
Customer in Greater London Posted on 09/05/2019 , work completed 08/05/2019
Reliable and knowledgeable service
Customer Service
Quality
Value
Alan was very professional in carrying out a boiler service. He was immediately able to identify what may have been causing noises in our flue outlet, and advised us on how best to get it fixed. Also, Alan was very communicative and let us know at what time he would be coming, so we didn't have to wait in all day. Highly recommend his services.
Customer in Greater London Posted on 10/08/2019 , work completed 10/08/2019
My review
Customer Service
Quality
Value
Excellent work, efficiently done.
Alan, London Posted on 06/09/2019 , work completed 06/09/2019
Servicing the boiler
Customer Service
Quality
Value
Alan has purchased and installed our boiler after visiting us to assess the problems with the old one and advised us about the type of boiler we need and the costs. We employed him to do that after getting 3 different quotes from different individuals. He was very helpful, did the job on time and tidied after he finished. Checked everything was working smoothly. This was 2 years ago. Now he serviced it for the second year and adjusted the pressure. He checked that everything is working fine. He is efficient, engaging and does his job in a very professional way.
Customer in Greater London Posted on 05/09/2019 , work completed 05/09/2019
Great job replacing our boiler!
Customer Service
Quality
Value
Very pleased, Alan did a great job replacing our boiler! He worked quickly and efficiently and was good value too. We would definitely recommend him to others.
Customer in Greater London Posted on 21/11/2019 , work completed 16/10/2019
Great Work! New Boiler
Customer Service
Quality
Value
We contacted Alan to install a new boiler following a recommendation from our neighbour. Alan is very professional, polite, efficient and knowledgeable. We are very happy with his work and have no hesitation in recommending him.
R Rafati Posted on 25/10/2017 , work completed 25/10/2017
Brilliant Job
Customer Service
Quality
Value
Alan answered the phone promptly and was very professional. He agreed to come and do the works at short notice and was on time. He carried out the work quickly and efficiently, explaining what he was doing as he went along. I would certainly recommend Alan Mack's services to others.
Paul, London Posted on 29/11/2018 , work completed 29/11/2018