The Complete Heat Pump Guide

Air-Source Heat Pumps (ASHP): Extract heat from outdoor air. By far the most common residential type. Modern cold-climate ASHPs (CCASHP) maintain efficiency ratings above 100% at temperatures as low as -13°F. Installation cost: $5,000–$12,000 for a full system replacement.

Ground-Source (Geothermal) Heat Pumps: Extract heat from the ground via buried loops. More consistent efficiency because ground temperature is stable year-round (50–60°F at 6-10 feet depth). Higher installation cost ($15,000–$30,000+) due to ground loop installation, but lower operating costs. Best suited for new construction or properties with available yard space.

Earlier heat pump models struggled in cold weather, losing efficiency rapidly below 30°F. Modern cold-climate heat pumps (CCASHP, designated under the NEEP Cold Climate specification) maintain full heating capacity down to 5°F and provide meaningful heating output down to -13°F.

Brands with proven cold-climate performance include Mitsubishi Hyper-Heat, Bosch IDS, Daikin Aurora, and Carrier Greenspeed. If you live in a climate that regularly sees sub-20°F temperatures, verify HSPF2 ratings specifically at low ambient temperatures (usually listed as COP at 5°F or 17°F in specs).

A dual-fuel system pairs an air-source heat pump with a gas furnace backup. The heat pump handles all heating when temperatures are above the switchover point (typically 30–40°F, which can be adjusted). Below that, the gas furnace takes over.

Dual-fuel systems offer the best of both worlds for cold climates: heat pump efficiency for 80–90% of heating hours, gas furnace reliability during extreme cold events. They also make sense for homeowners who want to electrify but are not ready to fully commit to an all-electric system, or in areas with high electricity rates during peak demand.

The Inflation Reduction Act (IRA) provides a 30% federal tax credit on qualifying heat pump installations, up to $2,000 per year. This credit resets annually, so homeowners who install a heat pump in 2025 and a heat pump water heater in 2026 can claim the credit in both years.

To qualify: The heat pump must meet ENERGY STAR Most Efficient criteria or equivalent efficiency thresholds. The credit is nonrefundable — it reduces your tax liability, but cannot result in a refund. Claim on IRS Form 5695.

Some states and utilities offer additional rebates on top of the federal credit. Check the Database of State Incentives for Renewables & Efficiency (DSIRE) at dsireusa.org for your state.

Central ducted heat pumps replace existing central AC/furnace systems and use your home's existing ductwork. Best for whole-home conditioning in homes with existing ducts in good condition.

Mini-split heat pumps (ductless) install an outdoor unit connected by refrigerant lines to one or more indoor air handlers mounted on walls or ceilings. No ductwork required. Ideal for home additions, older homes without ducts, sunrooms, garages, or for adding conditioning to a specific zone without extending existing ductwork.