Heat pump cost in London, 2026
Our last 10 heat pump quotations came in between £12,490 and £20,275 before the grant. Here is what sits inside those numbers.
- £12,490+Our lowest of the last 10, before the grant
- £7,500Grant, taken off the invoice
- 0%VAT on the installation
- £5,000From, after the grant
Book a free survey
Six questions about the house, a price with the £7,500 grant already off, and then we book the survey that fixes it.
Accredited, and fitting the brands you know
Heat pumps we have already fitted
The jobs behind those numbers, photographed on the day. Tap one for the whole job.
Heat pump and solar
N21
Winchmore Hill
Air source heat pump with roof-mounted solar
The panels sit across the rear pitch and the heat pump at the side of the house, which is the pairing that lets the pump run on its own generation through the middle of the day.
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Heat pump
N22
Wood Green
Samsung monobloc air source heat pump
Stood on a levelled base built up out of the border rather than on soil, so the feet stay out of standing water and the unit does not settle out of level over a winter.
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Heat pump
EN3
Enfield
Samsung monobloc air source heat pump
Set tight against the flank wall on anti-vibration feet, where it takes up none of the usable garden and the pipe run to the cylinder stays short.
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Heat pump
EN3
Enfield
Vaillant aroTHERM plus 7 kW air source heat pump
Stood on rubber anti-vibration blocks on the existing patio slabs rather than on a new base, against the rear fence and beside the drainage the house already had.
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Heat pump, solar and battery
N15
Tottenham
Air source heat pump with solar and battery storage
The whole electrical side on one wall: inverter, battery modules and every isolator in reach, with the conduit dressed in straight runs so a fault years from now can be traced without stripping the wall.
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Heat pump
NW1
Camden
Samsung monobloc air source heat pump
Levelled on packers on an existing tiled patio rather than bolted through it, so the tiling stays intact and the unit still sits dead flat.
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Heat pump
N12
North Finchley
Samsung air source heat pump with hydrobox
Heat pump and hydrobox both outside in the side passage, which keeps the whole system out of the house and leaves the cupboard the old boiler used.
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Heat pump
EN4
Barnet
Cascade pair of air source heat pumps
Two machines in cascade on a flat roof, flow and return in insulated copper with isolating valves on each leg, so one can be shut down and worked on while the other keeps the building warm.
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Heat pump
E11
Leytonstone
Samsung monobloc air source heat pump
On its own slab set clear of the fence line, with the condensate taken away below ground level instead of being left to run across the paving and freeze.
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Heat pump
N21
Winchmore Hill
Mitsubishi Ecodan air source heat pump
An Ecodan stood off the boundary fence far enough that the fan discharge is not bouncing straight back off it, which is what makes a badly sited unit sound louder than it is.
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Heat pump
TW9
Richmond
Air source heat pump
Flow and return brought up the wall as one insulated pair in a single clipped run, which is the difference between pipework that looks designed and pipework that looks added.
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Heat pump
SW19
Wimbledon
Vaillant twin-fan air source heat pump
A larger twin-fan machine raised onto a brick plinth, which lifts the coil clear of leaf litter and puts the fans above the level a low fence would reflect.
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Heat pump
KT1
Kingston upon Thames
Bosch air source heat pump
Installed on a flat roof on a raised frame, so the roof covering carries no point load and rainwater still runs freely underneath.
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Heat pump
CR2
South Croydon
Samsung air source heat pump
Fitted down the side passage on a proper base, with the isolator mounted at the house wall where it can be reached without walking past the unit.
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Heat pump
KT19
Epsom
Samsung air source heat pump
Set into a planted border on a hard base, far enough off the wall for the service access the manufacturer asks for and close enough that the pipe run stays short.
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Heat pump
KT12
Walton-on-Thames
Samsung air source heat pump
Sited round the corner from the conservatory glazing rather than beside it, because a fan discharging at glass is the most common cause of a noise complaint about a unit that is running perfectly.
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Heat pump and battery
HP1
Hemel Hempstead
Samsung heat pump with Tesla Powerwall
Heat pump and battery on the same elevation, so the pump can be run off stored generation through the evening peak instead of off the most expensive electricity of the day.
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Heat pump
W13
West Ealing
Vaillant aroTHERM plus air source heat pump
An aroTHERM plus on a poured pad against the boundary fence, with the drain point brought out through the pad so the defrost water has somewhere to go.
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Heat pump
EN3
Enfield
Vaillant hot water cylinder and controller
The cylinder from the same job, in the cupboard the old boiler's hot water came from, with the controller at eye height and the valves grouped where an engineer can reach them.
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Heat pump
N14
Southgate
Vaillant aroTHERM plus air source heat pump
A gas boiler out and a heat pump in over three days, a few streets from our own base. The unit stands beside the garden decking on anti-vibration feet, with the pipework taken along the fence line.
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Heat pump
EN4
Cockfosters
Vaillant aroTHERM plus 7 kW air source heat pump
Replaced an old gas boiler in three days. Raised on feet over a gravel bed at the side of the garden, so the defrost water drains away rather than pooling round the base.
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Heat pump
N1
Islington
Vaillant aroTHERM plus 7 kW air source heat pump
There was no room for it in the garden, so it went on the flat roof, stood on rubber blocks over a protective mat so the roof covering carries no point load.
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Heat pump, solar and battery
N4
Finsbury Park
Vaillant air source heat pump with solar panels and a battery
The panels on the roof run the heat pump through the day and the battery carries it into the evening, so the house buys far less from the grid. The unit sits on raised feet against the rear wall.
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Heat pump
N8
Hornsey
Vaillant aroTHERM plus air source heat pump
The owner wanted the indoor equipment out of the living space, so it went into the loft. The outdoor unit has its own base in the garden. Three days, gas boiler out.
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Heat pump
E9
Hackney
Vaillant aroTHERM plus air source heat pump
Fitted in three days as part of a renovation, replacing the gas boiler. It now runs the underfloor heating and the hot water, from a unit on blocks in the side return.
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Heat pump
E1
London
Vaillant aroTHERM plus 7 kW air source heat pump
Built around underfloor heating during a renovation: the old system out and the heat pump running in three days, set on anti-vibration feet on a level base against the fence.
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Heat pump
E4
Chingford
Vaillant aroTHERM plus air source heat pump
A smaller unit, sized to what the house actually needs rather than rounded up, fitted in three days during a renovation. It stands on blocks against the house wall.
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Heat pump
NW7
Mill Hill
Vaillant aroTHERM plus air source heat pump
Gas boiler to heat pump in three days, with the grant approved within 48 hours. The unit stands on anti-vibration feet on a concrete pad close to the house, which keeps the pipe run short.
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Heat pump
NW10
Neasden
Vaillant aroTHERM plus air source heat pump
Set into the corner of the garden against the fence on a raised base, clear of the lawn, replacing a gas boiler over three days.
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Heat pump
W14
Holland Park
Vaillant aroTHERM plus 7 kW air source heat pump
A Holland Park house taken off gas in three days. The outdoor unit fits a narrow side passage, and the cylinder is only a short run away from it.
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Heat pump
W5
Ealing
Samsung 12 kW high temperature air source heat pump
A two-zone system with a 300-litre cylinder and a buffer tank, 15 metres of pipework run underground to the unit on its own concrete base, and radiators replaced where they were too small for a heat pump.
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Heat pump
TW8
Brentford
Vaillant aroTHERM plus 7 kW with a 300-litre cylinder
Outside, the unit stands against the side wall on its feet. Inside, a 300-litre uniSTOR cylinder, wireless controls and a 25-litre buffer vessel.
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What will a heat pump cost for your home?
Six quick questions, then an indicative price with the £7,500 grant shown as its own line. Built from our own quotations.
The itemised rates: every line, at our rates
What each part of a heat pump installation costs, off our own quotation template.
An air source heat pump with a hot water cylinder is £12,500 to £15,000 for a small house and £15,000 to £19,000 for a four bedroom one, before the Boiler Upgrade Scheme grant. Take £7,500 off for the grant, which we apply for and redeem as part of the job.
Those are our own figures. The 10 house quotations we issued between July and September 2026 landed at £12,490, £12,975, £14,320, £15,050, £15,759, £15,948, £15,985, £17,500, £17,831 and £20,275. The top one included fourteen radiator upgrades and moving the boiler. VAT is zero.
| Item | Our rate | What it is |
|---|---|---|
| Heat pump, 8 kW monobloc | £2,500 to £2,865 | The machine itself, R290 refrigerant |
| Heat pump, 16 kW | £4,450 to £4,700 | For a large or poorly insulated house |
| Hot water cylinder, 250 litre | £1,100 to £1,650 | Replaces the boiler's hot water job |
| Buffer vessel with pump | £485 to £1,200 | Stops the pump short cycling |
| Controls and zoning | £185 to £845 | Wi-Fi controller, or a two zone system |
| Installation materials | £1,370 to £2,115 | Pipe, cable, insulation, filter, valves |
| The service block | £7,050 | Installation, cylinder, grant application, building control, DNO, MCS certification, warranty registration and grant redemption |
| Radiator upgrade | £415 to £490 each | K2 radiator and the labour to fit it |
| Concrete base | £395 to £899 | Where there is nothing solid to stand it on |
| Dedicated fuse board | £495 to £500 | Nearly always needed |
| Standing discount | −£825 | Comes off nearly every quotation we issue |
The service block is the part most installers do not itemise. It covers the £7,500 grant application and redemption, the building control certificate, the DNO commissioning and the MCS certification, all of which have to happen for the grant to be paid.
What the price includes. Nothing added later.
Everything below is inside the figure.
- The grant, done for youWe apply for the £7,500 Boiler Upgrade Scheme voucher, you consent to it by email, and we redeem it after the installation. It comes off the price rather than being something you claim back.
- MCS certificationRegistration NIC-601634. Without an MCS certified installation there is no grant, and the certificate is issued in Electro Heating Limited's name.
- The warranty7 years on the heat pump, 25 years on the cylinder's stainless steel, plus an insurance backed warranty registered on your behalf.
Questions people actually ask
Why is a heat pump more than a boiler?
Because it is not one item. The machine is £2,500 to £4,700; the rest is a hot water cylinder, a buffer, controls, a dedicated electrical supply, the pipework to carry a lower flow temperature, and roughly £7,050 of installation, certification and grant work that a boiler swap does not involve.
After the £7,500 grant the gap narrows a long way, and the running cost is the other half of the answer.
Do I definitely get the £7,500?
The property has to qualify: a valid EPC without outstanding loft or cavity wall insulation recommendations, and the system being replaced has to be eligible. We check before we quote and we tell you either way.
We will not put a grant in a quotation until the voucher is confirmed, because a price that depends on money you might not get is not a price.
Will my radiators need changing?
Some of them usually do, because a heat pump runs a lower flow temperature and a radiator sized for 70 degrees will not put out the same heat at 45. We price it at £415 to £490 per radiator including the labour.
The room by room heat loss survey is what decides which ones, and it happens before the quotation, not after.
Can I have cooling from it too?
Not from an air-to-water heat pump feeding radiators, no. If cooling matters to you, an air-to-air heat pump is the machine that does both, and that is what most people call air conditioning.
Air-to-air heat pumps are the other half of what we install, and they carry a different grant.
A heat pump runs on electricity. Make your own.
Fitted with the heat pump, on the same survey and the same certification.
The survey is free and the written price is fixed
We measure the property, tell you what it needs and put a price in writing that does not move.
Monday to Friday 9am to 7pm, Saturday 10am to 3pm, Sunday closed
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