This is a “basic load calculation” guide and does not allow for features such as  conservatories, orangeries, chimney breasts, swimming pools etc which can cause a large heat loss. The details shown below are based on an ambient temperature of -5oC with a leaving water temperature of +45oC.

For a more detailed load calculation please contact one of our offices or speak with your Cool Designs representative.

Air to Water basic load calculator

Floor Area

Heating Required

Hot Water Tank Size