In order to check if an air conditioner is working, people normally test two things. First, they to see if the machine is blowing cold air, and then they listen for odd and new noises. Even if your air conditioner seems to be working fine, there still may be so hidden problems that need addressing. As a filter collects dust and dirt, as it is designed to, the blockage engenders problems for the machine, your wallet, and your health.
An air filter is designed to filter the air, so that you and your machine breathe easier. If dust and dirt are easily able to flow into certain inopportune places (like the motor), your machine is more likely to break down. Without a filter, an air conditioner would pump dust and dirt into the air, which can cause respiratory issues and trigger allergy symptoms. Keep yourself and your machine healthy by frequently changing and cleaning filters.
If you notice that your energy bill is higher than usual, the problem could be the direct result of a dirty filter. As a filter gets dirtier, the motor has to work harder to push cold air out. The harder the motor works, the more energy is needed.
Just because your machine turns on, blows cold air, and sounds good, doesn’t mean you don’t need to change a dirty filter. Avoid air conditioner repair by frequently checking your filter.