
Portable AC Power Draw
Estimate running and starting watts for portable air conditioners and check circuit safety.
Calculate PowerLast updated:
Estimate hourly, daily, monthly and annual operating cost for mini split air conditioners or heat pumps.

Estimate running and starting watts for portable air conditioners and check circuit safety.
Calculate Power
Estimate daily, monthly, and annual operating costs for electric water heaters.
Calculate Costs
Estimate monthly and annual operating costs for electric fireplaces.
Calculate Costs
Estimate annual operating cost and savings from upgrading refrigerators.
Calculate Costs
Estimate daily and monthly energy consumption for residential pool pumps to optimize runtime and save on bills.
Calculate Energy Use
Calculate electricity usage and costs for heat pump systems based on home size, climate zone, and efficiency ratings.
Calculate Usage
Estimate how long emergency radios will run based on battery size, current draw, operating mode, and temperature.
Estimate Battery Life
Size battery backup for your Starlink during outages. Covers Standard, Mini, and High Performance models with 12V/24V battery recommendations.
Calculate Backup Needs
Quickly compare running costs for different mini split sizes and efficiency ratings. Supports SEER, SEER2 and HSPF2 inputs with presets for common scenarios.