How much does it cost to run an air conditioner in Wyoming?

Short answer

A 3-ton central air conditioner in Wyoming costs about $28.55 in July and $68.72 a year at 14.01¢/kWh; an 8,000 BTU window unit about $5.58 in July.

• Wyoming pays 14.01¢/kWh on average for Jan–Aug 2026 — 23% below the U.S. average of 18.19¢, the 42nd most expensive of the 50 states and DC.
• Wyoming averages 296 cooling degree days a year against 1,216 nationally (NOAA), so we estimate 183 full-load cooling hours — 2.4 a day in July.
• A new 3-ton split system sold for Wyoming must reach at least SEER2 13.4 (DOE northern region); it draws about 2.69 kW on average and $0.38 an hour.
• Moving up to the ENERGY STAR average of about SEER2 17 would cut the yearly bill to $54.16 — $14.55 a year less.
• The average Wyoming home used 850 kWh a month in 2025; this system adds 204 kWh in July.