21.01.2026

How to modernize a heating system effectively?

Small buildings, big challenge: how to modernize a heating system effectively?

HEATER CONDENS water unit heaters are designed specifically for projects like these:

  • - Low supply temperatures – energy savings when used with heat pumps and condensing boilers
  • - Intelligent power modulation – EC motors adjust output to actual heating demand
  • - Compatibility with all heat sources – from heat pumps and condensing boilers to traditional coal-fired boilers
  • - Fast and easy installation – simple wall or ceiling mounting
  • - Wide output range – 10–120 kW for precise sizing across different building volumes
  • - Mobile app control – remote temperature control and adjustment via smartphone

Want to find out which model is right for your project?

- Use our selection app:
SONNIGER - Selection Software

Back
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Selection app
Speed up your work.
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Energy Savings in High-Ceiling Spaces
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Products available within 24 hours
Quick international shipping
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Choose a solution that combines thermal comfort, fresh air supply and energy savings in a single setup.
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GUARD PRO air curtains and APEN gas heaters
Available straight from the warehouse, within 24 hours!
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