Power demand
Building heat demand

Estimate heating demand from building geometry and climate zone.

Estimated heat demand: — kW
Used as the power demand. Switch to “Enter manually” above to type your own value.
Input data
Parameters outside the standard range

The entered values are outside our standard selection range. Contact us and we will size the unit for you.

office@aerock.eu +48 666 061 866 Opening hours: Mon. - Fri. 7:00 - 15:00
Hydronic air heater schematic

Air flows through the finned heat exchanger, through which water/glycol circulates. Values follow your inputs and the selected model.

Air flow per model
m³/h
m³/h
m³/h
m³/h
m³/h
m³/h
How it works

Air flows across the finned coil (ta1 → ta2). Water/glycol flows in counterflow (tw1 → tw2). The tw1−tw2 difference sets the medium flow; pressure drop and medium flow size the pump.

Number of units

Units = heat demand ÷ single-unit power, rounded up. The recommended model covers the demand with the fewest units, an acceptable pressure drop and no warnings.