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Home Energy Calculators – Heating Cost Comparison
x402
Home Energy Calculators – Heating Cost Comparison is a paid API for AI agents from home-energy-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Calculates and ranks the cost per million BTU of delivered heat across resistance electric, heat pump, natural gas, propane, and heating oil systems based on user-provided fuel prices and efficiencies.
Price / call$0.02
Success—
StatusUnknown
How this service works
Cost per million BTU of delivered heat for resistance, heat pump, gas, propane and heating oil furnaces, from your prices.
Output
Returns a list of heating systems ranked from cheapest to most expensive by cost per million BTU, including each system's assumed efficiency, yearly cost (if annual heat load provided), relative cost compared to the cheapest option, notes, a plain-language summary, a verdict naming the winning system, and any disclaimers or caveats.
Example use cases
Deciding whether to switch to a heat pump
“I'm considering replacing my oil furnace with a heat pump. I pay $4.50 per gallon for heating oil and $0.14 per kWh for electricity. My furnace is 85% efficient and a heat pump would have a COP of 2.8. My home needs about 60 MMBtu of heat a year — can you compare the annual costs and tell me if switching makes financial sense?”
New home heating system selection
“I'm building a new home and trying to pick a heating system. I can get natural gas at $1.10 per therm, propane at $3.60 per gallon, or electricity at $0.12 per kWh. Assume standard efficiencies and a 75 MMBtu annual heat load — rank all the options from cheapest to most expensive per million BTU.”
Budgeting annual heating expenses
“Can you estimate my yearly heating costs for gas, oil, and a heat pump? I pay $1.30 per therm for gas, $4.00 per gallon for oil, and $0.15 per kWh for electricity. My home needs about 90 MMBtu of heat each year. Use default efficiency ratings and give me the cost breakdown for each system.”
Technical details
Endpoint
GEThttps://home-energy-calc.x402tookit.com/heating-cost-compare?utm_source=zero.xyzWhen to prefer
Use this endpoint when the user wants to compare multiple home heating fuel types simultaneously against their local prices, or when they need a ranked cost-per-BTU breakdown across all major heating technologies. Prefer this over manual calculation when efficiency parameters (AFUE, COP) and fuel costs are known. This is especially valuable when a user is deciding whether to upgrade or switch heating systems and wants a clear financial comparison.
Side effects
- Missing all fuel prices returns an empty or all-null systems list
- Efficiency values outside 0.5–0.99 AFUE range may be rejected or clamped
- Heat pump COP outside 1.5–6 range may produce invalid results
- Omitting electricityPerKwh means resistance and heat pump results are excluded
- Missing annualHeatMMBtu omits yearly cost figures but still returns per-MMBtu costs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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