V
Vaillant
Germany's most trusted heating brand
BUS Grant: £7,500BUS EligibleMCS Approved
8.8
Overall score
out of 10
Vaillant is a excellent choice for UK homeowners. From Germany, founded 1874. Heat output range: 3 kW - 12 kW. SCOP: Up to 4.2. Noise: 37-43 dB.
Key specifications
OriginGermany
Founded1874
Heat output3 kW - 12 kW
Max SCOPUp to 4.2
Noise level37-43 dB
Warranty5 years (parts and labour)
Score breakdown
Efficiency (SCOP)
8.5
Reliability
9
Installation
8.5
After-sales support
8.5
Value for money
7.8
Post-grant installed price
£4,500 - £9,000
After £7,500 BUS grant. Includes installation.
+Pros
- 150-year German engineering heritage
- Excellent cold weather performance
- Strong UK installer network
- Quiet operation
- Comprehensive aftercare
-Cons
- Premium pricing - one of the most expensive brands
- Limited DIY-friendly controls
- Some models require proprietary installer setup
Best for
Large homesBuyers prioritising reliabilityOff-gas-grid properties
Not ideal for
Budget-conscious buyersSmall flats or apartments
Top models
| Model | Heat output | SCOP | Approx. installed price |
|---|---|---|---|
| aroTHERM plus 5kW | 5 kW | 4.2 | £5,500-7,000 installed |
| aroTHERM plus 7kW | 7 kW | 4.1 | £6,500-9,000 installed |
| aroTHERM plus 12kW | 12 kW | 3.9 | £8,000-12,000 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
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.