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

How Much Does It Cost to Run a Portable Air Conditioner in Connecticut?

The short answer

Running a 1,200W portable air conditioner in Connecticut costs about $0.29 an hour. At 8 hours a day, that’s roughly $70.55 a month and $847 a year.

Connecticut’s average residential rate was 24.2¢ per kWh in July 2026 (EIA), 32% above the US average.

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

Portable Air Conditioner cost by daily use in Connecticut

Cost at 24.2¢/kWh, the Connecticut average (EIA, Jul 2026)
Daily usekWh/monthPer dayPer monthPer year
1 hour/day 36.5 $0.29 $8.82 $106
2 hours/day 73.0 $0.58 $17.64 $212
4 hours/day 146.0 $1.16 $35.28 $423
8 hours/day 292.0 $2.32 $70.55 $847
12 hours/day 438.0 $3.48 $106 $1,270
24 hours/day 876.1 $6.96 $212 $2,540

Connecticut vs other states

At typical use, a portable air conditioner costs $847 a year in Connecticut — $835 less than in Hawaii and $401 more than in Louisiana.

Connecticut has the 11th-most-expensive residential electricity of the 50 states and DC. electricity prices in Connecticut · all states ranked

Electricity price trend in Connecticut

24.2¢/kWh in July 2026 — ▼ −12.5% from a year earlier.

How to lower the cost of running a portable air conditioner

A portable AC sits inside the room and vents hot air through a hose, which makes it convenient but less efficient than a window unit: some of the heat it removes leaks back in, and single-hose models pull warm outside air into the room. A common 10,000–12,000 BTU portable unit draws around 1,000–1,300W. Dual-hose models are more efficient in hot climates.

  • Keep the exhaust hose as short and straight as possible, and insulate it if it gets hot.
  • Choose a dual-hose model for rooms you cool every day.
  • Close blinds on sun-facing windows during the hottest hours.
  • Summers in Connecticut 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 portable air conditioner for 24 hours in Connecticut?

Running a 1,200W portable air conditioner for 24 hours uses about 28.8 kWh, which costs about $6.96 at Connecticut’s average rate of 24.2¢/kWh.

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

At 8 hours a day, a typical portable air conditioner uses about 292 kWh a month. In Connecticut that costs $70.55.

Is it expensive to run a portable air conditioner in Connecticut?

Connecticut has the 11th-most-expensive residential electricity of the 50 states and DC at 24.2¢/kWh — pricier than most. Running a portable air conditioner here costs about $847 a year at typical use, compared with $642 at the national average rate.

What is the electricity rate in Connecticut right now?

The average residential electricity rate in Connecticut was 24.2¢ per kWh in July 2026, according to the latest EIA data — down 12.5% from a year earlier.

Do portable air conditioners use a lot of electricity?

They use about as much as a space heater — typically 800–1,500W — and more than a window AC of the same capacity because they are less efficient.

Portable Air Conditioner costs in nearby states

Cheapest and priciest states

Comparisons

Sources & method