Worcester Bosch Air Source Heat Pump Cost in South West England

By PumpSwap EditorialLast reviewed 7 October 2026How we research

£9,000 to £14,000 installed before the grant, or £1,500 to £6,500 after a £7,500 grant.

Prices are PumpSwap's indicative figures for Worcester Bosch, not quotes. Boiler Upgrade Scheme grant (£9,000 for off-gas homes on oil or LPG).

Worcester Bosch, the Bosch-owned heating maker based in Worcester, has sold heat pumps in the UK since 2006 through its accredited installers. Its Compress 5800i AW uses natural R290 refrigerant, reaches 75°C flow and has a declared sound power of 42 dB(A) for the 7 kW model.

Worcester Bosch models and running costs in South West England

Running costs for 10,000 kWh of heat a year at 26.58p per kWh (Ofgem price cap for South Western England, 1 October to 31 December 2026), at a 45°C design flow temperature: the midpoint of each model's MCS-certified 35°C and 55°C SCOPs.

Model	Size	SCOP 35°C / 55°C	Installed, before grant	Running cost a year
Compress 5800i AW 7kW 3 bed homes	7 kW	4.54 / 3.29	£9,000 to £13,500	£680

Pros

Declared sound power of 42 dB(A) for the 7 kW
Natural R290 refrigerant, up to 75°C flow
Selling heat pumps in the UK since 2006

Cons

Standard warranty is 2 years; 7 needs registration and annual servicing
Heavy for a 7 kW unit (143 kg)

Best for: Homes where noise matters most, or Worcester boiler owners staying with the brand. Warranty: 2 years, up to 7 with conditions.

What South West England means for your heat pump

Climate. January averages 7.8°C by day and 2.3°C at night, with 37 days of air frost a year (Met Office 1991-2020; UK 1.2°C and 53 days). The heat loss survey sizes the unit for your local design temperature.
Gas grid. 24% of homes here are off the gas grid (2024 estimate; Great Britain 16%). Homes on oil or LPG with no mains gas can claim £9,000 until 31 March 2027.
Grant. Boiler Upgrade Scheme grant (£9,000 for off-gas homes on oil or LPG).

Full detail for the region, including planning rules and running costs against gas: air source heat pump cost in South West England.

Worcester Bosch prices in towns across South West England

Other brands in South West England

Worcester Bosch in other regions: London, South East England, East of England, East Midlands, West Midlands, Yorkshire and the Humber, North West England, North East England, Scotland, Wales, Northern Ireland.

Frequently asked questions

How much does a Worcester Bosch heat pump cost in South West England?

£9,000 to £14,000 installed before the grant, or £1,500 to £6,500 after a £7,500 grant. These are PumpSwap's indicative 2026 prices; your installer's survey sets the real figure.

Can I get the grant on a Worcester Bosch heat pump in South West England?

Yes, if your home qualifies: the Boiler Upgrade Scheme is not tied to a brand, as long as the installer is MCS-certified. It comes straight off the quote.

What would a Worcester Bosch heat pump cost to run in South West England?

Roughly £680 a year for the Compress 5800i AW 7kW to deliver 10,000 kWh of heat at 26.58p per kWh (Ofgem price cap for South Western England, 1 October to 31 December 2026). That assumes a 45°C design flow temperature, estimated from its MCS-certified SCOPs of 4.54 at 35°C and 3.29 at 55°C. A lower flow temperature, with bigger radiators or underfloor heating, costs less to run.

Who installs Worcester Bosch heat pumps in South West England?

MCS-certified installers across South West England fit Worcester Bosch. Ask for a heat loss survey and compare two or three quotes on the same basis: unit size, cylinder, radiator changes and warranty.

Heat pump guides for South West England

Prices, models, efficiency and warranties are indicative and change; confirm with your MCS-certified installer. Climate: Met Office 1991-2020 averages. Energy prices: Ofgem price cap for South Western England, 1 October to 31 December 2026.

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