Our 4-inch furnace air filters provide high levels of filtration without putting strain on your HVAC system. Their pleated construction gives them substantial advantages over fiberglass filters, and they outperform comparable MERV 8 and MERV 13 filters found in most residential and commercial systems. Our filters can instantly improve the air your family breathes, and we have one for almost any residential or commercial heating and cooling system.

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  • Filtration And Circulation

    Air filters thicker than 2 inches can be found in some heating and cooling systems in schools, apartment buildings, industries, and homes with pets and occupants with health considerations like allergies or sensitive skin. Thicker filters clean the air better and can significantly reduce the amount of airborne allergens, dust, and other contaminants that may enter your home.

    Our MERV 8 and MERV 13-rated 4-inch air filters fit most standard HVAC systems and can trap airborne debris and pollutants before they reach your skin, furniture, or food.

  • Cleaning Dirty Air

    Making effective air filter products is our passion at FilterSwift. We use pleated designs that are sustainably engineered to provide maximum filtration and airflow. Our SwiftAir 8 and SwiftSelect 13 filters are MERV 8 and MERV 13 compliant (respectively), can help your HVAC system be more efficient, and are made to last longer than comparable fiberglass filters.

    FilterSwift is committed to fast shipping and customer satisfaction. Need help finding a filter? Contact us now. We’ll make sure you find the filter you need.

  • How Does Your Filter Look?

    It’s easy to overlook some chores. Don’t make changing your HVAC filters one of them.

    If it’s been a while since you changed the 4-inch furnace air filters in your home or commercial buildings, we can help. Our filters are more efficient than comparable fiberglass filters, last longer, and may help lower energy bills and reduce maintenance costs.

    Buy more, save more. Buy multiple 4-inch filters today, and save 54% on your order when you purchase a dozen filters or more. Order now!