How Much Does a Heat Pump Cost in the UK?
Most UK homeowners pay between £500 and £7,500 for a heat pump after the government's £7,500 Boiler Upgrade Scheme grant. Before the grant, a full installation typically runs £8,000–£15,000 — the exact figure depends on your home size, what insulation work is needed, and how many radiators need upgrading.
At a glance
- Typical cost (before grant)
- £8,000–£15,000
- After £7,500 BUS grant
- £500–£7,500
- Extra costs (radiators, insulation)
- £0–£4,000
- Annual running cost
- £500–£1,200
Get a personalised cost estimate for your home
Answer 5 quick questions and see what a heat pump would cost for your property — with the grant already applied.
Typical heat pump costs by home size
The biggest factor in price is your home's size and heat demand. Here's what to expect for a standard air source heat pump installation.
| Home size | Before grant | After £7,500 grant |
|---|---|---|
| 2-bed flat / terrace | £8,000–£10,000 | £500–£2,500 |
| 3-bed semi-detached | £10,000–£13,000 | £2,500–£5,500 |
| 4-bed detached | £13,000–£16,000 | £5,500–£8,500 |
| 5-bed+ / large detached | £15,000–£18,000 | £7,500–£10,500 |
What's included in the price?
A typical quote covers the heat pump unit, an outdoor mounting pad, a hot water cylinder (if needed), pipework connections, MCS commissioning, and electrical work. Many installers also include removing your old boiler. What's often not included: radiator upgrades, insulation improvements, and any structural work to the external wall where the unit sits. Always ask for an all-inclusive quote so there are no surprises.
The £7,500 Boiler Upgrade Scheme grant
The government's Boiler Upgrade Scheme (BUS) gives you £7,500 off the cost of an air source heat pump. This is applied directly by your installer — you don't need to pay upfront and claim back. To qualify, you need to own the property (or be a landlord), have a valid EPC, and use an MCS-certified installer.
Extra costs to budget for
The heat pump quote is rarely the whole story. Radiator upgrades run £200–£400 each, and most homes need 2–4 replaced. Topping up loft insulation costs £300–£600. If you have uninsulated cavity walls, that's another £500–£2,000. A new hot water cylinder adds £500–£1,000 if your current one is too small. And your consumer unit may need a £200–£400 upgrade to handle the extra electrical load. Not every home needs all of this — a decent installer will tell you upfront.
Frequently asked questions
How much does a heat pump cost after the government grant?
Are there any hidden costs when installing a heat pump?
How do I qualify for the £7,500 Boiler Upgrade Scheme?
Is it cheaper to install a heat pump during a renovation?
How we calculate estimates
Our estimates use published data from the Energy Saving Trust, Ofgem tariff caps, and MCS installer pricing. We model savings based on your home size, insulation level, and current heating system. All figures are indicative — your actual costs will depend on your installer's survey and quote.
Get a personalised cost estimate for your home
Answer 5 quick questions and see what a heat pump would cost for your property — with the grant already applied.