Window, portable, central — see real monthly cost for your home.
¢/kWh
8 hours/day
55%
Daily
$0.00
Monthly
$0.00
Yearly
$0.00
What If...
About this
Window and portable cool one room. Central cools the whole house. Outdoor temperature, insulation, sun load, and how far below outside you keep the house drive the real duty cycle.
Every 1°F lower thermostat can add 3–5% more cost.
Central AC for a 3br house can easily be 5–8× a single window unit.