HeatCost: Heating Cost Compare

HeatCost: Heating Cost Compare

Compare heating fuel costs

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$4.99

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Details

  • Released
  • Updated
  • August 6, 2026
  • September 20, 2026

Features

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About

HeatCost tells you which heating fuel actually costs the least — per unit of useful heat, not per gallon, liter or cord. Enter the price you pay for each fuel and your appliance's efficiency. HeatCost ranks every fuel by cost per delivered MMBTU (or GJ) and projects your annual heating cost, so firewood, pellets, propane, heating oil, natural gas, electric resistance and heat pumps are compared on equal terms. SEE THE PAYBACK OF SWITCHING Pick the heating you use today. HeatCost shows the yearly saving (or extra cost) of every alternative. Add the price of new equipment and you get the payback years at a glance. YOUR BILL'S UNITS Switch the purchase unit per fuel: gallons or liters, therms, CCF, m³ or kWh for gas, cords or m³ for firewood, tons, tonnes, kg or bags for pellets. Energy content and price are converted together, so the ranking never changes. DON'T KNOW YOUR HEAT DEMAND? Enter how much fuel you used last season and HeatCost converts it into annual delivered heat. FEATURES • Cost per delivered MMBTU or GJ for seven heating options, heat pump (COP) included • Live ranking — cheapest highlighted, current heating marked • Yearly saving vs. your current heating and payback years • Heat demand estimate from last season's fuel use • Editable energy content, efficiency and purchase unit per fuel • Backup and restore all your inputs as a JSON file • Metric or US units, any currency 100% offline. No ads. No tracking. No account. A one-time purchase.
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What's New in HeatCost

1.1

September 20, 2026

NEW • Heat pump is now its own fuel — enter its COP and compare it against electric resistance • Pick your current heating to see the yearly saving of every alternative, plus payback years when you add the equipment cost • Switch purchase units per fuel: gallons/liters, therm/CCF/m³/kWh, cord/m³, ton/tonne/kg/bag • Estimate your annual heat demand from last season's fuel use • Back up and restore your inputs as a JSON file FIXED • Opening the Fuels tab no longer rounds the stored energy content (e.g. 0.003412 MMBTU per kWh) • Edits are saved immediately when the app goes to the background • Clearer messages for turned-off fuels and invalid energy or efficiency values

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