Hanoi is in the hottest days, the highest temperature can reach 41 degrees Celsius. Everyone wants to lie still in the air-conditioned room with the coldest temperature possible.
Many people have a habit of using the air conditioner on very hot days, which is to reduce the temperature on the remote to the lowest possible level in the hope that the room temperature can reach the level recorded in the remote (16 degrees Celsius).
And at the end of the month, dozens of people went on Facebook to scream that this month’s electricity bill has increased 3 times 4 times but I don’t know why??? Then here is the reason.
Whether the room is cool or not is not decided by the remote
To know how cool a room can be is a “framework”, we need to refer to a few basic factors such as room area, cooling capacity of the air conditioner and room insulation conditions such as wall thickness, whether or not the outside of the house is equipped with heat-resistant or reflective panels, the number of rooms facing the sun, etc..
A room with an area of 20 square meters, using 9000 BTU air conditioning, west-facing windows and 3 sides facing the sun regularly, you should never expect to be able to lower the temperature in the room down to 35 degrees on hot days of 41 degrees. like today.
Why is adjusting the air conditioner temperature on the low remote very power-consuming
Air conditioner is in fact a pretty smart device, it does not operate manually by remote and is completely controlled by humans. There are always hidden temperature sensors on the air conditioner.
Temperature sensor located outside the heater (outdoor temperature measurement)
The way the air conditioner works is that it will increase the cooling capacity to the maximum in the first stage to try to bring the measured temperature in the room to the level set on the remote. When the room temperature is equal to the temperature set on the remote, the air conditioner will automatically reduce the capacity to the minimum or completely stop the cooling ability and wait until the room temperature is higher to turn on again. During such breaks, the air conditioner consumes very little energy, mainly to maintain the fan.
Room temperature sensor in cold side.
That is also the reason why when setting the temperature on the remote to 16 degrees Celsius, in too hot conditions, the air conditioner cannot pull the actual temperature in the room so low, but due to the preset algorithm of air conditioner, it will run at maximum capacity the whole time you turn on the air conditioner without resting for 1 second. So the longer you turn on the air conditioner, the longer your electricity bill will be compared to the same time on a cool day.
To illustrate, the writer has added a smart electric meter to the air conditioner in the room to measure the daily electricity consumption, the daily use time is almost the same from about 9 pm to 9 am. Take a look at the power consumption when setting the remote at 16 degrees Celsius during cool weather and peak heat.
To save money, set the remote to a cool enough temperature
Because of the above reasons, setting the air conditioner at a comfortable level for the human body (about 28 – 30 degrees Celsius) will make it possible for the air conditioner to have a longer “rest” while helping to cut electricity bills. up to half, while making the air conditioner more durable.