Cost per million BTU of delivered heat for resistance, heat pump, gas, propane a
Cost per million BTU of delivered heat for resistance, heat pump, gas, propane and heating oil furnaces, from your prices.
Answers HTTP 429 without x402 payment termsour last check, 2026-10-21
0 of 1checks answered this week
n/amedian answer time
$0.02listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://home-energy-calc.x402tookit.com/heating-cost-compare
| Category | Market data |
|---|---|
| Provider host | home-energy-calc.x402tookit.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | no x402 terms | 429 | 338 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"annualHeatMMBtu": 60,
"electricityPerKwh": 0.16,
"gasPerTherm": 1.5,
"oilPerGallon": 4,
"propanePerGallon": 3.2
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"annualHeatMMBtu": {
"description": "Yearly heat your home needs in million BTU (see /heat-loss), for yearly cost",
"type": "number"
},
"electricityPerKwh": {
"description": "Electricity price per kWh (gives resistance and heat pump)",
"type": "number"
},
"gasAfue": {
"description": "Gas furnace efficiency 0.5 to 0.99 (default 0.95)",
"type": "number"
},
"gasPerTherm": {
"description": "Natural gas price per therm (1 therm = 100,000 BTU)",
"type": "number"
},
"heatPumpCop": {
"description": "Seasonal heat pump COP, 1.5 to 6 (default 3)",
"type": "number"
},
"oilAfue": {
"description": "Oil furnace efficiency 0.5 to 0.99 (default 0.85)",
"type": "number"
},
"oilPerGallon": {
"description": "Heating oil price per gallon (137,381 BTU/gal)",
"type": "number"
},
"propaneAfue": {
"description": "Propane furnace efficiency 0.5 to 0.99 (default 0.95)",
"type": "number"
},
"propanePerGallon": {
"description": "Propane price per gallon (91,452 BTU/gal)",
"type": "number"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"heatPumpBreakEvenElectricityPerKwhVsGas": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"systemsRankedCheapestFirst": {
"items": {
"properties": {
"assumedEfficiency": {
"type": [
"null",
"number"
]
},
"costPerMMBtuDelivered": {
"type": [
"null",
"number"
]
},
"note": {
"type": [
"null",
"string"
]
},
"relativeToCheapest": {
"type": [
"null",
"number"
]
},
"system": {
"type": [
"null",
"string"
]
},
"yearlyCost": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}