Winter Heating Cost Calculator (embed)

Prefilled with EIA's national last-winter averages for gas, propane, heating oil, electricity; the second preset switches to the forecast. Per-unit rates only; leave out the fixed monthly charge.

Natural gas price — dollars per therm Propane price — dollars per gallon, delivered Heating oil price — dollars per gallon, No. 2 Electricity price (cents per kWh) — marginal rate only

Advanced — efficiencies, gas unit, COP, seasonal load

Your gas bill quotes Gas furnace AFUE (%) — 80% atmospheric, 95% condensing Propane furnace AFUE (%) Oil boiler AFUE (%) — typically 80-90% Heat pump rating point — NEEP 3-ton median Heat pump COP Delivered heat for the season (MMBtu) — your own estimate; scales the ranking into dollars

Cheapest heat here: — per MMBtu delivered

—

Cost per million Btu delivered. Fuels: 10 × therm-equivalent price ÷ AFUE. Electricity: 293.07 × $/kWh ÷ COP, resistance fixed at COP 1.00. Marginal unit prices only. Estimate, not a quote.

What changes if… Electricity price ×1.00 Delivered fuel price (propane, oil) ×1.00 Natural gas price ×1.00

Sliders scale the prefilled prices to test sensitivity; the numeric fields stay the precise inputs. Presets: