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Can I Wash My Air Filter?

Residential air filters are designed to remove unwanted particles from the air in your home. These particles can include dust, dirt, pet dander, mold spores, allergens, bacteria, and viruses. Air filters work by pulling in air from your home and passing it through a filter material that captures these particles. The filtered air is then returned to your home, providing you with cleaner, healthier air to breathe.

There are several types of residential air filters available, including fiberglass, pleated, activated carbon, and HEPA filters. It's important to choose the right air filter for your home and to replace it regularly to ensure that it is working effectively. This will help to improve the air quality in your home and protect your HVAC system from damage caused by dirt and other debris. Each type of filter has its own specific features and benefits, and the best one for your home will depend on your specific needs and preferences.

When shopping for HVAC filters from FilterKing, you’ll find many choices. Fiberglass filters are the most basic type of air filter and are often used in furnaces and air conditioning systems. They are made of thin layers of fiberglass fibers that are woven together and are designed to trap larger particles, such as dust and dirt. These filters are relatively inexpensive and easy to find, but they are not very effective at removing smaller particles, such as mold spores and pet dander, from the air.

Pleated air filters are a step up from fiberglass filters in terms of their effectiveness at removing smaller particles from the air. These filters are made of a thin, pleated material that is folded and accordion-like in appearance. The pleats provide a larger surface area for trapping particles, making them more effective at removing smaller particles from the air. Pleated filters are more expensive than fiberglass filters but are still relatively affordable and widely available.

Activated carbon filters are made of a porous material that is treated with oxygen to create a highly absorbent surface. These filters are particularly effective at removing odors and gasses from the air, making them a good choice for people who are sensitive to certain odors or who live in areas with high levels of pollution. Activated carbon filters can be more expensive than other types of filters and may need to be replaced more frequently.

HEPA filters are the most effective type of air filter at removing particles from the air. They are made of a fine mesh material that is able to trap particles as small as 0.3 microns in size, including allergens, bacteria, and viruses. HEPA filters are often used in hospital settings and are highly recommended for people with allergies or respiratory issues. However, they can be expensive and may need to be replaced more frequently than other types of filters.

Once you find the right air filter, you’re not finished yet. While it isn’t a lot, there is a bit of maintenance involved. One common question many homeowners ask is “Can I wash my air filter or do I need to buy a new one?”

We have good news for thrifty homeowners looking to save as much money as they possibly can. Yes, it is possible to wash certain types of air filters. However, it is important to note that not all types of air filters are suitable for washing, and it is important to follow the manufacturer's instructions for cleaning and maintaining your specific type of air filter. That’s why it is important to know and understand which type of filter you are buying beforehand. Consider the following:

Fiberglass air filters are not suitable for washing, as the fibers can break down and become damaged when wet. These filters should be replaced when they become dirty or clogged.

Pleated air filters can typically be washed, as long as they are made of a washable material. 


To wash a pleated air filter, follow these steps:


Step #1: Remove the filter from your HVAC system and place it in a well-ventilated area.


Step #2: Mix a solution of mild detergent and warm water in a large bucket or tub.


Step #3: Gently scrub the filter with a soft-bristled brush to remove any dirt or debris. Be sure to scrub both sides of the filter.


Step #4: Rinse the filter thoroughly with clean water to remove any soap residue.


Step #5: Allow the filter to air dry completely before replacing it in your HVAC system.


Step #6: Activated carbon filters are not typically washable, as the porous material can become damaged when wet. These filters should be replaced when they become dirty or clogged.



HEPA filters are not suitable for washing, as the fine mesh material can become damaged when wet. These filters should be replaced when they become dirty or clogged.

It is important to note that washing an air filter may not completely remove all dirt and debris, and it may not restore the filter to its original level of effectiveness. In general, it is recommended to replace air filters every three to six months, or more frequently if they become visibly dirty or clogged. Using a dirty or clogged air filter can reduce the efficiency of your HVAC system and may cause it to work harder, which can lead to increased energy costs and shortened lifespan of the system.

In summary, while it is possible to wash certain types of air filters, it is important to follow the manufacturer's instructions and to be aware that washing may not completely restore the filter to its original level of effectiveness. It is generally recommended to replace air filters every three to six months to ensure that your HVAC system is working efficiently and to maintain good indoor air quality.

When you shop online for air filters, you may find that they are so reasonably priced that you do not need to wash and reuse them. If you want to and your filter is the right kind, you certainly can though.