Cooling · Virginia
How Much Does It Cost to Run a Window Air Conditioner in Virginia?
The short answer
In Virginia, a window air conditioner drawing 900W costs about $0.16 per hour — roughly $38.44 a month if it runs 8 hours a day.
Virginia’s average residential rate was 17.6¢ per kWh in July 2026 (EIA), 4% below the US average.
Source: U.S. EIA, July 2026 data · Updated
Window Air Conditioner cost by daily use in Virginia
| Daily use | kWh/month | Per day | Per month | Per year |
|---|---|---|---|---|
| 1 hour/day | 27.4 | $0.16 | $4.80 | $57.65 |
| 2 hours/day | 54.8 | $0.32 | $9.61 | $115 |
| 4 hours/day | 109.5 | $0.63 | $19.22 | $231 |
| 8 hours/day | 219.0 | $1.26 | $38.44 | $461 |
| 12 hours/day | 328.5 | $1.90 | $57.66 | $692 |
| 24 hours/day | 657.1 | $3.79 | $115 | $1,384 |
Virginia vs other states
At typical use, a window air conditioner costs $461 a year in Virginia — $800 less than in Hawaii and $127 more than in Louisiana.
Virginia has the 20th-most-expensive residential electricity of the 50 states and DC. electricity prices in Virginia · all states ranked
Electricity price trend in Virginia
17.6¢/kWh in July 2026 — ▲ +11.2% from a year earlier.
How to lower the cost of running a window air conditioner
Window air conditioners cool a single room and are far cheaper to run than central AC when you only need one or two rooms cool. Wattage scales with capacity: small 5,000 BTU units draw around 450–500W, a 10,000 BTU unit around 900W, and large 15,000+ BTU units 1,300–1,500W. ENERGY STAR models with inverter compressors can use 20–35% less. The compressor cycles with the thermostat, so enter the hours it actually runs.
- Pick the right size — an oversized unit cycles constantly and dehumidifies poorly.
- Seal the gaps around the unit with foam strips to keep hot air out.
- Clean the washable filter every two weeks in peak season.
Questions
Frequently asked questions
How much does it cost to run a window air conditioner for 24 hours in Virginia?
Running a 900W window air conditioner for 24 hours uses about 21.6 kWh, which costs about $3.79 at Virginia’s average rate of 17.6¢/kWh.
How many kWh does a window air conditioner use per month?
At 8 hours a day, a typical window air conditioner uses about 219 kWh a month. In Virginia that costs $38.44.
Is it expensive to run a window air conditioner in Virginia?
Virginia has the 20th-most-expensive residential electricity of the 50 states and DC at 17.6¢/kWh — pricier than most. Running a window air conditioner here costs about $461 a year at typical use, compared with $481 at the national average rate.
What is the electricity rate in Virginia right now?
The average residential electricity rate in Virginia was 17.6¢ per kWh in July 2026, according to the latest EIA data — up 11.2% from a year earlier.
Is a window AC cheaper to run than central air?
For cooling one or two rooms, yes. A 900W window unit uses about a quarter of the power of a typical 3,500W central system.
Window Air Conditioner costs in nearby states
Other appliances in Virginia
Cheapest and priciest states
Comparisons
Sources & method
- Electricity rates: U.S. Energy Information Administration, Electric Power Monthly — average residential retail price, July 2026 (latest available). Retrieved .
- CO₂: EIA State Electricity Profiles, 2024 emissions rate of in-state power generation.
- Default usage for window air conditioner: 8 hours a day. Typical power 900W.
- Formulas, duty cycles and limitations: methodology. Data download: open data (CC BY 4.0).