American Standard furnace filter replacement
Find the exact replacement filter for your American Standard HVAC system. All sizes available in MERV 8, 11, and 13.
Most common American Standard filter sizes
Don't see your exact size?
Use the size finder — enter your exact dimensions and we'll show you all available options.
Use the size finder →About American Standard air filters
American Standard HVAC systems use standard pleated air filters in nominal sizes. The most common American Standard filter sizes are 20x25x1, 16x20x1, 16x25x1, though exact sizes vary by model. Always check your existing filter or your owner's manual to confirm the correct size before ordering.
For most American Standard residential systems, a MERV 8 filter provides the right balance of filtration and airflow. Homes with pets or mild allergies may benefit from MERV 11. MERV 13 provides the highest filtration but may slightly reduce airflow on some systems — check your manual if unsure.
How often to change your American Standard filter: Every 90 days for a 1-inch filter, every 6–12 months for 4-inch and 5-inch media filters. Set a free reminder and we'll email you when it's time.