When it comes to air conditioning, one of the most important maintenance tasks is changing the air filter. It's essential to keep your air filter clean and replace it regularly to ensure your AC system is running efficiently and effectively. But how often should you change your AC filters?The general consensus is that you should replace your air filter every 90 days, if you don't have allergies. However, if you have pets or suffer from allergies or respiratory conditions, it's recommended to change the filter every 45 days.
Vacation homes or homes that don't get much use can usually wait to change filters every 9-12 months. The frequency of air filter replacement also depends on the type of filter you use. Pleated air filters (such as those manufactured by FilterBuy) should be replaced every 90 days, while HEPA filters (high-energy particulate air filters) should be replaced every 30 days. Fiberglass filters should be replaced every 60 days, while high-end pleated filters can last up to 6 months.
It's also important to visually inspect the filter every month for excessive particulate buildup. If the dirty air filter is completely covered with dust and dirt, it's a good idea to change the filter even if it hasn't reached the end of its recommended life. If there is no smoker or pets in your home, and your filter is the 1 filter that is commonly sold with a MERV rating of 4, you should be able to wait up to 90 days before changing it. In general, most air filter manufacturers and HVAC companies recommend changing the air filter every 90 days or 3 months. That may change depending on the location of your home (e.g.
EJ. dry and dusty climates), if you have pets and the age of your system and equipment. Be sure to replace them with the correct size and type of air filter. If your air conditioner is working properly, you can remove the filter and buy one that is identical to it. More cycles mean more filter passes and opportunities to trap contaminants, so filters typically fill faster during periods of heavy use.
The Minimum Efficiency Report Value (MERV) rating for an air filter measures how effectively the filter prevents dust and other contaminants from passing through the filter into the air stream. If you live in a mild climate and only use your air conditioner or heater for a few hours a day, a filter could last the entire season or up to an entire year. The longer the filter is in place, the more dirt, dust and allergens are trapped, clogging the filter and decreasing its efficiency. Now that you know when to change your AC filters, make sure you do so regularly for maximum efficiency!.