Heat pumps are likely to be found in many more houses over the next few years. Here’s a guide to exactly what heat pumps are, whether heat pumps are cheaper than gas heating and whether heat pumps are greener than gas heating.

A heat pump is an appliance that transfers heat from one environment to another environment creating a temperature difference in the process. In a home, heat pumps work to transfer heat between the outside of the house and the inside of the house.

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