Heating cost calculator for New Hampshire homes

Enter how much fuel your house used last year and the prices you actually pay. The calculator works out the heat your house needed, then shows what delivering that same heat would cost with each fuel and system. Prices are pre-filled with typical southern New Hampshire figures; change them to match your bills.

Fuel heat contents: oil 138,500 BTU per gallon, propane 91,333, natural gas 100,000 per therm, electricity 3,412 per kWh, pellets 16.5 million per ton, cordwood 20 million per cord. Default efficiencies: oil 82%, propane and gas 90%, electric baseboard 100%, pellets 80%, cordwood 65%, cold-climate heat pump COP 2.4. Your own figures override them. Prices are typical late-2026 southern New Hampshire figures for illustration; the New Hampshire Department of Energy publishes a weekly fuel price survey.

How to read the result

• The table compares the cost of the same delivered heat. It does not include equipment, installation or maintenance.
• Electricity prices in New Hampshire change with your supplier and community power program; use the number on your bill.
• A heat pump's real seasonal efficiency depends on the house and the equipment; 2.4 is a fair planning figure for a cold-climate unit in southern New Hampshire.
• Wood and pellets are cheap per BTU but cost time; a tighter house burns fewer cords either way.

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