Calculator
Appliance Energy Cost Calculator
Find which appliance costs you the most to run.
Open calculatorCalculator category
Load calculators
Estimate connected load and running cost for homes and equipment.
Calculator
BTU to Tonnage Converter
Convert BTU/hr to tons of cooling and watts.
Open calculatorCalculator
Generator Size Calculator
Generator watts from running load plus the largest motor start.
Open calculatorCalculator
Heat Pump vs Gas Furnace Calculator
Compare annual heating cost for a heat pump against a gas furnace.
Open calculatorCalculator
HVAC Running Cost Calculator
Estimate heating and cooling cost for any period.
Open calculatorCalculator
Lighting Cost Calculator
Compare old bulbs with LEDs including replacements.
Open calculatorCalculator
Panel and Service Size Estimator
NEC 220 style demand estimate for residential services.
Open calculator