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Take the testReplacing a heating system that uses fossil fuels (such as gas) with one that uses renewable energy can significantly reduce greenhouse gas emissions.
To find out more about the different heat pumps, their advantages and disadvantages, and to find out more about their costs, installation and maintenance, consult our guide.
For the moment, we consider that replacing kWh of gas with the same amount of kWh of electricity is a good first-order approximation. We can then adapt this to the performance of residential installations.
This action involves replacing both the air heating system and the domestic hot water system. We are assuming that the heat pump installed is an air-to-water heat pump, which also heats domestic hot water, but this is not necessarily the case.
To find out more about this rule in our model, run the calculation by clicking on the button below.