Heat pumps have become one of the hottest topics in home improvement — and with federal tax credits of up to $2,000, falling equipment prices, and cold-climate models that perform in sub-zero temperatures, they're worth serious consideration. But they're not right for every home. This guide breaks down the full cost comparison for cooling and heating, the efficiency numbers that actually matter, and which system wins for different home types and climates.
The most common mistake in this comparison is treating a heat pump as a replacement for just the air conditioner. In reality, a heat pump is a complete heating and cooling system. It cools your home in summer exactly like a central air conditioner, and it heats your home in winter by reversing the refrigeration cycle to extract heat from outdoor air and move it inside.
The correct comparisons are:
A standard air conditioner works by moving heat: it absorbs heat from indoor air using a refrigerant and expels it outside. An air-source heat pump does exactly the same thing in cooling mode — then in heating mode, it reverses the process, extracting heat from outdoor air (even at very cold temperatures) and moving it inside.
This is why heat pumps are so efficient for heating: they don't generate heat, they move heat. For every unit of electrical energy consumed, they move 2–4 units of heat energy — achieving a Coefficient of Performance (COP) of 2.0–4.0. By contrast, an electric resistance heater (baseboard, electric furnace, wall heater) converts electrical energy to heat at 100% efficiency — a COP of exactly 1.0. The heat pump is 2–4 times more efficient.
A gas furnace doesn't have a COP in the same sense, but a high-efficiency gas furnace converts about 95–98% of the gas's energy content to heat (AFUE 95–98%). Comparing a gas furnace to a heat pump requires knowing the local cost of electricity vs. natural gas — more on this below.
SEER2 (Seasonal Energy Efficiency Ratio 2, updated standard) measures cooling efficiency across a full season. Both heat pumps and central ACs are rated by SEER2. The higher the number, the more efficient. Minimum federal standards as of 2023: 14.3 SEER2 for the South/Southwest, 13.4 SEER2 elsewhere. Energy Star requires 15.2+ SEER2. Top performers reach 20–25+ SEER2.
A heat pump and central AC with the same SEER2 rating will have nearly identical cooling efficiency and costs — this is not where the systems differ. The difference is in heating.
HSPF2 (Heating Seasonal Performance Factor 2) measures heat pump heating efficiency across a full season. Minimum federal standard: 7.5 HSPF2. Energy Star: 8.1+ HSPF2. Top cold-climate units: 12–14 HSPF2. An HSPF2 of 10 means the heat pump delivers roughly 3 BTUs of heat per BTU of electricity consumed — or expressed as a seasonal COP of about 2.9.
AFUE (Annual Fuel Utilization Efficiency) measures what percentage of a gas furnace's fuel input is converted to useful heat. Standard models: 80% AFUE (20% of gas goes up the flue). High-efficiency models: 90–98% AFUE. Minimum federal standard: 80% AFUE (78% in northern states).
| System | Equipment | Installation | Total Cost | After 30% Tax Credit |
|---|---|---|---|---|
| Central AC only (16 SEER2, 3-ton) | $2,000–$4,000 | $1,500–$3,000 | $3,500–$7,000 | N/A (no credit for AC) |
| Gas furnace 95% AFUE (100k BTU) | $1,200–$2,800 | $800–$2,000 | $2,000–$4,800 | $1,400–$3,360 |
| AC + Gas furnace (combined) | — | — | $5,500–$11,800 | — |
| Ducted air-source heat pump (18 SEER2, HSPF2 10) | $2,500–$5,500 | $2,500–$5,000 | $5,000–$10,500 | $3,500–$7,350 |
| Mini-split heat pump (multi-zone, 3 zones) | $3,000–$7,000 | $3,000–$7,000 | $6,000–$14,000 | $4,200–$9,800 |
Tax credit note: Heat pumps qualify for 30% federal credit up to $2,000 through the 25C credit. High-efficiency gas furnaces qualify for up to $600. These amounts are shown post-credit in the table above.
Key finding: after the federal tax credit, a heat pump's total installation cost is comparable to, or lower than, the combined cost of a new AC + gas furnace. The heat pump is particularly competitive when both the furnace and AC need replacement at the same time.
This is where climate and fuel prices determine the winner. Operating costs depend on three key variables: your local electricity rate, your local gas/propane/oil price, and your climate (heating degree days).
Location: Atlanta, GA. Electricity rate: $0.14/kWh. Gas rate: $1.20/therm. Annual heating load: 15 MMBtu. Annual cooling load: 30 MMBtu.
| System | Annual Cooling Cost | Annual Heating Cost | Total Annual |
|---|---|---|---|
| Heat pump (18 SEER2 / HSPF2 10) | $560 | $215 | $775 |
| Central AC (16 SEER2) + gas furnace (96% AFUE) | $630 | $188 | $818 |
In Atlanta, the heat pump wins by about $43/year. Not a huge operating cost difference — the main benefit here is replacing two systems with one and the lower installed cost with the tax credit.
Location: Chicago, IL. Electricity rate: $0.17/kWh. Gas rate: $0.90/therm. Annual heating load: 60 MMBtu. Annual cooling load: 15 MMBtu.
| System | Annual Cooling Cost | Annual Heating Cost | Total Annual |
|---|---|---|---|
| Cold-climate heat pump (19 SEER2 / HSPF2 12) | $310 | $890 | $1,200 |
| Central AC (16 SEER2) + gas furnace (96% AFUE) | $350 | $563 | $913 |
In Chicago, where gas is cheap and winters are long, the gas furnace + AC system costs about $287/year less to operate. The heat pump's efficiency advantage is partially offset by the cost differential between natural gas and electricity in Illinois. However, as gas prices rise and electricity rates fall with more renewables on the grid, this balance shifts. Also important: gas prices are volatile (they spiked 3x in 2022); electricity prices are more stable.
If your current heating is electric baseboard, electric furnace, or electric wall heaters, a heat pump almost always saves substantial money in any climate:
Propane costs roughly $1.80–$3.00/gallon nationally in 2026; heating oil $3.00–$4.50/gallon. These fuels have high per-BTU costs compared to natural gas or electricity. Homes heating with propane or oil almost universally save money switching to a heat pump:
The biggest concern homeowners in cold climates have is: do heat pumps actually work in cold weather? The answer has changed dramatically in the past 5 years. Modern cold-climate air-source heat pumps maintain meaningful heating output at temperatures where conventional heat pumps struggled.
| Outdoor Temp | Standard Heat Pump (COP) | Cold-Climate HP (COP) | Electric Resistance (COP) |
|---|---|---|---|
| 47°F (9°C) | 3.5–4.0 | 4.0–5.0 | 1.0 |
| 17°F (-9°C) | 1.5–2.0 | 2.5–3.5 | 1.0 |
| 0°F (-18°C) | 0.5–1.0 (poor) | 1.5–2.5 | 1.0 |
| -15°F (-26°C) | Cannot heat | 1.0–1.5 | 1.0 |
Cold-climate heat pumps (Mitsubishi H2i, Bosch IDS, Daikin Fit, Carrier Infinity, and others) maintain significantly higher efficiency than standard heat pumps at low temperatures. Even at 0°F, they're 50–150% more efficient than electric resistance heating. The leading brands are rated to provide 100% of rated capacity down to 5°F and have minimum operating temperatures of -13° to -22°F.
For homes in very cold climates with existing gas infrastructure, a dual-fuel system pairs a heat pump with a gas furnace backup. The heat pump handles heating when outdoor temperatures are above 35–40°F (using cheaper electricity efficiently), and the gas furnace takes over below that temperature (using the fuel where gas wins cost-effectively). This system typically achieves the best operating economics in cold climates with cheap gas rates.
A dual-fuel system costs $8,000–$15,000 installed but qualifies for both the heat pump credit (up to $2,000) and potentially the gas furnace credit (up to $600), reducing the net cost substantially.
Central air conditioners receive no federal tax credit in 2026. Heat pumps that meet Energy Star Most Efficient criteria qualify for the Energy Efficient Home Improvement Credit (25C): 30% of installed cost, up to $2,000. This is in addition to — and does not count toward — the $1,200 annual cap that covers insulation, windows, and doors.
At a $10,000 installation cost, the $2,000 federal credit reduces net cost to $8,000. Combined with utility rebates ($200–$1,500 common for heat pump upgrades) and potential state rebates (up to $8,000 for income-qualified households under IRA Home Electrification and Appliance Rebates), the total incentives can be substantial.
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