HeatPumpHeat Pump Costs in Lewes (BN7)
Average air source heat pump installation cost, running costs, and savings for the BN7 postcode district.
Installation Cost
Air Source Heat Pump
£11,136
£3,636
After £7,500 BUS grant
Ground Source Heat Pump
£23,810
£16,310
After £7,500 BUS grant
Costs are area averages and vary by property size, insulation level, and installer. See full cost breakdown.
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Annual Running Cost Comparison
Based on standard electricity rate (24.5p/kWh). Off-peak tariffs reduce heat pump costs significantly. See tariff comparison.
Annual Savings vs Current Heating
| Current Fuel | Annual Cost | Heat Pump Cost | Annual Saving |
|---|---|---|---|
| Mains Gas | £939 | £911 | £28/yr |
| Heating Oil | £1,224 | £911 | £313/yr |
| LPG | £1,449 | £911 | £538/yr |
Running costs assume standard electricity tariff (24.5p/kWh). Off-peak tariffs (7-10p/kWh) improve heat pump savings significantly.
Good with insulation
Heat pump suitability for this area
Off-Gas Grid
5% of homes
Avg EPC Rating
65 (Band D)
COP Estimate
3.5
Above UK average
Typical Property
Terraced
Noise Concern
Moderate
Frequently Asked Questions
How much does an air source heat pump cost in Lewes?
The average air source heat pump installation in Lewes (BN7) costs £11,136. After the £7,500 BUS grant, the effective cost is £3,636.
Is my home in BN7 eligible for the BUS grant?
Most existing properties in BN7 are eligible for the £7,500 Boiler Upgrade Scheme grant. You need a valid EPC, an MCS-certified installer, and must not have received a previous BUS grant. New builds are excluded.
Will a heat pump save me money in Lewes?
If you're on mains gas, a heat pump could save around £28/year in Lewes. If you're on oil heating, savings are typically £313/year. Savings increase significantly on off-peak electricity tariffs like Octopus Cosy.
What is the COP of a heat pump in Lewes?
The estimated Coefficient of Performance (COP) for heat pumps in Lewes is 3.5. This means for every 1 kWh of electricity used, the heat pump produces 3.5 kWh of heat. This is above the UK average, thanks to the milder climate in this area.
Do I need to insulate my home before getting a heat pump in BN7?
Most homes in BN7 have reasonable insulation (average EPC score 65, band D). While improving insulation always helps, many properties here can proceed directly with a heat pump installation.
Nearby Postcodes
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