Central heating installation cost in the UK
A new central heating installation in the UK typically costs between £3,500 and £6,500 for a complete system in a 2–3 bed home, including boiler, radiators, pipework and controls. Larger 4–5 bed homes run £5,500–£8,500. Replacing an existing system with new radiators and pipework adds £1,500–£3,000 over a boiler-only swap.
Homeowners researching this typically also price up boiler installation cost in the uk, boiler replacement cost in the uk and combi boiler installation cost in the uk. For wider context, browse our bathroom pricing, kitchen pricing and trades day rates.
Cost table
| Item | Typical range (GBP) |
|---|---|
Full system, 2 bed flat | £3,000–£4,500 |
Full system, 3 bed house | £3,500–£6,500 |
Full system, 4 bed detached | £5,500–£8,500 |
Adding heating to extension (3–4 radiators) | £1,800–£3,500 |
Conventional system rebuild (cylinder + tanks) | £5,500–£9,000 |
Labour costs
Most full installs take 3–6 days for a Gas Safe team. Larger homes and old properties with floorboard lifts run longer.
| Item | Typical range (GBP) |
|---|---|
Gas Safe installer (3–6 days) | £1,200–£2,800 |
Pipework first fix (per radiator) | £80–£180/rad |
Radiator fit & balance (per radiator) | £60–£140/rad |
Smart thermostat / zone valves | £200–£600 |
Powerflush / system clean | £300–£600 |
Materials costs
Boiler, radiators and pipework dominate. TRVs (thermostatic radiator valves) and smart controls are now standard.
| Item | Typical range (GBP) |
|---|---|
Combi boiler (mid range) | £800–£1,700 |
Radiator — standard double panel | £45–£180/each |
Designer / vertical radiator | £180–£600/each |
Copper pipe (per m, supplied) | £6–£14/m |
TRV pair (each radiator) | £18–£60/each |
Smart thermostat (Hive, Nest, Tado) | £120–£280 |
Factors affecting cost in the UK
- ·Number of radiators — typical UK install includes 7–12 radiators.
- ·Pipework route — solid floors require chasing or surface boxing.
- ·Boiler type — combi for most homes, system or conventional for larger or low-pressure homes.
- ·Zoning — single-zone vs multi-zone with smart valves (£200–£600 extra).
- ·Region — London adds 20–30%.
Ways to reduce cost
- ·Plan central heating during a wider renovation — pipework while floors are up is much cheaper.
- ·Use standard panel radiators rather than designer vertical radiators (cost 3–10× more).
- ·Combine with insulation upgrades — less heat loss = smaller boiler & lower bills.
- ·Pick a mid-range combi with 10-year warranty (Worcester 4000, Vaillant ecoTEC, Ideal Vogue).
- ·Avoid running new gas supply farther than necessary — install boiler near the meter.
Frequently asked questions
- How long does central heating installation take?
- 3–6 days for a typical 3-bed home. Larger homes and conventional system rebuilds take 5–10 days.
- Combi or system boiler for a new install?
- Combi for most 1–3 bath homes; system boiler with unvented cylinder for larger homes with simultaneous hot water draws.
- Do I need a Gas Safe engineer for the full install?
- Yes — anyone installing or altering gas appliances must be Gas Safe registered and will issue commissioning paperwork.
- Should I add zones to my central heating?
- Worthwhile in homes over 100 m² — separate upstairs/downstairs zones cut bills 10–18% and improve comfort.
- Is underfloor heating an alternative?
- Yes — common in extensions and ground-floor open plans. Adds £40–£80 per m² installed; pairs well with heat pumps.
- Does central heating add value to my home?
- Yes — UK homes without central heating sell at a clear discount. Modern installs with smart controls add 1–3% to property value.