## Geothermal Heat Pumps

Photo taken during the installation of a ground source heat pump.

## Introduction

A heat pump can be an efficient alternative to the standard home heating system. Moreover, during the cooling season, its function can be reversed as it acts as an air conditioner. Heating and cooling buildings using ground source heat pumps (also known as geothermal heat pumps) is becoming more popular.

## The Basics

To understand how a heat pump works, think for a moment about a refrigerator. This appliance …