What Happens If I Run My AC Without a Filter?
Compared to the other functional parts of an air conditioning unit, the air filter doesn't seem that important. However, you will be able to see the air filter's importance every time you pull out a dirty one. The air filter is designed to filter out dust, dirt, and debris from the air that it pulls in. This is not just to improve air quality in your home, however. It is to protect your air conditioning unit.
So what would happen if you ran your air conditioner without one?
YOUR AIR CONDITIONER WOULD MANIFEST DRAIN PROBLEMS
Over the course of the cooling process, your air conditioner produces condensation on the refrigerant tubing. Ideally, this condensation drips off into a pan and is safely drained away to prevent rust and other damage. Without an air filter, your unit is free to take in unfiltered air full of dust and dirt. This will be attracted to the moisture and stick there. It will affect the cooling ability of your unit, and as that dirt does drip off, it runs a high risk of clogging the drain that is not equipped to handle much more than water. With a clogged drain, the moisture lingers, free to cause rust.
YOUR HOME WILL NOT BE COOLED EFFICIENTLY
When dirt and dust stick to moist refrigerant tubes in your air conditioner, it not only causes drain problems but it serves as a sort of insulator to the tubing. This prevents the refrigerant inside from doing its job efficiently. Over time, the accumulation will grow from unfiltered air and will result in your air conditioner not cooling your home efficiently.
THE AIR QUALITY IN YOUR HOME WILL DROP
When an air conditioner is run without a filter, some of that dust may adhere to the moisture in the unit, but a great deal will end up inside your home. Dust is a part of every home, but when coming from an air conditioner, it will remain suspended in the air and your family will be breathing it in. It is no good for anyone, but particularly problematic for those with allergies or asthma.
Furthermore, dirt and dust that does get moist also has a chance to be blown into your duct work. It will accumulate there, leading to further air quality issues. However, the most concerning part will be that it gives mold a chance to grow in your ducts.
-A R Engh Team