How Much Energy Does An Air Conditioning System Consume?

If you ever wondered why your electric bills cost you more than you expected after installing an air-conditioning (AC) system in your home and want to lower the cost contributed by this particular appliance, you might need to check how much the total power that is consumed by the unit.

To evaluate how much electricity is being consumed by your AC unit, you have to scan the label first to know the amount of Amps and at what voltage is the power consumption of the AC. You will notice these values marked on the unit’s information tags.

Check for the compressor and fan’s energy data. The running compressor is the most substantial reason why your AC unit consumes an enormous amount of electricity. A unit usually consists of an indoor and an outdoor component. The indoor part is the one that releases cooled air to your room. The external component houses the compressors, which are essential for the process of regulating the temperature by compressing the refrigerant. It is also important to look for the amount of voltage that is used to operate your AC on the tag.

Next, pinpoint where the section on for the fan is on the information tag. The amount of power that the fan requires must be in a few Few Load Amps (FLA) only since the function of this part is to move air from inside your home to the surrounding outside air.

As mentioned, the primary consumer of energy is the compressor housed in the outdoor component of the air conditioner. The Rated Load Amps (RLA) value, which is the amount of electrical current measured in amps that is consumed by the compressor at its optimal working condition, is the one that you should look. If your compressor is not working regularly, then you may have to look for the Locked Rotor Amps (LRA) value instead.

Once you have the FLA and RLA (or LRA for the jammed compressor), add their values together. The sum is the total amperage that the whole air conditioning unit consumes when it is operating. To get the unit’s total power consumption in Watts, multiply this total amperage by the voltage. To figure out the total energy in kWh, just compute the time (in hours) of a day that the AC unit is switched on times the total power consumption (watts) that you have calculated earlier.

To save energy, you may need to raise the temperature on the thermostat. Since the amount of time that the unit is working contributes largely to the total power consumption as seen in the computation above, it is wise to lower the time that the unit is on. You can do this by raising the thermostat’s temperature, which means it is not necessary that air conditioner has to be switched on for too long to get the desired temperature circulating in your room.

Now that you know the total power that is consumed by your air cooling system, you can also check how much money the unit costs you for a day. Get the energy consumption value computed above (in kWh) and multiply it by the electricity price per kWh in your area. The total is the amount of money you spend for the AC in a day.