It is crucial to frequently replace and properly dispose of your old filters to keep the air in your home or business clean. Before purchasing a replacement filter, refer to your owner's manual to identify the correct number or size of your filter, which should also be printed on the side of your existing air filter. Alternatively, measure the filter yourself for accurate sizing.

The arrow on your air filter should point towards the blower in your HVAC unit. If the filter is installed in the wall or ceiling, the arrow should point towards the wall or ceiling. Putting the air filter in backwards will cause the filter to collapse and potentially damage your HVAC unit.

Our furnace filters are made of moisture-resistant cotton fibers and sturdy paperboard, featuring an electrostatically charged pleated design to capture more harmful airborne particles, outperforming standard fiberglass filters.

Changing your air filters regularly ensures your home has cleaner, healthier, and fresher air, which can help improve allergies and asthma. Timely filter replacement can also help your system last longer, require less maintenance, and reduce your energy bill.

The MERV (Minimum Efficiency Reporting Value) rating of an air filter indicates its ability to capture larger particles between 0.3 and 10 microns (µm). MERV 8 filters are effective at trapping 90% of the airborne particles found in the average home, MERV 11 filters are effective at trapping 95% of airborne particles, and MERV 13 filters are effective at trapping 98% of airborne particles in a typical home.

The appropriate MERV rating for your home will depend on your heating and cooling system and the size of your home. You must strike a balance between removing the most airborne contaminants while still maintaining adequate airflow.

Filters should be changed every 30 to 90 days, depending on the type and efficiency of the filter. During peak winter and summer months, it's recommended to change your air filter every month.

Some signs that you need to change your furnace's air filter include: your home is dustier than normal, your furnace is running longer or more often than normal, your home isn't reaching your desired temperature, your air filter is visibly dirty, and your furnace is noisier than normal.

LotFancy is committed to providing practical household products that keep your home running efficiently and save you money. Founded in San Francisco in 2009, our product offering has grown to 1000+ items found in millions of homes across the United States and abroad.

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