Brand news · May 27, 2026 · 1 min read

Daikin launches the high-temperature air-source heat pump ALTHERMA 3 H HT to replace boilers and furnaces

The system uses the low-GWP refrigerant R-32, flexible configurations, and advanced microprocessor controllers. Ideal for replacing fossil-fuel systems.

Daikin launches the high-temperature air-source heat pump ALTHERMA 3 H HT to replace boilers and furnaces

Daikin has introduced the high-temperature air-source heat pump ALTHERMA 3 H HT, offering a versatile plug-and-play solution for:

  • heating 🔥

  • cooling ❄️

  • optional domestic hot water 🚿

Even at low outdoor temperatures (down to -28). This adaptability makes the system an excellent option for replacing fossil-fuel equipment such as boilers, furnaces and gas water heaters.

The compressor, developed at Daikin’s Japanese Technology and Innovation Center together with Daikin Europe, can deliver a leaving water temperature of up to 65 degrees. The system uses the low-global-warming-potential refrigerant R-32, which reduces CO2 emissions compared with R-410A.

Flexible equipment combinations make it easy to integrate the heat pump as a replacement for:

  • boilers

  • gas furnaces

  • optional gas domestic hot water

After connecting the outdoor unit ALTHERMA 3 H HT to the indoor hydromodule, the system can work with existing in-home heating emitters — radiators or convectors — as well as Daikin hydronic fan coils and underfloor heating systems.

Noise has been reduced to 41 dBA, and in low-noise mode it reaches 35 dBA thanks to a single large fan and Daikin inverter technology, which, together with the thermodynamic properties of R-32, delivers high energy efficiency.

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