Heat pump vs. furnace: what to compare before replacing your heating

US & Canada · Cost examples use USD unless explicitly labeled CAD.

Understand what you are comparing

An air-source heat pump moves heat between indoors and outdoors and can provide heating and cooling. A fuel-burning furnace creates heat through combustion. ENERGY STAR explains that heat pumps transfer heat rather than generating it by burning fuel. That efficiency advantage does not by itself tell you which system produces the lowest bill in your location.

A replacement decision also includes comfort, cooling needs, electrical capacity, existing ducts and the condition of the current equipment. Start with the problem: a failed system, uneven temperatures, expensive operation or a planned renovation.

Get a proposal for your actual home

Ask the installer how heating and cooling needs were assessed. A recommendation based only on the old equipment’s size may carry old sizing problems into the new system. Discuss insulation, drafts, room use and any areas that remain uncomfortable.

Request the proposed equipment model numbers and an explanation of performance at your local winter design conditions. For a heat pump, ask whether backup heat is needed and how it will be controlled. For a furnace, ask what venting and other installation changes are included.

For Canadian homes and colder US regions, ask for performance at the local winter design temperature, not just a general efficiency claim. Natural Resources Canada provides heating and cooling guidance for Canadian installations. Climate varies within each country, so choose for your location rather than a national label.

Compare total installed prices

Include equipment, labor, permits where applicable, duct modifications, electrical work, controls and removal. Ask which items are firm prices and which are allowances. A low equipment-only price cannot be compared fairly with a complete installation.

If a rebate is mentioned, verify current eligibility directly with the program before treating it as money received. Availability can depend on location, equipment, installation date and other conditions. Keep the full price visible in your budget until the incentive is confirmed.

Ask for the assumptions behind running costs

A useful estimate explains local fuel and electricity prices, expected demand, system performance and backup heating. Ask the contractor to show those inputs. An annual savings figure without assumptions is difficult to evaluate.

Work through more than one scenario. What happens if electricity costs rise? What if the winter is colder or backup heat operates more often than expected? You do not need a perfect forecast. You need to know whether the decision depends on an unusually optimistic estimate.

Use comfort and serviceability as decision factors

Ask about noise, thermostat compatibility, filter access, maintenance and local service support. Find out who handles warranty labor and whether registration is required. A system that looks attractive on paper still needs a competent installation and accessible service.

If your current system works, getting proposals before an emergency gives you more time to compare them. If it has failed, focus on a safe temporary arrangement and a documented recommendation. Do not improvise fuel-burning heating or installation work to bridge the gap.