Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Heat Pump Savings Calculator (vs Gas or Oil)

Compare the annual heating cost of a heat pump against a gas or oil furnace using your heat demand, the heat pump's COP, furnace efficiency, and both fuel prices.

Annual heat demand (delivered) (kWh/yr)

Heat pump COP (seasonal average)

Electricity price ($/kWh)

Furnace / boiler efficiency (%)

Fuel price (per kWh equivalent) ($/kWh)

Solar Energy

Solar Savings Calculator

Calculate monthly bill savings from a solar PV system by multiplying solar production by your electricity rate. Use it to estimate the financial benefit of an installed or planned system month-by-month.

Monthly Solar Production (kWh)

Electricity Rate ($/kWh)

Key differences

	Heat Pump Savings Calculator (vs Gas or Oil)	Solar Savings Calculator
Category	Solar Energy	Solar Energy
Inputs required	5	2
Result	Annual heating savings ($/yr)	Monthly Savings ($)
What it does	Compare the annual heating cost of a heat pump against a gas or oil furnace using your heat demand, the heat pump's COP, furnace efficiency, and both fuel prices.	Calculate monthly bill savings from a solar PV system by multiplying solar production by your electricity rate. Use it to estimate the financial benefit of an installed or planned system month-by-month.