Worcester Bosch Air Source Heat Pump
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 air source heat pump price UK (2026)
The Boiler Upgrade Scheme takes £7,500 off in England and Wales (£9,000 for off-gas homes replacing oil or LPG heating, until 31 March 2027); your MCS-certified installer claims it for you. Scotland uses the Home Energy Scotland grant and loan instead; Northern Ireland has no equivalent. 0% VAT until 31 March 2027 is already reflected. Smallest model: Compress 5800i AW 7kW from £9,000 pre-grant. Largest: Compress 5800i AW 7kW up to £13,500. Running cost estimated at ~10,000 kWh of heat a year and 26.32p/kWh electricity (October to December 2026 cap). Accurate as at October 2026.
Warranty: 2 years as standard; up to 7 years through the installer route, registered within 30 days of commissioning, with annual servicing.SCOP is the MCS-certified seasonal efficiency; sound power is the maker's declared ErP figure, the like-for-like noise measure (what you hear next door depends on distance and siting). Prices are indicative; confirm with your MCS-certified installer.
Available Models
Compress 5800i AW 7kW
Specifications from the makers' datasheets and the MCS product directory, checked October 2026; prices are indicative. Running costs: Estimate for 10,000 kWh of heat a year at 26.32p per kWh (Ofgem price cap, October to December 2026), at a 45°C design flow temperature: the midpoint of the certified 35°C and 55°C SCOPs. Post-grant figures illustrate the £7,500 Boiler Upgrade Scheme in England and Wales. Confirm current models and exact pricing with your MCS-certified installer.
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
Worcester Bosch pricing and grants in your region
The hardware is the same everywhere; the support is not. England and Wales use the £7,500 Boiler Upgrade Scheme, Scotland the Home Energy Scotland grant and loan, and Northern Ireland currently has no grant. Each regional guide covers exactly what applies.
Worcester Bosch air source heat pump FAQ
How much is a Worcester Bosch air source heat pump installed in the UK (2026)?
A Worcester Bosch air source heat pump costs £9,000 - £14,000 fully installed in the UK before any support (indicative, June 2026, with 0% VAT already applied). After the £7,500 Boiler Upgrade Scheme grant in England and Wales, that is illustratively £1,500 - £6,500 out of pocket. The smallest model (Compress 5800i AW 7kW) starts around £9,000 pre-grant; the largest (Compress 5800i AW 7kW) tops out around £13,500. Combi-to-cylinder conversions and radiator upgrades add to these figures, so always confirm with a written quote.
Is a Worcester Bosch heat pump eligible for the £7,500 grant?
Yes. Every air-to-water unit on this page qualifies for the Boiler Upgrade Scheme in England and Wales when it is fitted by an MCS-certified installer, who applies for the grant on your behalf so it comes straight off the quote. Off-gas homes replacing oil or LPG heating can claim £9,000 instead, until 31 March 2027. Scotland uses the Home Energy Scotland grant and loan instead; Northern Ireland currently has no equivalent scheme. Grant details accurate as at October 2026.
Is Worcester Bosch a good air source heat pump brand?
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 is best suited to homes where noise matters most, or worcester boiler owners staying with the brand.
What is the warranty on a Worcester Bosch heat pump?
2 years as standard; up to 7 years through the installer route, registered within 30 days of commissioning, with annual servicing. Workmanship cover for the installation itself comes separately from your installer. Most extended terms depend on registering the product and annual servicing, so keep your installation paperwork and MCS certificate.
How efficient is a Worcester Bosch air source heat pump?
The Compress 5800i AW 7kW has an MCS-certified SCOP (seasonal coefficient of performance) of 4.54 at 35°C flow and 3.29 at 55°C, so over a heating season each 1 kWh of electricity delivers about 3.29 to 4.54 kWh of heat, depending on how hot your system runs. At a 45°C design flow and the Ofgem cap rate (26.32p/kWh), 10,000 kWh of heat costs an estimated £670 a year, against roughly £890 for a 90%-efficient gas boiler at the current cap gas rate (7.97p/kWh from 1 October 2026). Estimates, not quotes; heat pump time-of-use tariffs can do better.
How long does a Worcester Bosch heat pump last?
With an annual service, heat pumps are generally expected to run well beyond their warranty period (Worcester Bosch: 2 years, up to 7 with conditions). Longevity depends on correct sizing (the MCS heat-loss survey), sensible siting and regular servicing. Confirm design life and extended-warranty options for your specific model with your MCS-certified installer.
Worcester Bosch vs other brands: which should I pick?
Worcester Bosch sits at the mid-range end of the UK market on pre-grant pricing. It comes from a maker selling heat pumps in the UK since 2006, and the Compress 5800i AW has a declared sound power of 42 dB(A). See the side-by-side comparisons below for direct head-to-head specs.
Worcester Bosch vs other heat pump brands
Heat pump guides
- Air source heat pump installation cost in the UK
- The best air source heat pumps in the UK, compared
- The £7,500 Boiler Upgrade Scheme, explained
- Air source heat pumps: costs, grants and brands
- Heat pump grants in London
- Heat pump grants in South East England
- Heat pump grants in South West England
- Heat pump grants in East of England
- Heat pump grants in East Midlands
- Heat pump grants in West Midlands
- Heat pump grants in Yorkshire and the Humber
- Heat pump grants in North West England
- Heat pump grants in North East England
- Heat pump grants in Scotland
- Heat pump grants in Wales
- Heat pump grants in Northern Ireland
Other heat pump brands
Where are you?
See indicative costs and local installers for your area