“I have known Lee since his time as apprentice. Over the years he has maintained and serviced by gas boiler. He is polite, friendly and punctual. His work is excellent and leaves the site clean. I would thoroughly recommend him.”
Public evidence profile · Checked June 2026
Lee Marshall Heating Limited
Credentials & registries
TrustATrader Approved
No Trust Score yet
- Rated 5.0 from 119 reviews
- 1 credential shown
Newest review April 2025
Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.
Reviews · public evidence
What customers say
These reviews are published independently on the named public source below, not testimonials this business chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.
5.0out of 5
Customers often mention
Where these reviews are published
- TrustATrader119 reviews · 5.0 avg
Highlights
“Highly recommend Lee, he is so hardworking, punctual and thorough. Lee had originally refitted us a new boiler and has also repaired our pipe work in the bathroom after it was fitted incorrectly by a previous ‘plumber’. Lee goes above and beyond and takes pride in his hard work - would highly recommend to everyone!”
“Boiler service. Friendly guy and professional. Would recommend!”
Detailed reviews
These are the individual reviews we hold for Lee Marshall Heating Limited, including the highlights above. The 119 headline total is the review volume reported across public review sources.
Lee's work is exemplary I would highly recommend him.
Absolute genuine and grateful for his service. If you want value for money, trustworthy person, always happy to help, then Lee is your man. Thank you for giving me the best service and piece of mind as well. Neal
Lee and Max replaced our very very old boiler with a Worcester Bosch Ri, new cylinder in the airing cupboard, a new heating control package and TRVs on the radiators. Probably not the most straight forward of jobs as boiler needed repositioning, however, they completed the work with ease and always willing to answer any questions. Lee and Max are very knowledgeable and we found their work well planned and neat pipework with attention to detail. Very pleased with the work they did and will have them for servicing next year. Lee and Max have our full recommendation.
We called Lee of Marshall Heating when our old boiler packed up. Lee and his apprentice Max arrived on time. They were professional from start to finish, showing outstanding workmanship. Everything about the boiler installation, safety and new thermostat was explained clearly. They cleaned up thoroughly before leaving too. Highly recommend them. We will definitely call them back in when our service is due.
The engineer was punctual, polite and very professional. He explained everything to me about the gas service and what needed doing. Also left the area tidied and clean. I would recommend him to anyone without hesitation
Read the other 10 detailed reviews on this pageShow fewer reviews
Lee and Max always maintain our boiler and general plumbing work, we are always highly delighted with their work. Today Max fitted a new Bristan tap in our kitchen and again a superb job completed. David
Lee is always professional and courteous. He is always on time and all work is done to the highest standard. He installed my system and has maintained it ever since. First class service every time.
Fantastic, reliable and trustworthy. Often recommend and wouldn't consider anyone else.
I've called on Lee twice recently for different jobs. Both times he has responded really quickly and come out to complete the requests within a very short time frame. I cannot recommend this company highly enough. Polite friendly and very knowledgeable. Will lost definitely use them again.
Found Lee through TrustATrader. Arrived on time with his apprentice Max. I had requested a boiler service and had an issue with a diverter valve. Lee checked the valve, showed and explained to me the problem. There was a few issues with the boiler which Lee took in his stride. The work undertaken was completed with ease. Both Lee and Max were very professional, friendly, polite and very tidy. This company is now in my phone and I would recommend and use again. Many thanks.
Fantastic service, advised on eta of arrival for work, friendly approachable service. We used Marshal heating to service our boiler and to install a hive system. The work carried out was to a high level, they explained everything that they were going to do. They installed my hive system to my boiler. I will definitely be getting in contact in a years time to service my boiler again. They were also very value for money.
Lee and his apprentice arrived promptly on the arranged day. They were polite and friendly throughout. Lee had successfully diagnosed the problem previously with my boiler over the telephone and had ordered a part. Once they arrived, they set to fixing the boiler. Lee also proactively noticed that my Maxiflo cylinder needed the air replenishing and he was also was able to fit replacement vent plugs on a couple of radiators that were leaking whilst they were both here. He explained everything as he was going along too. I can recommend him 100% and will be setting up a service contract with him in the future too.
Fantastic service
Lee is a first class Heating Engineer. Always on time, very professional, knowledgeable and honest. Extremely neat and tidy and a very nice person to do business with. I have no hesitation recommending him to family and friends. Patrick
I found Lee Marshall very competent,knowledgeable and helpful throughout the the work.They worked Late if necessary not like a lot of tradesmen I have used leaving at 3pm nearly every day. I am a retired Architect and would Definitely recommend this company.
Local context
Rated 5.0, in line with the local average for plumbers in Dunstable
Across 30 plumbers in Dunstable, the typical rating is 5.0 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
From customer reviews
What customers consistently say
Recurring themes from 114 customer reviews on TrustATrader. Analysis updated 10 Aug 2026.
Customers who keep coming back: “We always use Marshall Heating for all of our plumbing and heating requirements, this is a very good company so give them a call.” · TrustATrader, 2 Feb 2021
Respectful and tidy in your home: “Arrived promtly, all work carried out thoroughly and to the usual very high standard, all left clean and tidy.” · TrustATrader, 2 Aug 2021
“He is alway punctual and very reliable.” · TrustATrader, 4 Nov 2024
“He is always on time and all work is done to the highest standard.” · TrustATrader, 14 Nov 2022
“Always on time, very professional, knowledgeable and honest.” · TrustATrader, 15 Nov 2021
“Both times he has responded really quickly and come out to complete the requests within a very short time frame.” · TrustATrader, 17 Mar 2022
“Lee came to the house the same morning as I called, he had a part, and the job was completed within an hour.” · TrustATrader, 20 Nov 2018
“He came in the afternoon, went out to get a new pump and it was repaired by the end of the day.” · TrustATrader, 17 Jul 2017
“Everything about the boiler installation, safety and new thermostat was explained clearly.” · TrustATrader, 8 Feb 2023
“He explained everything as he was going along too.” · TrustATrader, 9 Feb 2022
“Lee has an excellent understanding of all heating issues and is able to explain the problems in a clear and easily undertsandable way.” · TrustATrader, 3 Apr 2019
“Lee and Max are very knowledgeable and we found their work well planned and neat pipework with attention to detail.” · TrustATrader, 13 Feb 2023
“First class workmanship and brilliant customer service.” · TrustATrader, 18 Nov 2020
“Professional, polite and the quality of workmanship is outstanding.” · TrustATrader, 16 Dec 2019
Credentials and checks
Credentials, licences and vetting
Credentials and associations
1Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
- Source checked
- 26 Jun 2026
From TrustATrader
TrustATrader checks
No missed appointments in the past 6 months. TrustATrader logs when a member misses an agreed appointment, so a clean run is a sign they turn up when they say they will.
TrustATrader lists these checks:
- Identification checked
- Company address verified
- Customer references checked
- Agreed to TrustATrader's high standards
- Agreed to complaints procedure
Insurance listed on TrustATrader:
- Source-listed cover: Commercial Express; verified 12 Nov 2025
This information comes from their TrustATrader profile. Confirm current cover, membership, and job terms directly before hiring.
Public directory notes
1Checks and details listed by directories
These are checks, verified insurance filings, and practical details listed by named public directories and official registers. Each is the named source's own record, not MyTrustedTraders verification, unless a separate panel shows that evidence.
12-year member
Check the listed source (opens in new tab)Sources
2 named public sourcesWhere this information comes from
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Review sources
Business and public registers
Public evidence last checked June 2026
About
Lee Marshall Heating Limited has been vetted and approved by TrustATrader. Covering Herts, Beds and Bucks.
What this business says about itself
From their own website
What this business says about itself
See their work: Photo gallery (opens in new tab)
- Experience they state: Many years of experience
- Areas served: Herts, Beds, Bucks
- Good to know: Free quotes
Accreditations it displays. Confirm each is current on the official register before you hire:
- Gas Safe Register · verify (opens in new tab)
These are statements the business makes on its own website, worth confirming in writing (and on the official registers) before you hire, not independently verified by us.
Independent checks
About this business
How long they've really been tradingOperating since at least 2013 (13 years), according to an independent source, not just their own word.
First public review2013Website online since2014
Your own checks
What to check before you hire
Worth checking yourself
Always confirm credentials and quotes with the business directly before hiring.
Verify at the sourceCheck them yourself
Approved plumbers on the free WaterSafe register are vetted, qualified to the water regulations and insured. Check they're listed, or find a WaterSafe-approved plumber near you.
Check the WaterSafe registerAgree the call-out fee, the hourly or fixed rate, and whether parts are charged on top, in writing, before an emergency plumber starts. Out-of-hours overcharging and 'while I'm here' add-ons are common complaints.
Be wary of a plumber who, on a first visit, says your whole system or boiler must be replaced. Get a second opinion and an itemised quote (parts and labour separately) before agreeing to major work.
Gas and boiler work is a separate, regulated trade, not general plumbing. Make sure anyone working on a gas appliance is specifically registered to do gas work, and ask to see that registration before they start.
Want an extra legitimacy check? Run the Cowboy Checker on Lee Marshall Heating Limited before you contact them.
Run Cowboy Checker →Good to know
Common questions about Lee Marshall Heating Limited
Is Lee Marshall Heating Limited a legitimate business?
Lee Marshall Heating Limited has 119 independent public reviews, rated 5 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about Lee Marshall Heating Limited?
Lee Marshall Heating Limited has 119 public reviews, averaging 5 out of 5. You can read the individual reviews and where each came from in the reviews section above.
How do I know Lee Marshall Heating Limited's reviews are genuine?
Lee Marshall Heating Limited's 119 public reviews come from a named public review source, and MyTrustedTraders links every one back to where it was published, so you can open the source and read them yourself rather than trusting a single curated page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.
Does Lee Marshall Heating Limited turn up to appointments?
TrustATrader's logs show no missed appointments for Lee Marshall Heating Limited in the past 6 months. TrustATrader logs whenever a member misses an agreed appointment, so a clean run is a sign they turn up when they say they will. This is TrustATrader's reliability signal over that period, not a guarantee.
Is Lee Marshall Heating Limited qualified and accredited?
We hold 1 independently sourced credential for Lee Marshall Heating Limited, including TrustATrader Approved. Each is attributed to the body that issued it in the credentials section. For example, TrustATrader Approved is TrustATrader's approved badge: awarded after it vets the trader's identity and background.
What areas does Lee Marshall Heating Limited cover?
They state on their own website that they cover Herts, Beds, Bucks. This is the business's own statement on their website, not something we have independently checked. Confirm they cover your postcode before booking.
When was Lee Marshall Heating Limited's website registered?
Lee Marshall Heating Limited's website has been online since 2014, according to the public domain registry. This dates the website, not necessarily when the business began trading.
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