Is electricity expensive in Connecticut?

Connecticut's residential average of 32.2¢/kWh is 71% above the U.S. average of 18.8¢/kWh, ranking 49 of 51 jurisdictions (1 = cheapest).

What's the cheapest room air conditioner to run in Connecticut?

Among currently certified models, the TCL T05WV9M costs the least at about $88 a year at Connecticut rates (274 kWh/yr).

How does Connecticut compare with other states?

The same median room air conditioner costs $66 a year in North Dakota (the cheapest state) and $248 in Hawaii (the priciest). Connecticut sits at $171.

Data through April 2026

Cost to run · Connecticut · 32.2¢/kWh residential average

How much does it cost to run a room air conditioner in Connecticut?

$171/yr · median certified model

Electricity in Connecticut is genuinely expensive — 32.2¢/kWh, 71% above the national average — so the median certified room air conditioner costs about $171 a year, and efficiency differences between models turn into real money.

Connecticut sits at rank 49 of 51 — near the very top of the cost table for a room air conditioner. At local rates, certified models span $88 (TCL T05WV9M) to $676 (Friedrich KCVL36B30A) per year — $588 of annual headroom that depends entirely on which unit you buy. For reference, the national extremes are North Dakota (12.3¢/kWh) and Hawaii (46.6¢/kWh); the same median room air conditioner would cost $66 and $248 a year there.

Connecticut

$171

US average

$100

North Dakota

$66

Hawaii

$248

Median certified room air conditioner (532 kWh/yr) per year, at each rate

The cheapest room air conditioners to run at Connecticut rates

Top 10 by certified kWh, priced at 32.2¢/kWh
#	Model	kWh/yr	$/yr in CT
1	TCL T05WV9M	274	$88
2	TCL T05WV9MB	274	$88
3	TCL T05WV9R	274	$88
4	TCL T05WV9RB	274	$88
5	TCL W5WC72	274	$88
6	TCL W5WC72-B	274	$88
7	TCL W5WC72M	274	$88
8	TCL W5WC72M-B	274	$88
9	LG LW6023IVSMmost efficient	290	$94
10	Midea MAW06U1QWTmost efficient	298	$96

Price any model at Connecticut rates

Your rate, your numbers

Annual use (kWh)

Electricity rate

Per day: 47¢
Per month: $14.29
Per year: $172

532 kWh/yr × 32.2¢/kWh = $172/yr

Prefilled with the median certified room air conditioner (532 kWh/yr). Every model page on this site carries its exact certified figure.

Questions, answered with the data

How much does it cost to run a room air conditioner in Connecticut?: About $171 a year for the median ENERGY STAR certified room air conditioner, at Connecticut's average residential rate of 32.2¢/kWh — that's $14.29 a month.
Is electricity expensive in Connecticut?: Connecticut's residential average of 32.2¢/kWh is 71% above the U.S. average of 18.8¢/kWh, ranking 49 of 51 jurisdictions (1 = cheapest).
What's the cheapest room air conditioner to run in Connecticut?: Among currently certified models, the TCL T05WV9M costs the least at about $88 a year at Connecticut rates (274 kWh/yr).
How does Connecticut compare with other states?: The same median room air conditioner costs $66 a year in North Dakota (the cheapest state) and $248 in Hawaii (the priciest). Connecticut sits at $171.

Keep digging

Rate source: US EIA, average residential price of electricity, see methodology.