Motors and compressors need a surge of power to start. Pick the appliances you'll run and get both running and starting watts — then find the generator that handles them.
Refrigerators and ACs spike to 2-3x running watts on startup — the calculator includes those peaks.
Oversized generators waste fuel and never load properly. Buy for your actual needs plus margin.
Switch between portable essentials and whole-house standby scenarios to compare.
All calculations run locally in your browser.
Power through outages.