Boiler guides & advice
Independent guides to help you cost, size and choose a new boiler - then compare quotes from up to 3 Gas Safe registered installers.
Cost Guides
Cost Guides
How Much Does a New Boiler Cost in the UK? (2026)
A new boiler in the UK typically costs between £1,800 and £3,500 fully fitted, with the final price set by the type of boiler you choose, the brand and warranty, how much pipework the job needs and where you live.
Read guide →
Cost Guides
Combi Boiler Replacement Cost: 2026 UK Prices
Replacing an existing combi boiler with a new one usually costs between £1,800 and £2,600 fitted, rising to £3,400 or more if the boiler moves position or the system needs upgrading at the same time.
Read guide →
Cost Guides
Boiler Installation Cost: What You Are Actually Paying For
Boiler installation labour in the UK typically costs £500 to £1,500 depending on the complexity of the job, with a straightforward swap taking one day and a system conversion taking two to three.
Read guide →
Cost Guides
Boiler Grants in the UK: What Help Exists and Who Qualifies
Government-backed help with heating in the UK is generally aimed at low-income households and at low-carbon systems such as heat pumps, so a standard gas boiler replacement is only funded in specific circumstances.
Read guide →Buyer's Guides
Buyer's Guides
Combi vs System vs Regular Boiler: Which Do You Need?
Combi boilers heat water on demand and suit smaller homes with one bathroom, system boilers use a cylinder and handle higher hot water demand, and regular boilers suit older properties with existing tanks and low mains pressure.
Read guide →Buyer's Guides
What Size Boiler Do I Need? A kW Sizing Guide
Most UK homes need a combi boiler between 24kW and 35kW, with the right output set by how much hot water you use rather than the size of the house, while system and regular boilers are sized on heat loss and are usually smaller.
Read guide →Buyer's Guides
Boiler Brands Compared: What Actually Matters When Choosing
The strongest boiler brands in the UK compete on warranty length, parts availability and hot water performance rather than on efficiency, which is now tightly grouped across almost every model sold.
Read guide →Buyer's Guides
Boiler Warranties Explained: From 2 Years to 12
UK boiler warranties run from around 2 to 12 years and are almost always conditional on registering the boiler shortly after installation and having it serviced every year by a qualified engineer.
Read guide →Boiler Replacement
Boiler Replacement
10 Signs You Need a New Boiler
Most gas boilers last between 10 and 15 years, and the clearest signals that yours is nearing the end are repeated breakdowns, rising bills, parts becoming hard to source and a noticeable drop in heating or hot water performance.
Read guide →Boiler Replacement
Converting a Back Boiler to a Combi: Cost and Process
Converting a back boiler to a combi typically costs between £3,000 and £4,500 and takes two to three days, because the old appliance is removed from behind the fireplace and the hot water cylinder and loft tanks come out at the same time.
Read guide →Efficiency & Safety
Efficiency & Safety
Boiler Running Costs: How to Cut Your Heating Bills
Heating and hot water account for the majority of a typical UK home's energy use, and the biggest levers on that cost are the efficiency of the boiler, how well the property holds heat and how the controls are set.
Read guide →Efficiency & Safety
Gas Safe Register Explained: Checks to Make Before You Book
Anyone carrying out work on a gas boiler in the UK must be on the Gas Safe Register, and you can verify any engineer in under a minute by checking both sides of their ID card and confirming the licence number on the official register.
Read guide →Compare quotes from up to 3 trusted installers
Tell us about your boiler - it takes under a minute. Free and no obligation.
Step 1 of 5
Are you the homeowner?
Installers need the property owner's go-ahead before work can start.
FAQ
Frequently Asked Questions
How much does a new boiler cost?
Most UK homeowners pay somewhere between GBP 1,800 and GBP 3,500 fitted, depending on the boiler, the brand, the warranty and how much pipework the job needs. A like-for-like swap sits at the lower end; moving the boiler or converting to a different system costs more. Comparing several quotes is the quickest way to see a fair price for your home.
How many quotes will I get?
We match your enquiry with up to 3 trusted installers, so you can compare quotes side by side without ringing round yourself.
Are the installers Gas Safe registered?
Yes. Working on a gas boiler legally requires Gas Safe registration, and we only accept installers who hold it. You can check any engineer's registration number on the Gas Safe Register before work starts.
How quickly will installers get in touch?
Most aim to contact you the same working day. If your boiler has failed completely, say so in your enquiry so installers can prioritise it.
Is there any cost or obligation?
No. Comparing quotes through Boiler Quotes is completely free, and there is no obligation to go ahead with any installer.