Calculator category

Load calculators

Estimate connected load and running cost for homes and equipment.

8 calculators All calculators

Calculator

Appliance Energy Cost Calculator

Find which appliance costs you the most to run.

Outputs: Cost per day · Cost per month · Cost per year

Calculator

Generator watts from running load plus the largest motor start.

Outputs: Recommended generator size · In kilowatts

Calculator

Compare annual heating cost for a heat pump against a gas furnace.

Outputs: Heat pump cost per year · Gas furnace cost per year · Annual savings with heat pump

Calculator

Estimate total home load and check it against service size.

Outputs: Estimated connected load · Load current · Service headroom

Calculator

Estimate heating and cooling cost for any period.

Outputs: Cost for period · Energy for period · Cost per full-load hour

Calculator

Compare old bulbs with LEDs including replacements.

Outputs: Old bulbs total per year · LED total per year · Yearly savings

Calculator

NEC 220 style demand estimate for residential services.

Outputs: Estimated demand · Service current at 240V

Calculator

Measure standby power drain and its yearly cost.

Outputs: Wasted energy per year · Wasted cost per year