Heating & Cooling Calculators
Estimate heat-pump and mini-split operating cost, COP, heating comparisons, water-heater savings, degree days, and cooling expense.
Heat Pump Running Cost Calculator
Estimate daily, monthly, and seasonal heat-pump electricity use, operating cost, and delivered heat.
CALCHeat Pump vs Gas Heating Cost Calculator
Compare annual energy cost for a heat pump and a gas heating system while accounting for COP and combustion efficiency.
CALCHeat Pump COP Calculator
Calculate coefficient of performance and electrical input from measured or rated heat output and power consumption.
CALCMini-Split Electricity Cost Calculator
Estimate mini-split monthly and annual electricity cost using rated input, runtime, duty cycle, and local electricity price.
CALCHeat Pump Water Heater Savings Calculator
Compare annual electricity use and cost for a heat-pump water heater and a conventional electric resistance water heater.
CALCHeating Degree Day Calculator
Calculate heating degree days for a period from base temperature, average outdoor temperature, and number of days.
CALCAir Conditioner and Heat Pump Cooling Cost Calculator
Estimate cooling electricity use and cost from cooling capacity, SEER, operating hours, duty cycle, and electricity rate.
Planning with heating & cooling calculators
Use several related tools rather than relying on one result. Energy systems are constrained by both energy and power, and final equipment choices depend on climate, operating schedules, manufacturer limits, utility rules, and local codes.