How many watts does a room air conditioner use?
An average central ac will use 3000 to 5000 watts of power every hour for around 9 hours a day during the hotter months. Click calculate to find the energy consumption of a central air conditioner using 3500 Watts for 3 hours a day @ $0.10 per kWh.
As a general reference point, a 3 ton central air conditioner uses around 3500 watts per hour and a 12,000 BTU window unit uses about 1200 watts per hour.
- (Dividing by 1,000 changes watt-hours to kilowatt-hours.) For example, in this case the mathematical formula looks like this: 550 x 24 ÷ 1,000 x $0.12. The cost to run a 5-amp, 5,000-Btu air conditioner over a 24-hour period is about $1.60.
- EER(Energy Efficiency Ratio)=cooling capacity of ac/power consumed by ac. cooling capacity of 1 ton is equal to 3.517 kW of power. AC consists of two units, Indoor unit which is called the evaporator and the Outdoor Unit which called the Compressor.
- For example if the annual kWh rating is 875 kWh, divided by 365 days will give you about 2.4 kWh per day, which means the average wattage (accounting for all factors) is about 100 watts. Click calculate to find the energy consumption of a refrigerator using 180 Watts for 24 hours a day @ $0.10 per kWh.
As you can see , an AC with 1 Ton capacity will have a number 12 written in the model Code. Suppose you have a 1 Ton capacity Air-Conditioner , then a 12,000 BTU (or 1 Ton) type AC typically uses about 1200 watts of electricity.
- As you can see , an AC with 1 Ton capacity will have a number 12 written in the model Code. Suppose you have a 1 Ton capacity Air-Conditioner , then a 12,000 BTU (or 1 Ton) type AC typically uses about 1200 watts of electricity. Now , Multiply this value to the number of days you will use your AC in a month.
- A ton, as used in the HVAC field, is a term that describes how much heat the AC unit can remove from a home in one hour. The measurement for heat is the British thermal unit (BTU). One ton of air conditioning can remove 12,000 BTUs of air per hour. They are the most efficient units available.
- The power consumption of domestic fridges is typically between 100 and 200 watts. Over a full day they are likely to use around 1 to 2 kilowatt-hours (kWh). Old domestic refrigerators and commercial refrigerators consume much more. The actual energy consumption of your fridge or freezer will depend on many factors.
At a cost of $0.134 per kWh, this amounts to $120.60 per month. A large 12,000 BTU air conditioner, like that in a window, running six hours each day will consume 270 kWh, at a cost of $36.26 per month.
- Air Conditioner Sizing Tutorial. How much air conditioner BTU's I need?
Room Size Square Footage Recommended BTU Range 17'X20' 340 8000 20'X20' 400 9000 18'X25' 450 10000 22'X25' 550 12000
- At the midpoint, 70 watts, if a kilowatt costs 10 cents per hour, the fan would cost 0.7 cents per hour (0.07 kwh x 10 cents). Extend that out to a month and it works out to $5.04 per month if it runs around the clock (0.7 cents per hour x 24 hours x 30 days). Two fans would be just over $10 per month.
- For example, a 900-watt air conditioner running for eight hours would consume 7.2 kWh (900 watts * 8 hours, divided by 1000). If you pay 22.8 cents per kWh, running such an air conditioner will add about $1.64 per night to your power bill, plus taxes and fees.
Updated: 26th October 2019