Bosch
Trusted German brand expanding into heat pumps
Bosch is a solid choice for UK homeowners. From Germany, founded 1886. Heat output range: 5 kW - 17 kW. SCOP: Up to 4.2. Noise: 40-50 dB.
Key specifications
Score breakdown
+Pros
- Highly trusted German brand with global recognition
- Compress 3400i widely available through established dealer network
- Easy integration with Bosch smart home ecosystem
- Competitive installer availability across the UK
- Good parts availability and service support
-Cons
- SCOP ratings mid-tier — not as efficient as Daikin or Stiebel Eltron
- Heat pump range newer and less proven than boiler range
- Not all Bosch boiler engineers are heat pump trained
Best for
Not ideal for
Top models
| Model | Heat output | SCOP | Approx. installed price |
|---|---|---|---|
| Compress 3400i 5kW | 5 kW | 4.2 | £4,200-6,500 installed |
| Compress 3400i 8kW | 8 kW | 4.0 | £5,800-8,000 installed |
| Compress 3400i 17kW | 17 kW | 3.8 | £8,000-11,500 installed |
Prices shown include installation and are after the £7,500 BUS grant where applicable. Correct as of April 2026.
Bosch heat pump - common questions
Bosch is a globally trusted engineering brand and their Compress 3400i heat pump benefits from that heritage. The SCOP ratings are mid-tier (up to 4.2) rather than market-leading, but Bosch's strengths are their wide dealer network, competitive pricing, and strong parts availability. A solid choice for buyers who prioritise brand trust and dealer accessibility.
The Bosch Compress 3400i achieves SCOP up to 4.2 on smaller models. This is mid-tier compared to premium brands like Daikin (4.6) or Stiebel Eltron (4.5), but competitive against other volume brands like Samsung and Worcester Bosch.
Yes. Bosch Compress 3400i heat pumps are MCS-approved and eligible for the £7,500 BUS grant in England and Wales.
Yes. Bosch has a well-established UK dealer and installer network through their Bosch Thermotechnology division. While not as large as Worcester Bosch's network, Bosch certified heat pump installers are available across most of the UK.
Getting quotes for a Bosch heat pump?
Compare at least 3 quotes from MCS-certified installers in your area.
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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.