Whole-Home UPS/Backup Power Calculator

Estimate complete backup power needs for an entire house including HVAC and critical appliances.

Determine continuous and surge loads for your home to size generators or battery systems with appropriate runtime and safety margins.

Key Features

Square Footage

AC Tonnage

Heating Type

Refrigerators/Freezers

Well Pump

Sump Pump

Water Heater Type

Electric Dryer

Desired Runtime (hrs)

Calculate battery backup power for primary and secondary sump pumps to prevent basement flooding during power outages.

Calculate backup power requirements for residential and commercial refrigerators and freezers to prevent food spoilage during outages.

Size backup power systems for sewage pumps and ventilation to prevent basement bathroom backups during electrical outages.