How Much Electricity Does A Small Window Ac Use

Cost to run an ac your monthly power bill depends on local rates but there are a couple of ways to estimate your costs.

How much electricity does a small window ac use. Most common voltage ratings for ac units are 115 125 and 220 volts and amperage rating can run from 15 to 20 amps. For test purposes i made power measurements using 2 typical products as examples. Do you have the best window ac. A good estimate for a medium sized window or wall air conditioning unit is 900 watts.

The lower end of the spectrum 8 000 btu is enough for smaller single rooms. A 5 000 btu small room budget ac unit the emerson quiet kool window air conditioner right. Most smaller portable air conditioning units are powered around the 8 000 to 14 000 btu range. If we take the average of running the device for eight hours per day and also consider the national kwh rate of 0 13 you can estimate spending the following amount per month on electricity for these different sized window air conditioners.

1500w unit for comparison spends 1 5 kwh of electricity per hour. The average central air conditioning unit will use somewhere between 3000 and 5000 watts of power every hour that it is in use. Using these numbers you will be able to calculate how much using your air conditioner is going to cost you. Smallest window unit 500 watts.

High wattage air conditioners cost more to run. Those rated as 14 000 can cover large rooms and even small apartments. A typical box fan used for cooling and white noise both are good choices as they re popular and fit the price range many people shop in. For example a 1000w ac unit spends 1 kilowatt hour of electricity per hour.

Eer is a measurement of how many btus the unit uses for each watt of power consumed. An appliance s nameplate displays the amount of power it draws while running measured in watts. The standard eer for most air conditioners is set at 10 0. 0 071 x 8 hours per day 0 57 per day 0 572 x 7 days per week 4 per week 4 x 4 weeks per month 16 per month.

If we assume that you run the unit for eight hours per day here s how much electricity it costs to operate a 550 watt window ac unit. Given that an average price of 1 kwh in the us is 0 1319 you can save quite a bit if you invest in an above average energy efficient air conditioner. What affects how many watts an air conditioner uses. In other words it is a measurement of how efficient and how much energy your ac unit uses to cool the room.

Largest window units 1440 watts medium window unit 900 watts. The lower two voltage ratings are common in smaller units while units with a rating higher than 15 000 btus will require a 220 volt circuit.