Blog
Guides to the electricity cost of air conditioning and solar, each with a working calculator built into the page.
October 20, 2026
Ceiling fan vs air conditioner: how much cheaper is the fan?
A ceiling fan costs pennies a day while an AC costs dollars — compare the electricity cost of each and when to use both together.
October 20, 2026
How much does it cost to run an air conditioner overnight?
What running your AC all night adds to your bill at your state's electricity rate, and the sleep settings that cut it.
October 20, 2026
Inverter vs non-inverter air conditioner: which costs less to run?
See how much less electricity an inverter AC uses than a fixed-speed one at the same BTU rating, and how long the higher price takes to pay off.
September 14, 2026
12,000 vs 18,000 BTU air conditioner: how much more does the bigger one cost to run?
Compare the electricity cost of a 12,000 BTU and an 18,000 BTU AC at the same usage, and see when the bigger unit is actually the cheaper choice.
September 14, 2026
What temperature should you set your AC to save money?
The thermostat settings that actually cut your summer electric bill, and why chasing the coldest setting when you get home costs more, not less.
September 14, 2026
How much does it cost to run a portable air conditioner?
Portable ACs run less efficiently than window units for the same BTU rating — see what that costs per day and month at your state's electricity rate.
September 7, 2026
7 ways to lower your air conditioning electric bill
Practical, no-cost and low-cost ways to stay cool for less: thermostat strategy, filters, sealing leaks, fans, scheduling and more.
September 7, 2026
How much electricity does central air conditioning use?
How many kWh a central AC system uses per hour, per day and per summer month — and what that adds to your electric bill at your state's rate.
September 7, 2026
How much does it cost to run a window air conditioner?
Work out the daily, monthly and summer-long electricity cost of a window AC unit using your state's current residential electricity rate.