“How much is a new boiler?” is the question we’re asked most. The honest answer is: it depends. Here’s what drives the price, typical UK ranges, and how to keep your installation affordable.
Typical UK price ranges
As a general guide for 2026, a fully fitted combi boiler usually costs between roughly £1,800 and £3,500, while system and regular boiler installations often range from around £2,200 to £4,500. These are national guide figures, not quotes, your home’s specifics decide the final price. See our full boiler installation costs page for a breakdown.
What affects the price
- Boiler type and brand: combi, system or regular, plus the make, output and warranty length.
- Like-for-like vs conversion: keeping the same boiler type and position is cheapest; converting or relocating adds pipework and labour.
- System condition: a magnetic filter, power flush or new radiators may be recommended to protect your investment.
- Controls: smart thermostats and advanced controls add cost but can improve efficiency and comfort.
- Access and flue: awkward flue routes or difficult access take longer.
Is the cheapest quote the best value?
Not always. A correctly sized, efficient boiler installed properly with good controls will cost less to run and last longer. A suspiciously low quote may skip important steps or use lower-quality parts. Always compare like for like, and insist on a clear, itemised written quotation.
How to keep costs down
- Choose a like-for-like replacement in the same location where possible.
- Pick an appropriately sized boiler rather than the biggest available.
- Balance warranty length against price, longer cover adds peace of mind.
- Keep up annual servicing to protect efficiency and warranty.
Beware hidden extras
A trustworthy quote should include the boiler, controls, fittings, labour, removal of the old unit and commissioning. Ask for anything optional to be itemised separately so you can make an informed choice.
Get your exact price
Guide ranges are a starting point, but only a proper quote tells you your real cost. Ours are free, fixed and carry no obligation, request yours today.