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Welcome to Clear the air Inc. the webs premier seller of quality replacement furnace filters.  You will find that we have the largest selection of products in all the hard to find sizes.  And if you donít find the size you are looking for just call us for a custom quote.   

Please use the links below or to the left to help narrow your search.  First select the type of filter, then the quality level (see MERV Chart), select your size, and we will ship them to your door for free. 

Clear The Air offers a 100% Satisfaction Guarantee - If you're not satisfied with a product you purchase from us you can return for a full refund - no questions asked. 

1" Pleated Filters 2" Pleated Filters 4" Pleated Filters
Aprilaire Filters Honeywell Filters Trane Perfect Fit Filters
Trion "Air Bear" Filters White Rodgers Filters

Merv 8 4" Furnace Filter 4" Merv 8 Furnace Filter (6 Pack)

Clear The Air Merv 8 filters effectively remove 85% of airborne particles. Our Merv 8 filter eliminates allergens such as dust, pollen, mold spores, and pet dander. Our advanced pleat technology provides less air flow resistance, with higher efficiency. Our Merv 8 standard capacity pleated filters are offered in ASHRAE 52.1 and 52.2 (MERV) ratings and are built to withstand rigorous conditions.

Merv 8 High Capacity 4" Furnace Filter 4" Merv 8 HC Furnace Filter (6 Pack)

Clear The Air Merv 8 filters effectively remove 85% of airborne particles. Our Merv 8 filter eliminates allergens such as dust, pollen, mold spores, and pet dander. Our advanced pleat technology provides less air flow resistance, with higher efficiency. Our Merv 8 high capacity pleated filters are offered in ASHRAE 52.1 and 52.2 (MERV) ratings and are built to withstand rigorous conditions.

The high capacity design contains more pleats per foot resulting in a longer filter life.

Merv 11 4" Furnace Filter 4" Merv 11 Furnace Filter (6 Pack)

Clear The Air Merv 11 filter Removes 91% of airborne particles.  Our Merv 11 filter eliminates allergens such as dust mites, pollen, mold spores, pet dander, dust, and smog.  Our advanced pleat technology provides less air flow resistance, with higher efficiency and lower pressure drop allowing air-handling systems to stay cleaner and operate more efficiently. This filter is Ideal for allergy sufferers.

Merv 13 4" Furnace Filter 4" Merv 13 Furnace Filter 6 Pack

Clear The Air Merv 13 filters are the best possible choice in residential HVAC filtration. Hospital-quality, advanced pleated technology, Our Green pleat is a cost effective means of upgrading your air quality, while maintaining low pressure drop and long service life. It removes 96% of allergens, fine particles, dust, pollen, dust mites, bacteria, mold spores, pet dander, smoke, gases & odors. This filter is the ideal choice for asthmatics.

Performance and comparision details
Clear the air furnace filters are the highest performing air filters you can buy.  We have developed a performace chart so you can easily see how our products compare with other leading brands and what a great value they are.  This performance chart is also a great tool when deciding what performace level is right for your home. 
Click on the link or the image below to open or print the PDF for a closer look