Furnace Filters

Regularly changing your furnace filters can extend the life of your furnace, reduce maintenance costs, and help your unit run more efficiently. Buying furnace filter replacements from Factory Direct Filters can save you additional money with our bulk discount and free shipping. We offer furnace air filters in standard, hard to find, and custom sizes, as well as a range of MERV ratings to fit your needs. Additional features of our furnace filters include the following:

• Made of 100% synthetic media
• Highly efficient filtration
• Can choose from depths of 1 to 6 inches
• Optimal airflow with radial wedge pleat configuration
• Highly durable and moisture-resistant frame
• MERV 8, 11, and 13 allergy furnace filters available

If you have questions about what size furnace filter you need, how to measure it, or when to replace it, check out our Helpful Tips for answers.