This heating cost calculator gives you a guide price for the heating job you have in mind. Pick the service, choose the size of job and read off the range. The figures reflect the typical costs on our service pages, so use them as a starting point for comparing quotes, not as a quote in themselves.
How the heating cost calculator works
Choose one of the six services: boiler and heating upgrades, central heating installation, radiator replacement, power flushing, smart thermostat installation or underfloor heating. Then pick a small, typical or large job. The calculator shows the range for that combination, supplied and fitted.
Small means a simple, single-fault or like-for-like job. Typical adds more rooms, radiators or a better specification. Large means a bigger home, more rooms or extra work such as a cylinder or screed. If your job sits between two sizes, read both ranges and use the higher as a safe budget.
What the heating cost calculator leaves out
- VAT, unless the installer states it is included
- Making good after floors, walls or ceilings are opened up
- A new gas connection or meter move
- Redecorating once the work is finished
- Extra items such as a new hot water cylinder or smart radiator valves, unless they sit in your chosen job size
Ask each engineer to say in writing what the price includes. Removal of the old equipment is normally part of the job, but check.
Using the heating cost calculator well
Start with the guide price and then collect three written quotes. If one is much lower than the rest, ask what it leaves out. If one is much higher, ask why. For a closer breakdown of each job, read the heating system upgrade cost, central heating installation cost and underfloor heating cost guides.
Final prices depend on your home, the equipment you choose and what the engineer finds on the day. Only a survey and a written quote give a firm figure.
Next steps for your heating job
Once you have a budget, you can ask local engineers to quote. Check that anyone working on a boiler or gas pipework is on the Gas Safe Register, and ask how the work will be notified under the Building Regulations, as the government's competent person schemes page explains.
Frequently asked questions
How accurate is the heating cost calculator?
It gives a guide range based on typical UK costs. Your final price depends on the property, the specification and any extra work, so use it to sense-check quotes.
Does the calculator include VAT?
The ranges are indicative, so check each quote to see whether VAT is included. Installers differ in how they show it.
Which heating job is cheapest?
A smart thermostat, from about £150, is the cheapest. A whole-house central heating installation or a wet underfloor system across a ground floor is the dearest, at £7,500 or more.
Can I price more than one job at once?
Yes. Add up the ranges, and ask whether an engineer will give a better price for doing the jobs together, such as a power flush with new radiators.
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