A simple form for calculating heat savings yourself

The basics in the calculations are fairly simple, and the questions regarding them are common. Thus, I created this simple form to fill in some data. It delivers cost-saving calculation times by comparing the alternatives. The shown alternatives are

• Using an electric heater only
• Using an air/water heat pump
• Using a geothermal heat pump

The assumptions for the calculations are that the different heat pumps are enough to heat the house without an additional electric heater. Or if not, that the differences in cost from needing such additions are small enough to be neglected.

Simple input data

The below input data are to make a rough comparison. The average heat consumption is assumed to be the heat consumption needed for the heating and assumed to be fully replaced with the alternative heat pumps. It is important to think of it not as the electricity consumption, but as the necessary consumption for the heating. Thus, hot water is assumed not to be included, neither is household electricity.

Also, if the heating today is fully or partly produced by a heat pump or a non-electrical furnace, that has to be included in the calculations. Then their current production, if they are to be replaced, has to be translated to corresponding necessary heating kwh, and added to the assumed kwh need for heating the house.

Resulting pay-back time

Click "Calculate" above to see results.