Calculator
Heat pump sizing calculator
Recommended heat-pump power range from 4 basic building inputs.
Enter heated area, building type, insulation standard and climate zone. The calculator returns a recommended heat-pump power range in kW with a margin for DHW and reserve. This is preliminary sizing. To pick a specific pump model (from 239 units in the database) and run full calculations, use the HeatAlgo app.
Heat pump sizing calculator
Four basic building inputs and you see a recommended heat-pump power range. Preliminary estimate only, not a substitute for a design project.
How it works
- Enter 4 basic building inputs: heated area, building type, insulation standard and climate zone.
- The calculator estimates the building's heat loss using simplified coefficients, then sizes the pump with a 10-20% margin (DHW, bivalent reserve).
- You get a recommended pump power range in kW along with the basis of the estimate (building heat loss in kW).
- To pick a specific pump model, run operational cost analysis or prepare a full installation project, use the HeatAlgo app.