Detached houses
Heat pumps for detached houses
Detached homes are often excellent candidates — usually with garden space for the unit and room for a cylinder. Here's what size and cost to expect.
Heat pumps for: Detached Semi-detached Terraced Cottage Victorian New build Bungalow Flat
Detached houses are among the most straightforward homes for a heat pump: they typically have garden or side space for the outdoor unit, room indoors for a hot water cylinder, and no shared walls to consider. The main variable is size — detached homes range from modest three-beds to large family houses, and that drives the system size and cost.
What matters most for detached homes
- Floor area and heat loss. Bigger homes need bigger systems. Insulation makes a real difference to both size and running cost.
- Unit placement. Usually easy — a side or rear wall with airflow. Detached homes rarely have boundary-proximity issues.
- Radiators. A few rooms may need larger radiators; rarely the whole house.
Typical size and cost
| Typical system size | Before grant | After £7,500 grant |
|---|---|---|
| 9–14 kW | £13,000–£23,000 | £5,500–£15,500 |
Get a tailored figure with the cost calculator, or read the full cost guide.
Common questions
Are heat pumps good for detached houses?
Yes — detached homes usually have space for the outdoor unit and a cylinder, and no shared walls, making them among the most straightforward properties. Size depends on floor area and insulation.
What size heat pump does a detached house need?
Often 9–14 kW depending on size and insulation, though a smaller well-insulated detached home may need less. A heat-loss survey gives the exact figure.
How much does a heat pump cost for a detached house?
Typically £13,000–£23,000 before the grant, or roughly £5,500–£15,500 after the £7,500 Boiler Upgrade Scheme grant, depending on size and any radiator upgrades.
Do large detached homes need more radiator changes?
Sometimes, because there are more rooms, but rarely all of them. The survey identifies which radiators need upsizing to run at heat-pump temperatures.
See the cost for your home
The calculator sizes a system for your property type and applies the grant — an instant estimate, no contact details needed.