At HVAC.com, our writers create solutions that put you in control of your HVAC system. Our product reviews and recommendations are researched and backed by real buyers and industry experts, not dictated by our partners. How often you change your air conditioner’s filter depends on the type of filter you are using and environmental factors specific
to your household. Typically, 1” disposable filters should be replaced every 1 to 3 months. If you have a thicker, high-efficiency filter, you should change it once every 6 to 12 months. Most filters have a recommended guideline detailing how long they last or when they should be changed. When you purchase a new filter, check the packaging for these details. The standard time recommended to change a high-quality air filter is at least once every three months.
However, if the filter appears dirty, change it immediately! Dirty or clogged air filters prevent healthy air flow, damage components inside your air conditioner, and decrease your system’s efficiency. Factors at PlayIf your filter doesn’t indicate when it should be changed, there are some factors to consider when deciding how often to change it:
When you have more contaminants in the home, from pets, people, and activities, air filters should be changed more frequently. Problems from a Dirty FilterThe filter is supposed to keep your unit clean, and when the filter is dirty or clogged, some problems can arise, such as:
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Without a clean air filter, your HVAC unit works harder and is prone to more breakdowns. Compared to other DIY home improvement projects, changing air filters is a quick and painless process that can be done in less than an hour. However, many homeowners are unaware of how often air filters need to be replaced, leaving their system vulnerable to damage. Keep reading to learn when and how to change your air filter. Why Changing Your Filter Is ImportantAir filters trap pet hair, dust, and other irritating particles so that your air conditioning system delivers fresh, clean air back into your home. Eventually, the filter traps so much dust and debris that air can’t properly filter or travel to the HVAC unit, leading to:
You should ideally change your air filter every three months, however, there are certain factors to consider when determining when to change out an old filter.
While these factors affect the frequency of air filter replacement, you should visually inspect your filter every month to check for excess particle buildup. If the dirty air filter is completely layered with dust and debris, it’s a good idea to change the filter even if it hasn’t reached the end of its recommended lifespan.  How to Change Your FilterHere’s how to change your air filter when it’s time for a replacement.
What happens if you don't change AC filters?If you don't change your AC filter, it will begin to fail. It will no longer be able to filter the air properly, letting dust and contaminants get into the AC. Dust jams the moving parts of an AC such as fan motors and valves. Airflow is restricted which creates a strain on the system.
How do you know if your AC needs a new filter?5 Signs That You Need to Change Your AC Filter. The Air Conditioning Unit is Too Hot. One clear sign that your AC filter needs replacing is when the back of the unit is too hot. ... . The Air Isn't Cold Enough. ... . The Electricity Bill Has Increased. ... . You're Suffering More Allergy Attacks. ... . There's More Dust Near the Air Vents.. Can I wash and reuse my AC filter?Key Takeaways. Washable air conditioner filters are very easy to clean and maintain. Unlike disposable filters, you can simply take them out of your HVAC unit, rinse them with water, and they're good to go again.
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How long do air conditioner filters last
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