What it costs
Real installed prices for 2026, before and after grant, and the six things that actually move the number on your property.
CostsReal installed prices for 2026, what you actually pay after grant, and an honest account of why two quotes on identical houses can differ by four thousand pounds.
Tell us about your property and an MCS-certified engineer will be in touch, usually the same working day.
| Property | Installed | Grant | Net |
|---|---|---|---|
| Flat or small property | £6,000 – £9,000 | £7,500 | £0 – £1,500 |
| 2–3 bed house | £8,000 – £11,000 | £7,500 | £500 – £3,500 |
| 3–4 bed house | £9,000 – £14,000 | £7,500 | £1,500 – £6,500 |
| 4–5 bed or period | £14,000 – £20,000 | £7,500 | £6,500 – £12,500 |
| Large country property | £20,000 – £30,000+ | £7,500 | £12,500 – £22,500+ |
Installation is zero rated for VAT, so these are the figures you pay. In Scotland the grant works differently, and there is an interest-free loan on top: see grants by nation.
The unit is usually under half the bill. This surprises almost everybody.
| Element | Typical cost |
|---|---|
| Heat pump unit | £3,500 – £5,500 |
| Hot water cylinder | £1,000 – £2,000 |
| Radiator upsizing | £0 – £3,500 |
| Pipework, fittings, controls | £1,200 – £2,500 |
| Labour, survey and design | £2,000 – £3,500 |
| Electrical works | £300 – £1,200 |
| Scaffolding, making good, extras | £0 – £800 |
Price alone tells you very little. Ask all four of these:
A quote that is £2,000 cheaper because it runs at a higher flow temperature is not cheaper. You pay the difference back in electricity, with interest, and you live in a colder house while you do it.
After grant, frequently yes. A premium gas boiler replacement with a system flush and controls lands around £3,000 to £4,500. A net heat pump cost of £1,500 to £3,500 on a well-suited property genuinely undercuts that, and you get a system that lasts longer. On a poorly suited property needing eight radiators and a cylinder, it does not.
£8,000 to £14,000 installed for most UK houses, less for a flat, more for large or period property. After the £7,500 grant in England and Wales most households pay £1,500 to £6,500 net.
Around £11,000 installed for a typical three or four bedroom house, so roughly £3,500 net after the £7,500 grant. Averages are misleading here though: radiator upsizing alone can move a quote by £3,500 between two identical-looking houses.
Installation and equipment together run £8,000 to £14,000 for most homes. The heat pump itself is only £3,500 to £5,500 of that. Cylinder, radiators, pipework, labour and electrics make up the rest. After grant, expect £1,500 to £6,500.
Usually because they are quoting different design flow temperatures and therefore different amounts of radiator work, or because one includes the cylinder and radiators and the other quietly does not. Always compare the design flow temperature and the scope, not just the headline price.
After grant it often is on a well-suited property. A premium boiler replacement is £3,000 to £4,500, and a net heat pump cost can be under that. On a property needing a cylinder and eight radiators it will not be.
There should not be. The things that catch people out are cylinder installation where none existed, radiator changes, electrical supply upgrades and making good after pipework. All four are identified at survey and should be priced before you commit.
Real installed prices for 2026, before and after grant, and the six things that actually move the number on your property.
CostsThe Boiler Upgrade Scheme in England and Wales, Home Energy Scotland north of the border, and what applies in Northern Ireland.
GrantsSurvey, design, grant, installation and commissioning, with honest timescales and a clear account of the disruption.
ProcessWhy sizing comes from a room-by-room heat loss calculation and never from floor area or your old boiler's output.
SizingWhich radiators need upsizing at a lower flow temperature, and why this is the single biggest swing factor in your quote.
RadiatorsWhy heat pumps need a cylinder, what happens if you are on a combi, and how much space you actually need to find.
Hot waterUK coverage
We install air source heat pumps nationwide through MCS-certified regional teams. Grant support differs between England, Wales, Scotland and Northern Ireland, and the regional pages set out what applies where you are.
Get a free, no-obligation quote for heat pump installation in the UK, with the grant deducted so you see the real figure. We come back to you the same working day.