Demarco Services Ltd
Underfloor Heating Specialists. Demarco Services Ltd has been vetted and approved by TrustATrader. Covering Ruislip and surrounding areas within a 25 miles
Membership number TT22480
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Register GuaranteeAbout Demarco Services Ltd, Ruislip
Demarco Services Ltd are the small business with the big heart. All your plumbing, heating and building needs in one place.
Demarco Services Ltd is a trusted, professional firm of heating engineers based in Ruislip with over 17 years’ experience in central heating installation, servicing and repair.
When you are looking for a heating specialist it is essential that you find Gas Safe engineers who prioritise safety and high standards. We specialise in all types of central heating systems and plumbing work. All of our engineers hold recognised trade qualifications and are Gas Safe registered.
We are proud of our team of engineers and promote best practice in everything we do. To this end we are members of the following professional body:
Gas Safe
We believe that every customer is entitled to a high-quality, safe service from their heating engineer and we are happy to help with jobs of all sizes. From a minor boiler repair issue to full central heating installation, we are on hand to help you to resolve your heating problems.
With over 17 years in the industry we are able to provide solutions to most gas heating problems including:
- General Plumbing
- Boiler Service
- Boiler Repair
- Boiler Installation
- Boiler Breakdown
- Power Flushing
- Central Heating Maintenance
- Central Heating Upgrade
- Radiator Installation
- Unvented Systems
- Hot Water Cylinders
- Safety Certificates
- Landlord Certificates
If you are looking for reliable Gas Safe engineers in and around Ruislip and within the M25, please get in touch for a no-obligation quote.
Please mention Trustatrader.com Ltd when calling.
Photo gallery
Heating & Boiler Projects
11 photos
Plumbing/Bathroom Projects
15 photos
Work in Progress
18 photos
All other media
1 photo
Demarco Services Ltd
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- Company address verified
- Customer references checked
- Agreed to TrustATrader's high standards
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Insurance details
| Provider | Q Underwriting Insurance |
|---|---|
| Verified | 16th July 2026 |
Associations
Reviews (71)
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Average rating: 5.0 out of 5
Review by Hanne Taylor
on 23rd September 2026
Hanne Taylor - Image 1 "Totally delighted with replacement job of Gas boiler done by Shane Demarco and Lee. All much tidier than before, completed in excellent time and it was obvious they both knew exactly what they were dealing with. Would happily use this firm again."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
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Average rating: 5.0 out of 5
Review by Dudley
on 9th September 2026
"We had a serious water leak under the kitchen floor and I thought we were going to have to break out the floor and take out the kitchen units to fix it . However I called Shane and he sent Lee round immediately to assess the problem. By careful investigation Lee managed to reroute the water pipe without any damage whatsoever to the kitchen - the workmanship, tidiness and dedication was excellent. We also decided to replace the hot water cylinder a couple of days later and again an excellent outcome all round. Such a pleasure to have reliable, trustworthy and honest tradesmen and I cannot speak highly enough of both Shane and Lee - Brilliant!"
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
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Average rating: 5.0 out of 5
Review by Lisa
on 30th July 2026
"Water main pipe replaced and new power shower control fitted to a very high standard. Thank you!"
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
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Average rating: 5.0 out of 5
Review by Susan
on 22nd June 2026
"Wanted an experienced plumber in the Harrow area and contacted Shane Demarco. He was quick to reply and followed up with a text message. He was knowledgeable and confident. An appointment was arranged and I explained the problem with the toilet cistern/flush. He reassured me the problem could be fixed on our older toilet. An appointment was booked for a week later. Lee, his colleague arrived and he was polite, professional and informative and completed the job. Thank you Shane and Lee. I would be happy to contact you again. Highly recommended."
- Initial impression Initial impression: 5 out of 5.0
- Punctuality Punctuality: 5 out of 5.0
- Cleanliness Cleanliness: 5 out of 5.0
- Quality Quality: 5 out of 5.0
- Value Value: 5 out of 5.0
- Overall opinion Overall opinion: 5 out of 5.0
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