4-inch Air Filters
Find the perfect size home air filter to replace your old air conditioning filters. Your home’s AC filter should be replaced every 2-3 months on average.
Let our experienced staff to help answer any questions you may have. Contact us now online or call us at (855) 435-9600 and we will do our very best to assist you in selecting the right filter for your individual needs. We want to earn your business and we guarantee your satisfaction!
Take advantage of our quality products, vast selection, low prices, and enjoy FREE SHIPPING on every air filter order within the Contiguous USA.
Search Air Filters by Size
-
12x24x4 (3)
Our 12x24x4 pleated filters are 100% made in the USA. Buying direct from the largest manufacturer in the Midwest allows you to get great low prices and fast, free shipping. For those with mild allergies, we recommend a MERV 8 rating. Moderate or seasonal allergies indicate the use of a MERV 11 filte... Read More... -
16x20x4 (3)
Our high-performance 16x20x4 pleated air filters are designed to provide excellent protection for your heating and air-conditioning system. Additionally, you will be cleaning fine dust particles, pet dander, mold spores, and pollen from your air to improve your indoor air quality (IAQ). Your 16x20x4... Read More... -
16x25x4 (3)
US Home Filter 16x25x4 pleated air filters are designed for high-performance, allowing a large volume of airflow so your HVAC unit can operate efficiently. As with all orders, we will send these to you quickly with free shipping. Use our Read More... -
20x20x4 (3)
US Home Filter's 20x20x4 pleated air filter traps and remove fine particles from the air in your home or business. Our filters will help protect your heating and air conditioning system and allow high airflow without causing strain on your unit. All of the products we manufacture are 100% made in th... Read More... -
20x24x4 (3)
US Home Filter makes and ships 20x24x4 air filters from our facility in Belton, Missouri. This central US location provides a fast shipping transit. Compare our MERV ratings to determine the best solution for your home or business filtration needs. Whether you need great protection for your HVAC uni... Read More... -
20x25x4 (3)
US Home Filter manufactures 20x25x4 pleated filters with high-performance media to allow a large volume of air to flow through your HVAC system and keep your indoor air heated and cooled effectively. Additionally, you will be scrubbing the air from tiny allergen and dust particles to improve your ai... Read More... -
24x24x4 (3)
Our high performance 24x24x4 pleated air filters protect your air unit while trapping pollen, dust, mold spores, and dust particles. Compare high-efficiency 24x24x4 filters below and choose the best MERV rating to fit your filtration needs. Whether you need general system protection or a higher degr... Read More... -
25x29x4 (3)
US Home Filter manufactures five varieties of 25x29x4 air filters. All of which allow high airflow through the filter to help your HVAC system operate smoothly and efficiently. These air control units circulate and filter clean air in your home. Choose from MERV 8, MERV 11, MERV 13, and even Odor Co... Read More...