Which Is More Efficient, a Heat Pump or a Gas Furnace?

The short answer

There is no single, quick answer. The variables include how long the system runs, the cost per kilowatt hour of electricity, the cost per therm of gas, the furnace efficiency, and the HSPF of the heat pump. The only accurate way to settle it is to apply these factors to your local conditions. A local licensed contractor can model the numbers for your area, and it is fine to ask questions, since some contractors lean one way for reasons unrelated to operating cost or comfort.

How climate changes the answer

As a broad generalization, in much of the country an 80 percent furnace will use about the same amount of energy as a heat pump when run time and climate are comparable. In colder climates, natural gas is usually the better choice if it is available, because a heat pump works harder as outdoor temperatures fall. In milder climates, a heat pump often heats and cools efficiently from one system.

Reading the efficiency ratings

Two ratings drive the comparison. They measure different equipment, so use each correctly.

How AC Direct helps

AC Direct ships complete gas furnaces and heat pumps factory direct across a wide efficiency range, so you can match the equipment to your climate and fuel costs. Every order includes free technical support and installation guides, and the AC Direct Price Promise keeps your equipment cost low while you compare options. Installation is handled by a local licensed contractor.