U.S. residential electricity EIA data: July 2026 US average 18.3¢/kWh Updated

Cooling · Wisconsin

How Much Does It Cost to Run a Central Air Conditioner in Wisconsin?

The short answer

In Wisconsin, a central air conditioner drawing 3,500W costs about $0.67 per hour — roughly $162 a month if it runs 8 hours a day.

Wisconsin’s average residential rate was 19.1¢ per kWh in July 2026 (EIA), 4% above the US average.

Source: U.S. EIA, July 2026 data · Updated

Central Air Conditioner cost by daily use in Wisconsin

Cost at 19.1¢/kWh, the Wisconsin average (EIA, Jul 2026)
Daily usekWh/monthPer dayPer monthPer year
1 hour/day 106.5 $0.67 $20.29 $243
2 hours/day 212.9 $1.33 $40.59 $487
4 hours/day 425.9 $2.67 $81.17 $974
8 hours/day 851.8 $5.34 $162 $1,948
12 hours/day 1,277.6 $8.01 $244 $2,922
24 hours/day 2,555.3 $16.01 $487 $5,844

Wisconsin vs other states

At typical use, a central air conditioner costs $1,948 a year in Wisconsin — $2,958 less than in Hawaii and $648 more than in Louisiana.

Wisconsin has the 18th-most-expensive residential electricity of the 50 states and DC. electricity prices in Wisconsin · all states ranked

Electricity price trend in Wisconsin

19.1¢/kWh in July 2026 — ▲ +4.4% from a year earlier.

How to lower the cost of running a central air conditioner

Central AC is usually the single largest electricity user in a home during summer. Power draw depends on capacity (tons) and efficiency (SEER2 rating): a 3-ton system typically draws 3–4 kW while running. The compressor cycles on and off to hold your thermostat setting, so enter the hours per day it actually runs — on a hot afternoon that can be most of the day, while on a mild day it may be only a few hours.

  • Each degree you raise the thermostat in summer saves roughly 3% on cooling.
  • Replace the air filter every 1–3 months and keep the outdoor condenser clear of debris.
  • Use ceiling fans so you can set the thermostat 3–4°F higher with the same comfort.
  • Summers in Wisconsin are relatively mild, so cooling costs are concentrated in a few hot weeks each year.

Questions

Frequently asked questions

How much does it cost to run a central air conditioner for 24 hours in Wisconsin?

Running a 3,500W central air conditioner for 24 hours uses about 84.0 kWh, which costs about $16.01 at Wisconsin’s average rate of 19.1¢/kWh.

How many kWh does a central air conditioner use per month?

At 8 hours a day, a typical central air conditioner uses about 852 kWh a month. In Wisconsin that costs $162.

Is it expensive to run a central air conditioner in Wisconsin?

Wisconsin has the 18th-most-expensive residential electricity of the 50 states and DC at 19.1¢/kWh — pricier than most. Running a central air conditioner here costs about $1,948 a year at typical use, compared with $1,871 at the national average rate.

What is the electricity rate in Wisconsin right now?

The average residential electricity rate in Wisconsin was 19.1¢ per kWh in July 2026, according to the latest EIA data — up 4.4% from a year earlier.

How many watts does a central air conditioner use?

Most residential central AC systems draw 2,000–5,000W while running; a typical 3-ton system uses about 3,500W.

Sources & method