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Review summary

Based on reviews, created with AI

Reviewers overwhelmingly had a great experience with this company. Customers consistently praise the company's professionalism, reliability, and excellent service. Many highlight the efficient communication, promptness, and the ability to accommodate urgent requests. Consumers appreciate the team's knowledge, politeness, and the clarity in explaining procedures and options. People also value the helpfulness and efficiency of the administrative staff, who ensure smooth scheduling and address queries promptly. Several reviewers specifically mention the engineers' thoroughness, tidiness, and dedication to completing work to a high standard. Consumers are confident in recommending the company for boiler services, installations, and repairs, citing fair pricing and a customer-focused approach.

Based on these reviews

Rated 5 out of 5 stars

First class boiler service from Conner(and apprentice)once again.GIven afternoon time and received text with arrival time on the day. Answered a couple of questions in a clear and friendly manner.... See more

Rated 5 out of 5 stars
Verified

Had the boiler serviced. Engineer arrived as arranged. Carried out the work in a very professional manner keeping me fully updated on the work carried out. Very friendly and helpful staff.

Rated 5 out of 5 stars
Verified

C1 Boilers is my go-to destination whenever I need help. Conor is extremely knowledgeable and explains everything very clearly and helpfully. Always polite and on time. Teresa is really great at... See more

Rated 5 out of 5 stars
Verified

I trusted the staff. The whole process was reassuring and I feel like I made a good decision. It was helpful that I don't have to pay outright and that finance was easy to arrange. No mess, no inconve... See more

Rated 5 out of 5 stars
Verified

Connor has been servicing our boiler for 4 years now and gets in touch to remind us of dates etc so we have less to worry about. He is knowledgeable, friendly, tidies up after him and goes the extra m... See more

Rated 5 out of 5 stars
Verified

C1 Boilers Gas & Heating Services are brilliant. We recently got a new boiler fitted by them, and it was a smooth process. Teresa (who handles the administration, phones etc.) provides the best... See more

Rated 5 out of 5 stars
Verified

Connor and his colleagues were prompt, polite, friendly, efficient, patient, clearly knew what they were doing and did it well. They were good at listening and explaining. They kept to time, indeed s... See more

Rated 5 out of 5 stars
Verified

Fantastic experience with Connor and Theresa from C1 Boilers. I reached out when our old boiler failed and gas was shut off as a result, in the middle of winter. Connor visited the same day at 630pm t... See more

Rated 5 out of 5 stars
Verified

Once again excellent service given by Connor. Came out at short notice, two days before Christmas & had my boiler going again in no time. Connor is always very polite, explains what's happening & is a... See more

Rated 5 out of 5 stars
Verified

Their office manager Theresa is very helpful and efficient. Everything was simple and arranged quickly. The fitter was very polite and knowledgeable. The only downside would be that if you're usin... See more

Rated 4 out of 5 stars
Verified

C1 were really great when we had to unexpectedly replace the old boiler in our new house, having just bought it. They sent out an engineer within 24 hours of me contacting them, and Teresa in the offi... See more

Rated 5 out of 5 stars

C1 are fantastic! Replaced my old boiler with a new one in less than 5 days after my first contact with them! Connor explained everything & went through different boiler options with me. Teresa in... See more

Rated 5 out of 5 stars
Verified

Excellent service. Professional, efficient, friendly and very thorough. Called C1 and they gave me an appointment slot immediately (unlike British Gas!) and prices are very reasonable. Very confi... See more

Rated 5 out of 5 stars
Verified

The company arranged a date that was suitable for me, they arrived on time and done a fantastic job. No mess was left when the job of replacing all the radiator valves and fitting an extra radiator. C... See more

Rated 4 out of 5 stars

C1 Gas & Heating Services Ltd did a great job when they fitted a new combi boiler in my property recently. They were professional and prompt, with clear communication and a detailed quote. The enginee... See more

Rated 5 out of 5 stars
Verified

From start to finish an amazing company to deal with. We had an emergency and required to replace our old boiler. One email to arrange a visit and discuss our options, fitted a couple of days later... See more

Rated 5 out of 5 stars
Verified

an honest plumber! only a small part needed replaced on a very old boiler. needed to wait for the new part but as soon as it arrived they fixed an appointment. unfortunately the engineer was delayed i... See more

Rated 5 out of 5 stars
Verified

Another 1st rate job from C1 Boliers. Connor fitted a programmable room thermostat will little fuss or mess. Can't commend highly enough and would have no hesitation to use again and recommend.

Rated 5 out of 5 stars
Verified

The company alerted me that the annual servicing of my boiler was due. I phoned to arrange a suitable time. I was informed of the time and informed when they would arrive. The heating engineer togethe... See more

Rated 5 out of 5 stars
Verified

I'm VERY happy to recommend Connor and the C1 Team who recently replaced a boiler for me. Communication was excellent from the start and they were happy to answer questions re pro's and con's and guar... See more

Rated 5 out of 5 stars
Verified

We booked C1 Boilers to come out and service the boiler in my late father's house before the sale went through. They were very efficient and kept us informed throughout. The guy that did the servic... See more

Rated 5 out of 5 stars
Verified

My Boiler decided to fail and C1 came to the rescue. They came out the following morning to assess the issue i was having and Connor was my engineer, who was absolutely fantastic and very professiona... See more

Rated 5 out of 5 stars
Verified

Great service from C1, they gave me three quotes to choose from for my replacement boiler, I chose the top quote and I'm completely happy with my choice, Ideal ultra 32kw. The C1 team offer great pers... See more

Rated 5 out of 5 stars
Verified

Engineer did good job servicing boiler, also advised on needed parts and smoke alarm

Rated 5 out of 5 stars
Verified

Great experience with C1 Gas & Heating today, could not fault the work by the engineer or the office manager, very well done. Will use again for sure all in all excellent.

Rated 5 out of 5 stars
Verified

C1 fitted my new boiler two years ago. Connor is excellent and delightful too. I have no hesitation in recommending the company.

Rated 5 out of 5 stars
Verified

Great service from C1 Boilers on a short notice. Connor and the team have replaced our old boiler quickly and professionally with minimal disruption.

Rated 5 out of 5 stars
Verified

Very professional, reliable company. We personally had to have some last minute work carried out which they were able to accommodate at very short notice. Heating engineer attended and carried out h... See more

Rated 5 out of 5 stars
Verified

ON time courteous no mess clean job explained in detail will recommend to anyone I have used them before as well they did a good job

Rated 5 out of 5 stars
Verified

Where do I start... From the start to finish, they have been all amazing. Our boiler broke and C1 has been there, the quote was done the following day and the job 4 days later. Theresa on the phon... See more

Rated 5 out of 5 stars
Verified

Didn’t wait long on an appointment. Boiler serviced was carried out efficiently. Questions I had on heaters/new boiler answered. Fast and friendly.

Rated 5 out of 5 stars
Verified

C1 gas were absolutely fantastic, I would 100% recommend them to a friend, our very old boiler broke in the weeks before Christmas and Teresa very kindly managed to fit us in and get our old boiler ch... See more

Rated 5 out of 5 stars
Verified

Excellent company. They make sure to do their work well. They’re friendly, they work with diligence and integrity. Would happily recommend them to anyone.

Rated 5 out of 5 stars
Verified

Connor was friendly and efficient when servicing our boiler. He saw a small problem which he fixed. I would recommend his company.

Company replied

Rated 4 out of 5 stars
Verified

Good company, great communication as recently were very busy and had to re schedule twice! But kept informed and were prompt and friendly!

Company replied

Rated 5 out of 5 stars

C1 Gas and Heating recently serviced my central heating boiler, carried out repairs and fitted a new controller on three separate occasions. On each occasion the engineer was prompt, friendly and carr... See more

Rated 5 out of 5 stars
Verified

From the minute I phoned the service was speedy and efficient. The only company who took notice of the emergency we were in and fitted us in. Also no pushing extra products or services . Thank you all... See more

Rated 5 out of 5 stars
Verified

Quick turn around from first call to report a fault and coming back to fit new parts and do a service on the boiler. Attend when they said they would. Will continue to use for all our business.

Company replied

Rated 5 out of 5 stars
Verified

Can’t recommend C1 highly enough. From initial survey and quotation through to install, the C1 teams customer service and level of workmanship was first class.

Rated 5 out of 5 stars
Verified

C1 were prompt, reliable and communicated well. From phoning them with no heating to having a brand new boiler fully installed was 4 days. Teresa in the office was helpful and accommodating, and David... See more

Rated 5 out of 5 stars
Verified

The engineers were courteous, punctual, tidy, explained everything clearly and did a good job (I think). The admin side of things was efficient and professional.

Rated 5 out of 5 stars
Verified

Connor was very efficient, also helpful when my wife asked him to check something else. Work completed timeously .

Rated 5 out of 5 stars
Verified

Very smart practical and organised. No fancy stuff that’s going to cost you the customer money. They hit a problem on my job they just got on and sorted it. Very happy.

Rated 5 out of 5 stars

Such a fast and efficient experience, can’t praise Connor enough for a fantastic job and also Teresa and the girls in the office, all queries answered promptly!

Rated 5 out of 5 stars
Verified

Excellent service, easy to contact through email, quick response, text messages updating on arrival time, great prices and service, would highly recommend

Rated 5 out of 5 stars
Verified

This company delivers excellent boiler servicing -reliable, punctual, and well-priced. Communication is smooth. Teresa in the office handles the administration part brilliantly, and the service techni... See more

Rated 3 out of 5 stars

I had a decent experience with C1 Gas & Heating Services Ltd. Communication was professional, and the work was done promptly at the quoted price. While the service wasn’t exceptional and could be impr... See more

Rated 5 out of 5 stars

Really pleased with the service from C1 Boilers. Really helpful and knowledgeable and did a great job from start to finish. Would highly recommend.

Rated 5 out of 5 stars
Verified

Communication to setup appointment was easy, turned up as agreed, email notification to advise of arrival time was excellent. Work was carried out quickly and efficiently, while explaining process et... See more

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Company details

  1. Boiler and Heating Service
  2. Boiler Supplier
  3. Gas Company
  4. Gas Engineer
  5. Gas Installation Service
  6. Heating Contractor

Written by the company

C1 Boilers is a local, family run heating company known for exceptional customer care and high quality workmanship. We install, service, and repair boilers across Edinburgh and the Lothians, combining expert engineering with the kind of personal service you just don’t get from bigger companies. Our customers love that we’re always on time, always respectful of their home, and never pushy. With over 300 legitimate 5-star reviews, we’ve earned a reputation for being reliable, honest, and genuinely helpful. We offer clear pricing, flexible finance, and full aftercare so you’re supported before, during, and long after your install. Choose C1 Boilers for service that actually feels personal.


Contact info

4.9

Excellent

TrustScore 5 out of 5

123 reviews

5-star
4-star
3-star
2-star
1-star


Rated 5 out of 5 stars
Verified

First class professional service

After our recent boiler service I requested an additional radiator to be retro fitted into our home. I recieved a quotation and booking the job was so easy with flexibilty on dates to suit myself.

The engineers attended and carried out the task in a professional manner, were friendly as well as informative on the plans to carry out the work. During the work the engineers were efficient, had great teamwork as well as housekeeping - working in a respectful manner, tidying as they carried out the task in a timely manner.

The engineers completed the job, tested the heating system before showing and explaining me the completed work. What a difference this work has made to our home.

I fully recommend this business, first class service at a fair price.

October 23, 2025
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Rated 5 out of 5 stars

Boiler

First class boiler service from Conner(and apprentice)once again.GIven afternoon time and received text with arrival time on the day.
Answered a couple of questions in a clear and friendly manner.
Thorough service at excellent price.
Delighted.

October 14, 2025
Unprompted review
Rated 5 out of 5 stars
Verified

Had the boiler serviced

Had the boiler serviced. Engineer arrived as arranged. Carried out the work in a very professional manner keeping me fully updated on the work carried out. Very friendly and helpful staff.

October 9, 2025
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Rated 5 out of 5 stars
Verified

I recommend C1 Boilers

I trusted the staff. The whole process was reassuring and I feel like I made a good decision. It was helpful that I don't have to pay outright and that finance was easy to arrange. No mess, no inconvenience. I'd recommend them to anyone needing a new boiler or needing their boiler fixed.

September 23, 2025
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Rated 5 out of 5 stars
Verified

C1 Boilers is my go-to destination…

C1 Boilers is my go-to destination whenever I need help.
Conor is extremely knowledgeable and explains everything very clearly and helpfully.
Always polite and on time.
Teresa is really great at sharing the processes involved, the scheduling, the costs, and the customer service.
Great people. Friendly with great energy.

September 10, 2025
Rated 5 out of 5 stars
Verified

Excellent service

Excellent service, easy to contact through email, quick response, text messages updating on arrival time, great prices and service, would highly recommend

September 2, 2025
Rated 5 out of 5 stars
Verified

Fantastic service

Communication to setup appointment was easy, turned up as agreed, email notification to advise of arrival time was excellent.
Work was carried out quickly and efficiently, while explaining process etc clearly

September 10, 2025
Rated 5 out of 5 stars
Verified

The company alerted me that the annual…

The company alerted me that the annual servicing of my boiler was due. I phoned to arrange a suitable time. I was informed of the time and informed when they would arrive. The heating engineer together with an apprentice completed the service within half an hour. They were very efficient and professional

September 2, 2025
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Rated 5 out of 5 stars
Verified

C1 Boilers

The company arranged a date that was suitable for me, they arrived on time and done a fantastic job. No mess was left when the job of replacing all the radiator valves and fitting an extra radiator. Connor was courteous and professional during the whole job. I would fully recommend C1 Boilers to everyone.

September 2, 2025
Rated 5 out of 5 stars
Verified

Excellent Annual Boiler Service

This company delivers excellent boiler servicing -reliable, punctual, and well-priced. Communication is smooth. Teresa in the office handles the administration part brilliantly, and the service technician, Connor, is both friendly and highly skilled. I’ve had consistently positive experiences and would definitely recommend them.

July 30, 2025
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Rated 5 out of 5 stars
Verified

Connor and his colleagues were excellent!

Connor and his colleagues were prompt, polite, friendly, efficient, patient, clearly knew what they were doing and did it well. They were good at listening and explaining. They kept to time, indeed stayed longer to ensure everything in our new boiler worked as it should. They were clean and cleaned up after them, too! Theresa in the office was always polite, friendly, efficient and quick to resolve any problems. I highly recommend them.

May 29, 2025
Rated 5 out of 5 stars
Verified

Extremely Reliable and couteous

Connor has been servicing our boiler for 4 years now and gets in touch to remind us of dates etc so we have less to worry about. He is knowledgeable, friendly, tidies up after him and goes the extra mile. We look forward to a wee catch up with him every year and are delighted he has made such a strong business. No hesitation in recommending him. His charge is very reasonable too.

June 30, 2025

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