Endorsed by Which?

Alan Mack Plumbing & Heating Services

4.9

113 Reviews

Opening Hours
Today - 07:00–20:00
  • 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

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
113 reviews
Customer Service
5.0
Quality
5.0
Value
4.8
Sort by
Super helpful
Customer Service
Quality
Value
Alan helped fixing the issue with my boiler kept dropping pressure. He started with diagnosing the issue and ruling out external factors. Then he explained everything in detail followed by useful suggestions. He then applied the fix, now it’s hassle free. I would highly recommend Alan as your gas engineer to go.
Customer in Greater London Posted on 20/11/2025 , work completed 28/10/2025
Installed new Worcester Bosch boiler
Customer Service
Quality
Value
Alan and his assistant Fred installed a new Worcester Bosch boiler for us. Alan communicated clearly ahead of the job and completed the job to a high standard for a fair price. He flushed the system and installed the new boiler, system filter and Hive mini thermostat. He had to rework some of the pipes and fit a new flue and condensate pipe to the outside of our first floor flat. He also fixed our towel radiator which had been installed incorrectly. He understood our requirements and clearly explained everything in simple terms. Finally he made sure everything was working and that we were happy before he left. Highly recommended.
Customer in Greater London Posted on 06/11/2025 , work completed 03/11/2025
A tricky job
Customer Service
Quality
Value
I booked Alan to carry out a powerflush on our old and neglected central heating we inherited with the house. I knew it was not going to be straightforward and so it proved. Alan was with us almost the entire day fixing one issue after another, but at the end of the day we have heating and hot water. Alan was professional throughout and talked me through the various problems and solutions. Although he was with us much longer than expected the agreed fee remained the same. I would definitely recommend Alan Mac for plumbing and central heating work.
Customer in Greater London Posted on 17/10/2025 , work completed 17/10/2025
My New Go to Plumber
Customer Service
Quality
Value
My central heating had stopped working. I found Alan via Chat GPT, having asked for the names of plumbers with the best reputations in West London. He was the first on the list it generated. He came when he said he would, was very personable and identified and fixed the issue (including having to go to buy the new part required) quickly. He also fixed a couple of radiators that weren't heating as they should without charging any me anything extra for doing so, even though he had to use a new valve on one of them. His good reputation is fully justified and I will now automatically default to using him in future should the need arise.
Customer in Greater London Posted on 25/09/2025 , work completed 25/09/2025
Installation of a new heating system
Customer Service
Quality
Value
Alan, planned, sourced, and communicated, with a third party,as to the installation of a new boiler in my home. All completed in two days, also added a radiator, in my rear extension, which made sense. Knowledgeable,reliable,and helpful in explaining, in layman’s terms, your options. Recommend him, wholeheartedly,to all. You won’t go wrong.
Customer in Greater London Posted on 13/09/2025 , work completed 04/09/2025
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
Great expertise and Great Job
Customer Service
Quality
Value
Thank you, Alan! You provided great service from the initial call to the boiler fitting. All our questions were answered with clarity. Alan has great knowledge of his trade and is a specialist. We are very happy with the installation, the work is very neat and tidy, and everything is running smoothly.
Customer in Greater London Posted on 15/07/2025 , work completed 10/07/2025
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
New Boiler
Customer Service
Quality
Value
What can I say, a tradesman who absolutely knows his job inside out. My old boiler was installed by cowboys and we have had nothing but problems, then comes along Alan. Wow he really knows his stuff I highly recommend this guy,he is patient and explains everything so well. We had so many issues to correct from the old boiler installation and it was not a problem I will say again best tradesman we have ever had Thank you Alan
Customer in Greater London Posted on 24/03/2025 , work completed 24/03/2025
Fantastic Service - Very Happy to Recommend
Customer Service
Quality
Value
Called Alan as we needed our boiler and central heating system serviced and a radiator thermostat replaced. Within a week the work was completed and we now have a boiler working as if it was new and radiators working efficiently, he kindly was even able to provide the replacement radiator thermostat without charge. Throughout Alan’s communication, advice and knowledge has been exceptional and the quote for the work was one of the most reasonable we received.
Customer in Greater London Posted on 05/02/2025 , work completed 03/02/2025
A real find!
Customer Service
Quality
Value
Having been endlessly mucked about by a local plumber who did not have a Drayton Motorised Valve and said it had to be specially ordered in, I found 12 such valves available for collect at various local plumbers' merchants around me! Having waited two days, I called Alan and he came over straight away, fitted the valve and checked the system. I thoroughly recommend this very efficient and helpful man
Customer in Greater London Posted on 27/01/2025 , work completed 27/01/2025
Great work and helpful
Customer Service
Quality
Value
Alan installed my new boiler, water filter, and faucet. He provided valuable advice on the best parts for my needs, demonstrating his expertise and attention to detail. He completed the work to an exceptional standard and displayed extensive knowledge throughout. I highly recommend his services to anyone in need.
Customer in Greater London Posted on 04/12/2024 , work completed 15/11/2024
Job well done
My old boiler needed replacing, so I got a few quotes to get a sense of the cost and work involved. I chose Alan because when he visited to give an estimate, he struck me as an affable, knowledgeable professional. Also, I appreciated him giving a detailed explanation & costings of what the job entailed. Alan patiently and politely answered any questions I had and later sent me a detailed written estimate of all that had been discussed. On the agreed starting date for installing the boiler, Alan arrived on time, worked very hard throughout the day and tidied up when he was finished. Despite it being a long day’s work, Alan took time to double-check the boiler and radiators, making sure everything was in good working order before he left. I am pleased with his work and would be happy to recommend him.
Customer in Greater London Posted on 13/11/2024 (Reviewer did not use service)
Professional and patient
Alan went above and beyond in helping me get the correct heating system. After picking Alan from a few other engineers he came on the day that was agreed He installed a new Worcester combi boiler along with 4 new radiators. He recommended a towel rail which I'm very happy with as it uplifts the bathroom. On completion, I was extremely happy with his workmanship and left the property tidy I'm really impressed with Alan putting back a tiled boxing better than originally as other plumbers said they would need to smash it out to get to the pipes I would 100% recommend Alan
Customer in Greater London Posted on 08/11/2024 (Reviewer did not use service)
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
Job done successfully
Customer Service
Quality
Value
I had a leaking pipe. I got a number of names from Which and he got the highest rating. I chose him and booked an appointment with him for Monday. He came and explained to me the situation and the possible options, wishing to give me the best price for the job. He then did the repairs very successfully. I was very pleased with his work and told him that I would give him 5+ stars if it was possible to do so. Thank you for a job well done Alan.
Customer in Greater London Posted on 15/10/2024 , work completed 07/10/2024
The trader replied (on 18/10/2024)
Hello Thank you for the kind review. The job had some challenges like the wiring but I was determined to get it done to the standard I was happy with. It was a pleasure to work with you. See you for the boiler service next Yr. Thanks, Alan Mack
Exceptional service
Customer Service
Quality
Value
Initially contacted Alan about removing a radiator and replacing it with a vertical one. When he initially visited he inspected the whole heating system and helped me to make an informed decision about replacing the boiler and all the radiators which were old and on borrowed time. I also asked him to fit a new kitchen sink, tap, bathroom vanity unit and shower screen. He helped me decide on a new kitchen sink and tap and supplied a shower screen at a highly discounted price. The work was completed to the highest standard on the agreed dates and for a fair price. Most importantly, Alan is a very genuine, engaging and knowledgeable person who you can trust and feel comfortable being in your home. He went above and beyond to make sure the job was done properly and explained everything clearly. He always kept me updated with what he was doing and dealt with any issues that popped up. I will use Alan for boiler servicing and any other plumbing and heating work required in the future.
Customer in Greater London Posted on 24/08/2024 , work completed 21/08/2024
The trader replied (on 26/09/2024)
Thank you for your business It was a pleasure working for you Alan Mack
Obsolete Broken-down Boiler Replacement
Customer Service
Quality
Value
Suddenly, the boiler just decided not to work any more: no hot water. A friend highly recommended I get in touch with Alan. Alan patiently explains everything in a comprehensive quote. Quotes a fair price. And, he is a kind, empathetically flexible, knowledgeable professional. Boiler breakdown is very stressful, without any additional drama Alan turns it into a pleasant experience.
Customer in Greater London Posted on 08/08/2024 , work completed 06/08/2024
The trader replied (on 26/09/2024)
Thank you for your review I hope your happy with the work See you next year for a service Alan Mack
Plumbing jobs and gas fire service
Customer Service
Quality
Value
Alan replied promptly and courteously to my initial enquiry. After a helpful conversation, in which he indicated how I could make the most economical choices, we agreed a date for the work to be done. Alan installed a new mixer tap in my kitchen - not an easy task as he had to pull out the dishwasher to gain access to the infrastructure of my sink. He also repaired a mystery leak under the sink. An issue with the toilet cistern was solved by replacing the ball valve. He had anticipated this problem and had put a replacement in his van, just in case. Finally, a heating job: my gas fire was not working so Alan gave it all a thorough clean to remove debris that had accumulated. He also advised that I buy a new CO detector and that I have the chimney swept. At every stage of each job, Alan kept me informed of the steps he was taking. And everything was left spotless after he had finished. A good afternoon's work!
Customer in Greater London Posted on 05/08/2024 , work completed 01/08/2024
Replacement Radiators and Boiler Service
Customer Service
Quality
Value
Very happy with the work carried out by Alan and his team. All radiators replaced, boiler services as per original quote. Alan answered all my questions and I would definitely use him again.
Customer in Greater London Posted on 21/02/2024 , work completed 21/02/2024
Prompt and fast
Customer Service
Quality
Value
Prompt & fast service Completed gas boiler ‘ heater check Gave peace of mind. Pleased to have found this team.
Customer in Greater London Posted on 14/12/2023 , work completed 14/12/2023
New Boiler
Customer Service
Quality
Value
Alan installed a replacement Worcester Bosch boiler for me on November 6th, with replacement radiator valves, a replacement towel rail and a replacement thermostat. He left me with details of what aftercare might be required and how to program the thermostat. I have had the new system now for two weeks and I'm delighted to say it is all working perfectly. The operation was performed efficiently and with minimum mess. I have no reservations about recommending Alan Mack plumbing and heating services. (The Honeywell leaflet instructions could be better. Fortunately there is an excellent YouTube video.......)
Customer in Greater London Posted on 18/11/2023 , work completed 06/11/2023
Landlord certificate
Customer Service
Quality
Value
Great service , timing and friendly personality. Repaired leak in the system with discounted fare which was highly appreciated.
Customer in Greater London Posted on 24/08/2023 , work completed 23/08/2023
Boiler Service
Thorough service, explained the process clearly giving advice of future work required. Would recommend.
Customer in Greater London Posted on 22/08/2023 (Reviewer did not use service)
Knowledgeable and Excellent Service
Customer Service
Quality
Value
Alan installed what was for us, a totally new boiler system as well as seven new radiators a year ago. He returned today for the first annual inspection and check. We have been very impressed with his knowledge and appreciated his lucid explanations especially as we changed over to a completely different central heating system. The installation was carried out with minimal fuss, mess and disruption and included installing some new pipework, taking out the old boiler and both the hot water and cold water tanks. We were delighted to see him back today for the annual check. We recommend him most highly.
Customer in Greater London Posted on 06/06/2023 , work completed 22/06/2022