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The costs of the materials will vary depending on the system and specification you opt for. You will need to factor in the cost of your boiler, radiators and controls, including pipework, plus the cost of having them all installed. As a rough guide, to install central heating into an average three-bed property with no heating system will cost between around £3,235–£4,200, based on a tradesperson’s day rate of around £200, plus £100 per day for a labourer if they are needed.


Installing Central Heating: Step-by-Step

1. Choose a boiler and select the radiators that will offer adequate heating for your home, along with new controls (perhaps with the aid of a heating engineer).

2. Your engineer should be able to help you come up with a plan for the system you want to install. You will also need to decide on a good spot for your new boiler and where you want to position your radiators.

3. The radiators are usually installed first, at around four to six inches above floor level.

4. The pipes are then laid from the radiators and valves to the boiler, after which the controls are then installed.

5. The water (and, in some cases, the gas) is shut off while the boiler is installed.

6. All of the radiator vents will be closed, the system filled with water and each radiator allowed to vent through. Finally, the boiler can be switched on and the flow of heated water balanced using the valves.

Our estimate: 3–5 days; £3–4,200

Which System?

Combi: Combination boiler systems heat the water as you need it — so no need for a hot water storage tank. They also use mains water pressure so there is no need for an overflow tank.
Gravity-Fed Systems: It can occasionally be better to upgrade these systems rather than replace. The negatives though include variable flow and the space the cylinders and expansion tank requires.
High-Pressure Systems: These systems use mains water pressure, so they usually give lots of hot water at a good flow. They do, however, require a hot water tank which can add to installation costs.