HOTJET Heat Pumps — Czech Manufacturer Since 2006
Air → Water
Easiest installation. Extracts heat from outdoor air, heats water inside.
Lower acquisition costs
Easy installation
Flexible placement
Efficient operation in moderate climates
Ground → Water
Stable output all year round. Ground collector or borehole — underground temperature stays constant.
High efficiency
Low running costs
Long lifespan
Independent of outdoor conditions
Water → Water
Highest efficiency (COP up to 6.4). Requires a well or water source.
Highest efficiency (COP up to 6.4)
Lowest running costs
Stable output year-round
Ideal where a water source is available
Direct from the manufacturer 
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28,000+ heat pumps From the world of heat pumps
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Hybrid systems – the best of both worlds
The Hotjet heat pump as the primary heat source, the boiler as a secondary backup. The controller dynamically switches between sources based on efficiency and energy prices – automatically and without user intervention.
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Open Day – February 20, 2026 from 3 PM
We are celebrating 20 years. Join us for an Open Day – factory tour, expert lecture, and free refreshments. Friday, February 20, 2026 from 3 PM.
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Behind the Scenes: How the Future of Heating Is Made in Czechia with HOTJET ZETXp Heat Pumps
How did the HOTJET R&D team develop the new ZETXp heat pump range with R290 refrigerant? From early prototypes and evaporator tuning to certification.
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