Cooling time depends on area and capacity
On hot sunny days, many people wonder how long the air conditioner takes to cool the space. This is not fixed but changes depending on the room area and equipment capacity.
Mr. Al Fouz - HVAC expert (technician specializing in air conditioning and ventilation) at ABACO Air Services (USA), said: "With a small room of about 14m2, a 5,000 BTU air conditioner can reduce 5 - 8 degrees Celsius in 30 - 45 minutes". BTU (British Thermal Unit) is a unit that measures cooling capacity, reflecting the ability to remove heat from the air.
For rooms with an average of 18 - 46m2, air conditioners with a capacity of 10,000 - 18,000 BTU usually take 45 - 60 minutes to reach the desired temperature level. Meanwhile, large spaces or high ceilings can take up to 2 hours or more, even when using equipment over 20,00 BTU.
Experts emphasize that choosing the right power is a key factor. A machine with too little power will cool slowly, while a machine with too much power will waste electricity.
Factors that affect and ways to cool down faster
Besides area and capacity, many other factors also affect cooling speed. Mr. Josh Mitchell, HVAC expert and owner of Air Conditioner Lab (USA), said that air conditioners play an important role.
Accordingly, window air conditioners usually cool faster thanks to their ability to push hot air directly out. Mobile air conditioners are less efficient, while central air conditioning systems take longer than initially but maintain better stable temperatures.
Initial temperature is also a noteworthy factor. "The larger the temperature difference inside and outside, the longer the cooling time," Mr. Mitchell said. In addition, the insulation of the room is also significantly affected. Old houses with poor insulation will easily cause cold air to escape.
To increase efficiency, experts recommend closing doors and windows, cleaning the filter regularly and maintaining it periodically. Keeping the filter clean helps air flow better, thereby shortening cooling time.
Experts also note that instead of choosing a machine that is too large, users should balance the power according to the area to achieve optimal efficiency, save electricity and ensure device durability.
