HydroAir Hydronic Heat Pumps

Image of HydroAir hydronic heat pump
HydroAir hydronic heat pump

Consider HydroAir hydronic heat pumps for heating and cooling. They are available in 1-phase and 3-phase versions. They are very reliable and come with excellent warranties. 

High Temperature

HydroAir hydronic heat pumps can heat water to 75 degrees. Therefore, choose HydroAir heat pumps for heating your radiator panels with gas boiler changeovers.

Hydronic heat pumps extract heat from the air and transfer it to the circulating water. In winter, they find sufficient heat in the outside air, even if it is below zero.


In summer, they can cool. Hydronic cooling works best with chilled water through fan coil convectors. You can also use area cooling with cool water above the dew point with underfloor circuits. Area cooling works best when combined with ceiling fans.

Read more about hydronic cooling.

Inverter Technology

HydroAir heat pumps use inverter technology. This allows soft starting and variable compressor speed for optimal efficiency and longer life.

Natural Refrigerant

The natural R290 refrigerant propane is used. This has negligible global warming potential of just 3. Read more: heat pump refrigerants.

Thermal Battery

Run your hydronic heat pump system during the day with your solar power. This will give you low cost solar hydronic heating. Your winter heating or summer cooling will be absorbed by the internal thermal mass of your house then released into the evening. This acts as a thermal battery.

A structural slab provides a lot of useful thermal mass but it should be insulated to hold onto the energy stored during the day. Therefore, if you have a new build, make sure your slab is insulated underneath and around the edges during construction. Read more: slab insulation.

Choose a buffer tank for  your heat pump system. Oversize your buffer tank for greater thermal mass. Read more:

Image of HydroAir hydronic heat pump, 22kW
HydroAir hydronic heat pump, 22kW
Hydrosol image of Stiebel Eltron buffer tanks, 100 and 1500 litre buffer tanks, larger tanks can be used as a thermal battery.
Buffer tanks range from 100 to1500 litres