Maine has the highest share of heating-oil homes in the U.S. (over 50%). With oil regularly above $4/gal, cold-climate heat pumps deliver the strongest savings in the state.
🔥 Size Your Heat Pump & See Your Annual Fuel Savings
Find the heat pump tonnage your home needs (heating + cooling load from area, climate, and insulation) and estimate annual fuel savings compared to your current Natural Gas, Propane, Heating Oil, or Electric Resistance system. Built on ACCA Manual J residential heating-load figures and real-world COP (Coefficient of Performance) values.
1. Home & climate parameters
These determine your home's heating load and the recommended heat pump tonnage. Sized using ACCA Manual J factors for an 8-ft ceiling home.
2. Your current heating fuel
Pick your current fuel and the rate your utility charges. The annual bill is optional: leave it blank to use the modeled estimate from your home size and climate above, or enter your real 12-month total to calibrate the estimate to your actual home. Defaults are US national averages.
3. Heat pump efficiency & electricity rate
Cold-climate heat pumps maintain high COP down to -15°C / 5°F and qualify for higher rebates (IRA 25C, Canada GREA). Standard inverter heat pumps are cheaper upfront but lose efficiency below 0°C / 32°F.
✓Recommended system & savings
📊Compare every fuel (with your settings)
Same home, same climate, same heating load — but using the default rate for each fuel. Best row = lowest annual heat-pump bill after switching from that fuel.
| Current fuel | Default rate | Annual HP bill | Net savings |
|---|---|---|---|
| Natural Gas Furnace | $1.20 / therm | — | — |
| Propane (LPG) | $3.50 / gallon | — | — |
| Heating Oil | $4.50 / gallon | — | — |
| Electric Resistance | $0.15 / kWh | — | — |
📤Save & share
Heat Pump vs Heating Oil in Maine: What You Could Save
At Maine’s typical heating oil price of about $4.40/gallon and an electricity rate near 29¢/kWh, here’s how the annual heating cost compares for a representative Maine home (~65 MMBTU/yr heating load, cold-climate heat pump at COP 3.8). Use the calculator above with your home size and real bill for an exact figure.
| Heating system | Estimated annual cost |
|---|---|
| Heating Oil furnace (~587 gallons/yr @ $4.40) | ~$2,581/yr |
| Cold-climate heat pump (~5,013 kWh/yr @ 29¢) | ~$1,434/yr |
| Estimated annual saving | ~$1,147/yr |
Figures are illustrative and depend on your home’s insulation, size, and actual usage — the interactive calculator personalizes all of this.
Cold-Climate Heat Pump Performance in Maine
The old myth that “heat pumps don’t work in the cold” no longer holds. Modern cold-climate air-source heat pumps (ccASHPs) are rated to deliver their full heating output down to -13°F / -25°C and keep producing usable heat below that, thanks to variable-speed inverter compressors and enhanced-vapor-injection technology. In Maine’s climate (Portland and colder inland areas), the standard approach is to size the heat pump to carry 80–90% of the heating season and keep your existing heating oil system as automatic backup for the few deepest-cold nights — capturing nearly all the savings while keeping a safety margin.
Rebates & Incentives for Maine Homeowners
Efficiency Maine offers some of the most generous heat pump rebates in the country — up to $8,000 for a whole-home cold-climate system for income-eligible households, plus the federal 25C tax credit (30%, up to $2,000/yr).
Because heat pumps also provide efficient air conditioning in summer, many Maine homeowners effectively get whole-home cooling as a free bonus when they switch for heating savings.
Frequently Asked Questions — Maine
How much can a Maine homeowner save switching from oil to a heat pump? A typical Maine home burning 500–800 gallons of oil a year saves roughly $900–$1,600 annually after switching to a cold-climate heat pump — Maine’s high oil dependence and Efficiency Maine rebates make the payback among the fastest in the US.
Do cold-climate heat pumps work well in northern Maine winters? Yes. Modern cold-climate (ccASHP) units are rated to deliver full heat down to -13°F/-25°C and keep running (at reduced output) below that. Most Maine homes keep the oil boiler as backup for the coldest snaps while the heat pump carries 80–90% of the season.
What Maine or Efficiency Maine rebates are available for heat pumps? Efficiency Maine rebates (up to $8,000 income-based, commonly $1,200–$2,400 standard) stack with the federal 25C tax credit. Check Efficiency Maine’s current heat pump program for your town and utility.
Background: how the refrigeration cycle moves heat.
Estimates vary by contractor. Compare free quotes from licensed local pros before you commit. Request a quote →
High-efficiency systems may qualify for utility rebates and federal or state incentives. Find current programs at ENERGY STAR & DSIRE.
Figures are reviewed by the Refcon HVAC engineering team using U.S. DOE, ENERGY STAR & ACCA Manual J data. Estimates only — confirm with a licensed pro.