Calculators
Set your city once. These use that home.
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Heating and cooling bill
A planning year of gas heat, heat-pump heat, and cooling, from your city's degree days and electric rate.
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Attic insulation cost
Blown cellulose in an open attic, toward the R-value this site uses for your climate zone.
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Roof replacement cost
Tear-off and architectural shingles on a planning roof area taken from your square footage.
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Furnace and heat pump cost
Installed price for an 80,000 Btu gas furnace, a larger furnace, or a ducted heat pump. Not new ducts.
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Panel upgrade and small job costs
Electrical panel, new circuit, one bedroom of paint, dishwasher with the hookups already there.
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Cost of moving and rent
Planning rent in the new city, the gap versus what you pay now, and a local move.
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Mini-split vs window unit cost
Two prices that should never be averaged into one air-conditioner number.
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Water heater replacement cost
Installed price for an electric tank, gas tank, heat pump, or tankless unit in your city.
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Circuit load calculator
See if a heater, a window unit, and a microwave can share a 15- or 20-amp circuit.
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Room AC BTU calculator
How many BTUs that room needs, from its size, windows, and your city. Not a reason to buy the next size up.