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Our script found these filter sizes in the Amana AMS8 / ADSS8 source document's filter table: 10x20, 14x20, 14x24, 14x25, 16x25, 20x25, 24x24. This page is pending human review, so check the source excerpt on the page to see which size applies to your cabinet and return.
Auto-extracted · review pending Filter sizes auto-extracted from the manufacturer document.
| Sizes found in the source table |
|---|
| 10 x 20 |
| 14 x 20 |
| 14 x 24 |
| 14 x 25 |
| 16 x 25 |
| 20 x 25 |
| 24 x 24 |
Extracted by script from the linked document. Read the excerpt to see which size applies to which cabinet or return.
General guidance (not from this manual): check monthly and replace 1-in. filters every 1–3 months, or follow the filter maker's guidance and your owner's manual.
Pull the old filter and read the size printed on its frame. Nominal sizes are rounded up: a 15.5 x 24.5 in. filter is sold as 16 x 25.
Your furnace manual lists the filter's dimensions, not its MERV rating. Higher-MERV filters restrict more air. Manufacturers such as Carrier recommend keeping the clean-filter pressure drop under 0.2 in. w.c. (ideally under 0.1). Lennox warns that an over-restrictive filter can trip the high limit in winter and freeze the coil in summer. If you want MERV 11–13, a 4-in. media cabinet is the usual route. Ask an HVAC tech to check static pressure. Nominal sizes are rounded: a filter labeled 16 x 25 x 1 actually measures about 15.5 x 24.5 x 0.75.
Manufacturer document for Amana AMS8 / ADSS8
Last checked 2026-10-25. Manufacturers revise documents. If your unit's label disagrees, trust the label.
AMS8 Minimum Filter Sizes
AMS8 AMS8 AMS8 AMS8 AMS8 AMS8 AMS8 AMS8
Model #s
0403A* 0603A* 0604B* 0804B* 0805C* 1005C* 1205D* 1405D*
(1) 16 x 25 (Side) or (1) 16 x 25 (Side or (1) 16 x 25 (2) 16 x 25 (Side) or (2) 16 x 25 (Side) or
Filter Size (in²)
(1) 14 x 24 (Bottom) Bottom) (Side or Bottom) ¹ (1) 20 x 25 (Bottom) (1) 24 x 24 (Bottom)
Note: Other size filters of equal or greater surface area may be used; filters may also be centrally located.
¹ Use 2- 16 X 25 filters on side returns or 20 X 25 filter on bottom return if furnace is connected to a cooling unit over 4 tons nominal capacity.
ADSS8 Minimum Filter Sizes
Model #s ADSS80403A* ADSS80603A* ADSS80804B* ADSS81005C*
(2) 14 x 20 or (2) 14 x 20 or
Filter Size (in²) (2) 10 x 20 or (1) 14 x 25 (Top Return)
(1) 16 x 25 (Top Return) (1) 20 x 25 (Top Return)
Note: Other size filters of equal or greater surface area may be used; filters may also be centrally located.Our script found these filter sizes in the Amana AMS8 / ADSS8 source document's filter table: 10x20, 14x20, 14x24, 14x25, 16x25, 20x25, 24x24. This page is pending human review, so check the source excerpt on the page to see which size applies to your cabinet and return. 10 x 20; 14 x 20; 14 x 24; 14 x 25; 16 x 25; 20 x 25; 24 x 24.
General guidance (not from this manual): check monthly and replace 1-in. filters every 1–3 months, or follow the filter maker's guidance and your owner's manual.
Filter sizes are nominal (rounded). A filter sold as 16 x 25 x 1 actually measures about 15.5 x 24.5 x 0.75 in. Buy by the nominal size printed on the frame.
Manufacturer document for Amana AMS8 / ADSS8 (https://cdn.daikincloud.io/PIM/Assets/Documents/SS-AMS8.pdf), last checked 2026-10-25.