Boiler Services
Installation, servicing, safety checks and breakdown repair across gas, LPG and oil.
Learn more →A heating system works best when every part is sized and set up to work together - the heat source, pipework, radiators or underfloor heating, cylinder and controls. We look at the whole system, not just the part that's causing a problem, so you get a home that warms up evenly and costs less to run.
A quick self-check. If two or more of these sound familiar, it's worth a survey.
Some of my rooms never quite get warm, and a few radiators are cold at the bottom or the top.
My house takes forever to heat through, even with the heating on for hours.
I get banging, gurgling or whistling from my pipes and radiators whenever the heating comes on.
My energy bills keep climbing, even though I'm not using the heating any more than usual.
We visit, look at your current system and talk through how you use your home.
You get a clear, fixed-price quote setting out exactly what's included.
Our team installs the system with care, protecting your home as we work.
We test, balance and set up the system and controls, and show you how it all works.
We're on hand for servicing and support long after the job is finished.
Modern controls let you heat the rooms you use, when you use them. Smart thermostats, weather compensation and zoning can all help your system run more efficiently, and a well-balanced system uses less energy to reach the same comfort.
If you're thinking about the future, we can design your system to be ready for renewables - for example with radiators and pipework sized for the lower flow temperatures an air source heat pump runs at.
Explore renewables




Alongside homes, we take on commercial heating for local businesses, landlords and developers. Tell us about the site and what you need, and we'll arrange a visit and a clear, fixed quote.
A like-for-like boiler swap is usually a single day. Converting to a combi takes longer, typically a day and a half to three days depending on what has to change. A full central heating install in a three bedroom house generally takes three to five working days. We tell you which days you will be without heating and hot water before we start.
Some floorboards may need lifting to run pipework, and the heating and hot water will be off for part of the install. We plan the work to keep disruption to a minimum, protect floors and furniture, and tidy up at the end of every day.
Our workmanship is guaranteed for 2 years on new installations and 12 months on repairs, from the date the work is completed, and the terms are set out in writing with your quote. New boilers, heat pumps and controls also carry the manufacturer's warranty, typically several years, and the length depends on the product you choose. We register those for you and explain what is needed to keep them valid, which for most manufacturers means an annual service.
A power flush clears sludge and debris that can build up in older systems and cause cold spots and noisy radiators. It's often recommended when fitting a new boiler. We'll tell you honestly whether your system needs one.
Yes. We can size radiators and pipework for lower flow temperatures now, so switching to an air source heat pump later is simpler. Find out more on our renewables page.
A full system for a three bedroom house, meaning boiler, radiators, pipework and controls, typically runs from around £5,000 to £8,000 depending on the number of radiators and how much of the existing pipework can be reused. Replacing the boiler alone costs considerably less: a like-for-like gas combi swap usually falls between £2,500 and £4,000, and a system boiler between £3,000 and £4,500. Converting from a regular or system boiler to a combi sits around £4,000 because of the additional pipework. We survey first and quote a fixed price, so the figure you get is the figure you pay.
Yes. A lot of properties across the Cotswolds sit off the mains gas network, and we install, service and repair oil and LPG systems alongside gas. We are Gas Safe registered under number 970356 for all gas work.
Usually not. We check each radiator for leaks, cold spots and whether it is correctly sized for its room, and replace only the ones that are not up to the job. Upsizing is worth considering where a room has been extended or converted and the radiator was never sized for the new space, and where you might move to a heat pump later, since heat pumps run at lower temperatures and need more radiator surface to deliver the same heat. Doing it once is cheaper than doing it twice.
For most homes, yes. The Energy Saving Trust puts the saving from using heating controls properly at around £100 a year, and turning your thermostat down by a single degree at a further £120 or so. Zoning and weather compensation go further by heating only the rooms you are using, to the temperature they need, and by running the boiler at lower return temperatures where it condenses more efficiently. We will tell you honestly if the saving in your property would not justify the cost.
Installation, servicing, safety checks and breakdown repair across gas, LPG and oil.
Learn more →MCS-certified air source heat pumps, backed by the government's Boiler Upgrade Scheme grant.
Learn more →Even, gentle warmth with no radiators - a natural pairing for a heat pump system.
Learn more →"Dan and the team did an absolutely fabulous job of renovating our main bathroom. They were friendly, professional, polite and worked amazingly hard. Dan made the whole process really easy as he project managed everything. I highly recommend him for anyone that wants bathroom renovations / plumbing work. Just beware - he does such a good job, you’ll want him to do every bathroom in every house you ever own!"
"Dan project managed and fitted a complete renovation of an en-suite shower room and downstairs cloakroom. Everything was super clear, from pricing to schedule, and all work was very tidy with brilliant attention to detail. I am beyond delighted with the results and would recommend him 100%. (Just don't book him until he's been back to do my main bathroom!) Thanks again Dan and team, brilliant job all round."
"I can't praise Dan and his team more highly. They fitted a complete new heating system for me whilst I was away, as well as doing a few small plumbing jobs around the house. A perfect installation and a tidy home when I got back,. What more can you ask? Perfect! Great value too. I can't recommend them more highly."
"Dan is my go to person for all plumbing and heating jobs. From annual services to moving radiators. Most recently he's installed an additional outside tap, being flexible alongside the timing of the landscapers and going the extra mile to hide the pipework despite the extra effort. A very nice job."
"Dan has done multiple jobs for us over the years, all to a very high standard. He consistently goes the extra mile and delivers exactly what he says he will. His advice is always honest, and he never pushes unnecessary work. Can’t recommend him highly enough."
"What a lovely young man, he definitely knows how to treat an old lady on her own who almost panicked when her loo was leaking. A nice, calm young man who fixed it so quick and calmly. Hopefully I’ll never need a plumber again, but if I do I know where to go first."
"Dan replaced our old boiler, and has serviced the new one ever since. He’s friendly, reliable and well priced. The whole experience is easy from start to end and despite being busy, he’ll always fit you in. Wouldn’t hesitate to recommend him."
"Daniel came out quickly to fix a gas leak after a kitchen fitter hit a gas pipe in our home. He was professional, and the quality of his work was excellent. Highly recommend."
"Dan was a lifesaver attended at very short notice sorted ouy our burst expansion tank and got the heating and hot water back up and running promptly and quickly. Really great guy and brilliant service and support. Thoroughly recommended will definitely use Cotswold Heating and Renewables again."
"Dan serviced our Worcester Bosch boiler today. A very efficient friendly workman, took his shoes off which I appreciated 😃 very polite and professional. He explained all about the boiler and services attached to it, very knowledgable, we will definitely be using Dan again, thank you."
"Dan installed a new Worcester Bosch boiler for me, to replace a faulty one. He was very efficient, competent, polite and friendly throughout. I definitely recommend him."
"Excellent service from Dan. I drilled through a water pipe at home. Rang Dan and with out any hesitation he was there in 15 mins at unreasonable hour... great service and very professional. I definitely be using Dan again for future plumbing work."
"Dan and his team recently renovated our family bathroom and we're delighted with the result. Whether plumbing, plastering, tiling or fitting, all the team were efficient, professional and pleasant, and provided helpful advice and recommendations as needed. The bathroom has been transformed and we wouldn't hesitate to recommend them."
"Dan came out really quickly when we called him after a boiler breakdown, quickly diagnosed the fault and ordered the required parts, returning later the same day to fit them and get the boiler going again. Would definitely recommend"
Tell us a little about the job and we'll come back to you with next steps. Prefer to talk it through first? Call or email directly.
We aim to respond to every enquiry within one working day.