Endorsed by Which?

C1 Boilers LTD

4.9

41 Reviews

Opening Hours
Today - 24 hours
  • Monday - 24 hours
  • Tuesday - 24 hours
  • Wednesday - 24 hours
  • Thursday - 24 hours
  • Friday - 24 hours
  • Saturday - 24 hours
  • Sunday - 24 hours

About

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.

What we do

  • Gas installers

    • Gas Fires
  • Boiler, central heating and gas engineers

    • Boiler installation
    • Boiler repair
    • Boiler servicing
    • Gas cooker installation
    • Gas safety testing and inspection
    • Power flushing
    • Radiators and central heating

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
41 reviews
Customer Service
4.9
Quality
5.0
Value
5.0
Sort by
Highly recommend - boiler service
Customer Service
Quality
Value
From the initial contact with Teresa to the boiler being serviced by Connor, everything was very professional. Connor arrived on time, took time to ask how the boiler had been and done the job to a high standard. We were really happy with the service we received and would highly recommend this company.
Customer in East Lothian Posted on 01/04/2026 , work completed 16/03/2026
New Combi Boiler Installation
Customer Service
Quality
Value
From initial contact establishing needs and costs everything was fully explained by Connor with no unexpected add ons. The fitters arrived on day and time agreed, protective covers were used offering protection of carpets. Once started work was carried out efficiently and quietly. Old boiler was disconnected and placed outside for collection by a recycling company at no cost to myself. Chemical flush was carried out and new combi boiler fitted. Work was complteted in one day and all areas left spotlessly clean any debris was taken away by fitters. The office manager Teresa was extremely helpful from initial contact through to end with all paperwork sent by e mail as and when with no delays. A very professional operation from start to finish.
Customer in Midlothian Posted on 21/03/2026 , work completed 18/03/2026
Highly recommend heating engineers
Customer Service
Quality
Value
Annual service highlighted a faulty seal. Seal was replaced and service was completed in super fast time. Amazing and speedy service from Connor & his team. Would highly recommend.
Customer in Edinburgh Posted on 19/02/2026 , work completed 16/02/2026
Reliable and professional service
Customer Service
Quality
Value
C1 Boilers serviced my boiler and hot water tank. The engineer arrived on time, explained what was being done, and everything was completed without any issues. This is the second time I’ve used them and I’ve been happy both times. Good value and reliable service.
Customer in East Lothian Posted on 21/01/2026 , work completed 12/01/2026
Install Hive to Intergas Boiler
Customer Service
Quality
Value
Excellent service from C1 Boilers. Arrived promptly on time and completed installation of Hive Thermostat. Very professional service would highly recommend this company.
Customer in East Lothian Posted on 15/01/2026 , work completed 13/01/2026
First class service, great job!!
Customer Service
Quality
Value
After our recent boiler service, I requested an additional radiator to be retrofitted into our home. I received a quotation, and booking the job was so easy with flexibility on dates to suit me. The engineers attended and carried out the task in a professional manner, and 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 and showed and explained to me the completed work. What a difference this work has made to our home. I fully recommend this business, with first-class service at a fair price.
Customer in Edinburgh Posted on 24/10/2025 , work completed 23/10/2025
Always very efficient and thorough
Customer Service
Quality
Value
Serviced the boiler again this year, and I couldn't be happier. They are always available when you contact them and are very honest if they see any problems. A great company that I would highly recommend to anyone
Customer in Midlothian Posted on 24/10/2025 , work completed 20/10/2025
Very good service
Customer Service
Quality
Value
Had boiler serviced. Engineer arrived as arranged and provided a very satisfactory inspection and service. Has a friendly manner and explained all the work carried out clearly. Would definitely use this company again.
Customer in Edinburgh Posted on 12/10/2025 , work completed 09/10/2025
Great and friendly service
Customer Service
Quality
Value
Connor has been coming to service our boiler for 3 years now. He is very friendly and has always given us an understanding of the service and any improvements/repairs required to maintain our boiler working well throughout the year.
Customer in Edinburgh Posted on 11/09/2025 , work completed 09/09/2025
A repeat customer, and will continue to be a customer
Customer Service
Quality
Value
5 star service for all engagement, from appointment booking to services delivered. They also send a reminder when your boiler service is due. Very friendly and helpful staff. Highly recommend!
Customer in Edinburgh Posted on 06/09/2025 , work completed 01/09/2025