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Baxi
British brand with the UK's widest engineer network
BUS Grant: £7,500BUS EligibleMCS Approved
7.7
Overall score
out of 10
Baxi is a solid choice for UK homeowners. From UK, founded 1866. Heat output range: 5 kW - 12 kW. SCOP: Up to 3.9. Noise: 40-52 dB.
Key specifications
OriginUK
Founded1866
Heat output5 kW - 12 kW
Max SCOPUp to 3.9
Noise level40-52 dB
Warranty5 years
Score breakdown
Efficiency (SCOP)
7.8
Reliability
7.8
Installation
9
After-sales support
8.8
Value for money
8.5
Post-grant installed price
£3,500 - £7,500
After £7,500 BUS grant. Competitive UK pricing.
+Pros
- 156 years of UK heating experience
- Extensive UK engineer and service network
- Competitive post-grant pricing
- Familiar brand for existing Baxi boiler owners
- Strong parts availability across the UK
-Cons
- SCOP ratings lower than Japanese or premium German brands
- Heat pump range less mature than boiler range
- Limited output range (max 12 kW)
Best for
Existing Baxi customersBuyers wanting widest UK coverageSmaller properties (2-3 bed)
Not ideal for
Maximum efficiency seekersLarge properties needing 14 kW+
Top models
| Model | Heat output | SCOP | Approx. installed price |
|---|---|---|---|
| Assure ASH 5kW | 5 kW | 3.9 | £4,000-6,000 installed |
| Assure ASH 8kW | 8 kW | 3.8 | £5,500-7,500 installed |
| Assure ASH 12kW | 12 kW | 3.6 | £7,000-9,500 installed |
Prices shown include installation and are after the £7,500 BUS grant where applicable. Correct as of April 2026.
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Important disclaimer
www.heatpumpcompared.co.uk is editorially independent and not affiliated with any heat pump manufacturer or installer. We do not provide heating advice. Prices, specifications, SCOP ratings and grant amounts are correct as of April 2026 but are subject to change. Always commission a professional heat loss survey before purchasing a heat pump system.