The answer to the question of whether air conditioning filters are necessary is a resounding yes. Without a filter, your AC system is at risk of serious and costly problems. It's important to never attempt to run the air conditioner without a filter, and to replace it as soon as possible when it needs to be changed. The primary purpose of an AC filter is to protect HVAC equipment, not necessarily to improve indoor air quality.
Many oven manufacturers recommend using an inexpensive fiberglass filter, but it's best to leave the selection of these filters to the professionals. If the filter is too powerful, it can cut off airflow through the HVAC system, leading to component damage and a loss of home comfort. A clear sign that the AC filter needs to be replaced is when the back of the unit is too hot. If the filter is heavily soiled, you may feel warm air coming out the back of the unit.
A clogged filter forces the air conditioner to work harder to keep the house cool, leading to more frequent repairs and a shorter lifespan for the unit. By changing your AC filter regularly, you can reduce the load on your air conditioner and save money on utilities each month. If you notice that your air conditioner doesn't cool down as it normally does or blows hot air, check the air conditioning filter first. The filter traps particles within its fibers, keeping them out of the HVAC system and protecting your family and equipment from dust accumulation. The only type of filters that trap allergens and spores are HEPA, or high-energy particulate air filters.
When you change your air conditioning filter every month during peak cooling season, you can save about 15% each month on utilities, as well as avoid repair problems due to airflow restrictions. The air conditioning filter isn't the most complicated part of an AC system, but it can dramatically affect your efficiency and the air quality in your home. Everyone agrees that you should change your HVAC filter on a regular basis, but not everyone agrees on the type of filter you should use.
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