Boiler Replacement and Installation in Edinburgh
Is your old boiler on it’s last legs? Call today for a quote!
If you have an old, unreliable gas boiler and want peace of mind that your heating and hot water will continue to work for years to come, then a new boiler is what you need!
Call 0131 235 1236 to get a boiler replacement quote.
Professional and Reliable Gas Boiler Installers
We have been voted Edinburgh’s most trusted heating and plumbing company in the Construction and Engineering Awards 2024. We’re proud to be Edinburgh’s trusted choice for boiler installation and replacements.
- Fitting a new A-rated system or combi boiler with energy-saving smart heating controls as standard can save you money on your heating bills.
- Up to 12 years manufacturer’s guarantee and 2 year workmanship guarantee.
- Worcester Bosch and Baxi Accredited Installer.
If you’re looking for a new combi boiler and expert installers in Edinburgh, we’re here to help. With almost 20 years in the heating industry, you and your family are in safe hands. We cater to all your needs with a selection of boiler types, including combi boilers and system boilers with hot water tanks.
Specialists in heating system design and the installation of gas boilers, unvented hot water systems and renewable energy systems and recently voted the most trusted heating and plumbing company in Edinburgh for 2024.
Replacing your gas boiler is a big decision, and with Typical household energy bills increasing by 54% in April 2022 and 27% in October 2022, a new efficient boiler makes a big difference. A correctly sized gas boiler to replace an older standard efficiency model could save up to 30% on your heating costs, which could be as much as £580 a year!
Whether you need an emergency boiler replacement or want to lower your household CO2 emissions, we can survey and correctly size your new heating solution to maximise efficiency and ensure you get the most out of your purchase. Our gas engineers are qualified in central heating system design for both conventional and low-temperature heating systems.
Boiler Installation - Our 3 step process
Site Survey
Contact our office, and a member of staff will be on hand to arrange an appointment for one of our highly experienced heating experts to complete a site survey.
Quote
We'll contact you with a detailed quote. If you have any questions or would like to change something in the quote, a member of staff will be happy to discuss it in more detail.
Otherwise we can book you in for an agreed date!
Booking
If you decide to accept the quote, we will arrange a day and time to start the work and explain what will happen and how long it’s likely to take from start to finish.
We’ll even book your first service in for you if you like!

Up to 12 Year Boiler Guarantee
All qualifying replacement gas boilers installed by Thermatek Heating benefit from a Worcester Bosch product guarantee. We register your new boiler on installation so that your new boiler is fully covered against faults or failures for up to 12 years on the 8000 model*. In the unlikely event of you having an issue, then simply contact Worcester-Bosch directly, and they’ll send one of their engineers to fix it, providing absolute peace of mind for up to 12 years from the date of registration.
*Provided it is serviced annually and according to the manufacturers’ guidelines.
New Boiler Questions
From 2025 onwards the government plans to prevent natural gas boilers being installed as the heating source in new build homes only All existing homes will still be able to install natural gas boilers according to the current information.
We can be in and out for most boiler replacements within 2 days. However, if you have a simple boiler swap, it may only take 1 day.
If you are having additional work carried out by us then this will require more time at your property.
We will provide an overview of timelines and how long we expect to be with you during the quote.
If the job lasts more than a day, the engineers will clean and tidy the area before leaving at the end of the day and aim to leave you with minimal disruption to water supplies and gas while the work is taking place. At the end of the job, the lead engineer will walk you through everything you need to know and see everything with you, including apps and schedules if required, so when we leave, you have a fully functional and easy-to-use heating system.
EXCELLENT Based on 57 reviews Clare ReillyApril 4, 2025Trustindex verifies that the original source of the review is Google. Really helpful! Phoned at 7pm and they spoke through the issue, booked us in and they came by 3pm the next day as promised and fixed the issue, plus an additional issue, really quickly. Great service, would highly recommend! Tim RooneyMarch 17, 2025Trustindex verifies that the original source of the review is Google. Couldn’t recommend Thermatek enough. Allayed all our doubts about converting from gas to heat pump, quick/clean installation and very reasonably priced. Kate Cargill AdamMarch 10, 2025Trustindex verifies that the original source of the review is Google. Ryan at Thermatek is trustworthy, knowledgable and skilled. We have only had positive experiences with him. He has recently come back to do our yearly boiler service which he completed thoroughly and booked us in automatically so I didn’t have to remember to contact him. When we lost our heating, he did FaceTime with us to help us get it working again in no time. Highly recommend! Paul LoveFebruary 27, 2025Trustindex verifies that the original source of the review is Google. Thermatek installed a Tado system for me, and they did a great job. The whole process was quick, well-organized, and really professional. No hassle, just got it done efficiently while answering all my questions. I’d definitely recommend them! Jack Gemmell ToalFebruary 12, 2025Trustindex verifies that the original source of the review is Google. Brilliant fountains blogFebruary 10, 2025Trustindex verifies that the original source of the review is Google. Thermatek installed a Greenstar 4000 boiler at our house in January and we would highly recommend them for service, great value for money, professionalism and dedication. The team came, carried out a messy and complicated job with minimum fuss and cleaned up and replaced everything as if they had never been there. All within one day. Boiler works well and Ryan was very good at explaining everything so if you are wondering which company to choose for boiler repairs/installation, look no further. Chris SummersellFebruary 8, 2025Trustindex verifies that the original source of the review is Google. Outstanding service, not only dealt with boiler issue quickly and effectively, went above and beyond in their support. Highly recommend RebeccaJanuary 29, 2025Trustindex verifies that the original source of the review is Google. Ryan was great. Phoned him and he came and fitted a new gas pipe to fit the new oven. I have now used him twice in less than a fortnight I wouldn’t think twice about using him. He arrived promptly when he said he would and did a great job thank you Michael ShawJanuary 17, 2025Trustindex verifies that the original source of the review is Google. Excellent, fast service in sorting out a serious energy issue. Imogen GibsonDecember 21, 2024Trustindex verifies that the original source of the review is Google. Punctual, friendly and efficient as well as being reasonably priced. Will definitely use Thermatek again.
Our Accreditations



