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Q&A About Goodman Furnace Filters

Question: What 4" filter should I get for my Goodman GMH950703 furnace?

Answer: According to the user manual, the standard filter for the Goodman GMH95 series depends on the width of the cabinet. I'm including those specs below -- but these are for 1" thick filters. There's a good chance that you can just measure the cabinet width, and then substitute a "x4" for the last "x1" in the required filter. For example, if your cabinet is 21" wide, you would purchase a 16x25x4 instead of 16x25x1. However, it's also possible that your furnace has a separate air cleaner. (Many air cleaners use the thicker 4" filters.) If that's the case, your best bet is to remove the current 4" filter, and check it for measurements. If the measurement isn't printed, just measure it with a tape measure, and round up to the nearest inch for each dimension.

Furnace Filters for the Goodman GMH95

Air Flow Configuration Cabinet Width Filters
Upflow 17-1/2" buy now on amazon 1 14x25x1 filter
(bottom air return)
Upflow 21" buy now on amazon 1 16x25x1 filter
(bottom air return)
Upflow 24-1/2" buy now on amazon 1 20x25x1 filter
(bottom air return)

Question: How do you change the filter on the Goodman GKS9 furnace?

Answer: The filters should be located at the side on the bottom of your Goodman GKS9.

The filter you need depends on both the configuration of the furnace and the width of your furnace's cabinet. See the chart below.

Furnace Filters for the Goodman GKS9

Air Flow Configuration Cabinet Width Filters
All 17-1/2" buy now on amazon 1 14x25x1 filter
(bottom air return)
All 21" buy now on amazon 1 16x25x1 filter
(bottom air return)
All 24-1/2" buy now on amazon 1 20x25x1 filter
(bottom air return)
All All buy now on amazon 1 16x25x1 filter
(side air return)

Question: What size filter do I need for the Goodman GMH8 furnace?

Answer: The filter you need depends both on whether you have an upflow, downflow or horizontal furnace, and on the width of your furnace's cabinet. See the chart below.

Question: What filter for a Goodman GMS80703an

Furnace Filters for the Goodman GMS8

Air Flow Configuration Cabinet Width Filters
Upflow / Horizontal 17-1/2" buy now on amazon 1 14x25x1 filter
(bottom air return)
Upflow / Horizontal 21" buy now on amazon 1 16x25x1 filter
(bottom air return)
Upflow / Horizontal 24-1/2" buy now on amazon 1 20x25x1 filter
(bottom air return)
Upflow / Horizontal All buy now on amazon 1 16x25x1 filter
(side air return)

Question: I can not locate the filter on my GMS8 furnace

Answer: Page 21 of the installation manual covers changing the filter and its location.

Question: Does the Goodman GMT045-3 use a filter?

Answer: Yes the Goodman GMT uses filters. To find the right filter for your furnace measure the front of your unit's cabinet. Then use the chart below to find the filter that matches for that width.

Furnace Filters for the Goodman GMT

Air Flow Configuration Cabinet Width Filters
All 14" buy now on amazon 1 14x25x1 filter
(bottom air return)
1 18x25x1 filter
(side air return)
All 17-1/2" buy now on amazon 1 16x25x1 filter
(bottom air return)
1 18x25x1 filter
(bottom air return)
All 21" 1 18x25x1 filter
(bottom air return)
buy now on amazon 1 20x25x1 filter
(side air return)
All 24-1/2" 1 18x25x1 filter
(bottom air return)
buy now on amazon 1 24x25x1 filter
(side air return)
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