Heat Pump Costs in St Asaph (LL17)

Average air source heat pump installation cost, running costs, and savings for the LL17 postcode district.

Installation Cost

Air Source Heat Pump

£9,459

£1,959

After £7,500 BUS grant

Ground Source Heat Pump

£22,845

£15,345

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

Heat Pump £1,254/yr

Gas Boiler £1,146/yr

Oil Boiler £1,493/yr

LPG Boiler £1,767/yr

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	£1,146	£1,254	-£108/yr
Heating Oil	£1,493	£1,254	£239/yr
LPG	£1,767	£1,254	£513/yr

Running costs assume standard electricity tariff (24.5p/kWh). Off-peak tariffs (7-10p/kWh) improve heat pump savings significantly.

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Honest about gas comparison

At standard electricity rates (24.5p/kWh), a heat pump in LL17 may cost around £108 more per year to run than a gas boiler. However:

Off-peak tariffs (Octopus Cosy at 7.5p/kWh) make heat pumps cheaper than gas
Gas prices are volatile — heat pumps protect against future price rises
Heat pump lifespan (20+ years) vs gas boiler (12-15 years) saves on replacements
If you're on oil or LPG, you'll save £239-513/year

Insulating first reduces heating demand, tipping the balance in favour of heat pumps.

✓

Great fit

Heat pump suitability for this area

Off-Gas Grid

39% of homes

Ideal for heat pumps

Avg EPC Rating

65 (Band D)

COP Estimate

3.1

Typical for this area

Typical Property

Detached

Noise Concern

Low concern

39% of properties in LL17 are off the mains gas grid. For homes on oil or LPG, a heat pump is an ideal replacement — saving £239-513/year on heating. The BUS grant covers most of the installation cost.

£7,500

BUS Grant in LL17

£9,459

Avg ASHP Cost

3.1

COP Efficiency

MCS

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Frequently Asked Questions

How much does an air source heat pump cost in St Asaph?

The average air source heat pump installation in St Asaph (LL17) costs £9,459. After the £7,500 BUS grant, the effective cost is £1,959.

Is my home in LL17 eligible for the BUS grant?

Most existing properties in LL17 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 St Asaph?

Honestly, if you're on mains gas with standard electricity tariffs, a heat pump may cost around £108/year MORE to run in St Asaph. However, if you're on oil (save £239/year) or LPG (save £513/year), a heat pump will definitely save money. Off-peak electricity tariffs also change the equation significantly.

What is the COP of a heat pump in St Asaph?

The estimated Coefficient of Performance (COP) for heat pumps in St Asaph is 3.1. This means for every 1 kWh of electricity used, the heat pump produces 3.1 kWh of heat. This is typical for this part of the UK.

Do I need to insulate my home before getting a heat pump in LL17?

Most homes in LL17 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.