When and How to Change Your Air Filter

Maintaining a clean air filter is essential for the proper functioning of your HVAC unit. Changing air filters is a simple and straightforward process that can be done in less than an hour. However, many homeowners are unaware of how often air filters need to be replaced, making their system vulnerable to damage. Read on to learn when and how to change your air filter. The cabin filter, on the other hand, can last longer between a replacement, since cleaning further extends the life of the filter.

As long as the filter medium can filter dirt and debris, the filter is usable. Even without cleaning it, a cabin air filter lasts at least a year before needing a replacement. Most filters have arrow marks that indicate the correct location; these arrows should normally point toward the oven in the direction of air flow. However, over time, it is necessary to replace all filters, as cleaning them becomes less and less effective. There are a variety of different shapes and sizes of filters, and the manufacturer will include what size and shape are best for your oven or air conditioner.

You may also find it interesting to learn how to replace the air filter on a Lennox air conditioner. It's often better to clean household air filters rather than replace them, as long as they're still working properly. It may also be more practical to buy replaceable filters if you don't want to take the time to wash it. Whether you're trying to improve your home's air quality for health reasons or want to reduce energy and maintenance costs in your home, regularly cleaning or replacing your HVAC filter is an easy and affordable step in your home maintenance routine. If you install a new filter, but don't turn on the heater or air conditioner until a month or two later, the filter should be relatively clean, since the system hasn't let air through it.

The ideal is to change your air filter every three months, however, there are certain factors to consider when determining when to replace an old filter. Your home environment and how often you operate the heater or air conditioner can also affect how quickly your air filter gets dirty. Strict compliance with the regular cleaning of HVAC filters can help extend the life of the system beyond 25 years. But replace HVAC filters at least once a year or when they build up a significant amount of dirt. Then, use your vacuum (preferably with a soft brush) and vacuum up the loose dirt that surrounds the filters. The intake air filter cleans the air from dirt and debris when it enters the engine for the combustion process.

Factors To Consider When Replacing An Air Filter

When deciding when to replace an old air filter, there are several factors that should be taken into consideration.

The type of environment you live in will play a role in how often you need to change your air filter. If you live in an area with high levels of dust or pollen, you may need to change your air filter more frequently than someone who lives in an area with low levels of dust or pollen. The type of HVAC system you have will also affect how often you need to change your air filter. If you have an older system that uses disposable filters, you may need to change them more frequently than if you have a newer system that uses reusable filters. Additionally, if you have pets in your home, their fur can clog up your air filters more quickly than if you don’t have pets.


Changing or cleaning your air filter is an important part of maintaining your HVAC system.

It’s important to know when and how often you should change or clean your air filter so that your system runs efficiently and lasts longer. Consider factors such as environment, type of HVAC system, and presence of pets when determining when it’s time for a new air filter.

Deanne Capetillo
Deanne Capetillo

Incurable music evangelist. Incurable coffee geek. Hipster-friendly food scholar. Certified pop cultureaholic. Friendly coffee junkie.

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