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Dual-Fuel Switchover Calculator

Heat pump vs gas cost per delivered MMBtu.

Inputs

Inputs and assumptions

All-in cents per kWh.

Heat pump COP at the candidate switchover outdoor temp (check the NEEP cold-climate table or spec sheet at 17 F and 5 F).

From the gas bill.

Backup furnace efficiency.

Result

Gas advantage (+ means switch)
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Gas ($/MMBtu)
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Heat pump ($/MMBtu)
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What to check

  • Cold-weather heat pump COP
  • Gas price and backup AFUE

Related calculators

Screening estimate only. Verify duct measurements, nameplate ratings, and installer quotes before making a decision.

Saved calculations

Keep the assumptions with the result.

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