How much does an air source heat pump cost in Bexleyheath in 2026?
26 September 2026 · 8 min read
Real 2026 prices by property type, how the £7,500 grant is deducted upfront, and the five factors that drive the difference between quotes.
Key takeaways
- Most Bexleyheath homes pay £2,000-£8,500 after the grant
- The £7,500 BUS grant is deducted from your quote upfront
- VAT is 0% on installs until 31 March 2027
- Heat loss and radiators are the biggest cost factors
- Always use an MCS-certified installer to qualify for the grant
What a heat pump costs in Bexleyheath
Most Bexleyheath homeowners pay between £2,000 and £8,500 for an air source heat pump in 2026. That is after the £7,500 Boiler Upgrade Scheme grant. Before the grant, a typical install costs £10,000 to £16,000.
Your final price depends on your home's size, heat loss and radiators. Only a proper heat-loss survey gives you an exact figure.
What is the average heat pump cost in 2026?
The national average gives you a useful benchmark. Half of the air source heat pumps installed under the Boiler Upgrade Scheme in April to June 2026 cost between £11,128 and £15,627 before the grant, with a median of £12,908 for a typical 8kW system.
Take off the £7,500 grant and the median drops to about £5,400. Smaller homes often pay far less.
Heat pump prices in Bexleyheath by property type
Here is what we typically see across Bexley. These are guide prices only, confirmed at survey, because every home loses heat differently.
- 2-3 bed terrace or small semi (5-6kW) — £9,500-£11,000 before grant, from £2,000 after
- 3-bed 1930s semi (6-8kW) — £11,000-£13,000 before grant, £3,500-£5,500 after
- 4-bed detached (10-12kW) — £13,000-£16,000 before grant, £5,500-£8,500 after
What affects the cost of an air source heat pump?
Five things drive most of the price difference between quotes.
Many Bexleyheath homes are 1930s semis. They often have solid brick or unfilled cavity walls. Topping up loft insulation first can shrink your unit size and your bill.
- Heat loss — draughty homes need a bigger, pricier unit
- Radiators — some may need upsizing to run at lower temperatures
- Hot water cylinder — combi boiler homes usually need one fitted
- Pipework — old microbore pipes may need replacing
- Electrics — some homes need a consumer unit upgrade
How does the £7,500 Boiler Upgrade Scheme work?
The Boiler Upgrade Scheme is a government grant for low-carbon heating. It pays £7,500 towards an air source heat pump in England and Wales.
You do not claim it yourself. Your MCS-certified installer applies and deducts it from your quote. At Cool Renewables, we handle the whole application for you.
There is another saving too. Installed heat pumps currently have 0% VAT until 31 March 2027, then 5%.
How much does a heat pump cost to run?
A heat pump turns one unit of electricity into roughly three units of heat. That is called its Seasonal Coefficient of Performance (SCOP).
For a typical three-bed home, running costs sit near £787 a year, roughly £14 a year more than a new A-rated gas boiler. Pair it with solar panels or a heat pump tariff and costs drop further.
Real example: a Bexleyheath semi
A three-bed 1930s semi near Broadway had an ageing gas combi boiler. Our survey showed three radiators needed upsizing. We fitted an 8kW unit and a 200-litre cylinder over three days.
After the grant, the owners paid around £4,800. They spread the cost using 0% APR finance over 12 months.
How to get an accurate heat pump quote
Every quote we issue is based on a survey of your own property, not a rule of thumb.
- Book a free survey — we check your home, EPC and heating system
- Get a heat-loss calculation — we size the unit room by room
- Review your quote — the £7,500 grant is already deducted
- Installation day — our own engineers fit it in 2-4 days
- Handover — we commission the system and show you the controls
Common questions
Is a heat pump cheaper than a new gas boiler in Bexleyheath?
Upfront, a boiler is usually cheaper. After the grant, the gap is much smaller. Running costs are now very similar.
Who qualifies for the £7,500 grant?
Most homeowners and landlords in England and Wales with a valid EPC. You must use an MCS-certified installer.
Do I need planning permission in Bexley?
Usually not. Most installs fall under permitted development. Homes in conservation areas, like parts of Old Bexley, may need extra checks.
Will I need new radiators?
Sometimes. Your heat-loss survey shows exactly which rooms need bigger radiators.
Do heat pumps work in cold weather?
Yes. Modern units work down to -20°C. They are sized for your coldest winter days.
Are heat pumps noisy?
Not really. Modern inverter units run at around 40dB. That is quieter than a fridge at three metres.
Can I pay monthly?
Yes. Cool Renewables offers 0% APR finance over 12 months, subject to status.
How long does installation take?
Most homes take two to four days on site.