Choosing an air conditioner for an apartment of 70 square meters is not just about reviewing prices and special offers. Incorrectly estimated device power can lead to poor cooling, increased electricity consumption and higher bills during the summer months.
Experts point out that a space of this size generally requires a device with a cooling power between 18,000 and 24,000 BTU, that is, from 5.3 to 7 kilowatts. However, square footage alone is not the only criterion to consider.
The final choice is influenced by numerous factors, including the quality of the insulation, the number and size of windows, exposure to the sun, the layout of the rooms, but also the number of people who live in the apartment every day.
Insulation and the location of the apartment play a big role
Apartments with good insulation and less exposure to direct solar radiation require less cooling power. In such conditions, an 18,000 BTU air conditioner can often meet household needs.
On the other hand, apartments with poorer insulation and large south-facing windows can retain significantly more heat during the summer. In such cases, a device of at least 24,000 BTU is recommended, and sometimes more powerful models.
An additional factor is people and household appliances. Each person in the room increases the total heat, so about 600 BTUs per household member can be added to the basic calculation. Computers, TVs, and other appliances that run for long periods of time also affect room temperature, which is why an additional 1,000 BTUs are recommended for each larger appliance that is in constant use.
Ceiling height and air conditioning additionally affect the calculation
Common calculations usually refer to rooms with ceilings up to 2.7 meters high. In apartments or houses with higher ceilings, it is necessary to count on a larger volume of air that needs to be cooled.
For this reason, experts advise increasing the required power of the air conditioner by 10 to 20 percent in order to achieve an even temperature throughout the space.
High outside temperatures also affect the operation of the device. In areas where temperatures regularly exceed 35 degrees Celsius, weaker air conditioners can run almost non-stop without managing to cool the space sufficiently.
In order to avoid mistakes during the purchase, it is recommended to consult with an expert service technician who can assess the real needs of the space and check whether the existing electrical installation corresponds to the planned device. Online calculators for estimating the required cooling power can also help.
Equally important as the choice of device is its correct use. Regular filter cleaning and servicing contribute to more efficient operation and a longer service life of the air conditioner. Using curtains or blinds during the hottest part of the day can reduce the heating of rooms, while the correct temperature setting helps to reduce electricity consumption.
When buying, it is recommended to pay attention to the energy efficiency of the device. Models with A++ and A+++ labels consume less electricity and can bring significant savings in the long run compared to less efficient devices.
