The cost of installing a heat pump varies depending on the type of unit, its size, and the complexity of the installation. However, most homeowners can expect to pay between $7,000 up to $20,000 for a complete heat pump purchase & installation. If you have an existing heating and cooling system, the cost may be lower since the necessary ductwork and piping may already be in place. Investing in a heat pump is a wise choice for energy savings, making it a valuable addition to your home.