Vi

Viessmann

German engineering excellence since 1917

BUS Grant: £7,500BUS EligibleMCS Approved
8.7
Overall score
out of 10

Viessmann is a excellent choice for UK homeowners. From Germany, founded 1917. Heat output range: 6 kW - 13 kW. SCOP: Up to 4.4. Noise: 40-50 dB.

Key specifications

OriginGermany
Founded1917
Heat output6 kW - 13 kW
Max SCOPUp to 4.4
Noise level40-50 dB
Warranty5 years

Score breakdown

Efficiency (SCOP)
8.8
Reliability
8.9
Installation
7.8
After-sales support
8
Value for money
7.5
Post-grant installed price
£5,000 - £10,000
After £7,500 BUS grant. Premium German specification.
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+Pros

  • Over 100 years of German heating engineering heritage
  • Vitocal range achieves SCOP up to 4.4
  • Excellent cold-climate performance
  • Seamless integration with existing Viessmann systems
  • Vitotronic intelligent controls

-Cons

  • Premium pricing — among the most expensive brands
  • Requires specialist Viessmann-trained installers
  • Smaller UK installer network than Mitsubishi or Worcester Bosch

Best for

Premium retrofit projectsWell-insulated homesExisting Viessmann system owners

Not ideal for

Budget-conscious buyersUrgently needed installs

Top models

ModelHeat outputSCOPApprox. installed price
Vitocal 200-A 6kW6 kW4.4£5,500-8,000 installed
Vitocal 200-A 8kW8 kW4.3£7,000-9,500 installed
Vitocal 200-A 13kW13 kW4.1£9,000-13,000 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

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.