I have a Coleman 7900 series gas furnace and need to replace the filter..
Could you please tell me where I can purchase one?

Is this in a mobile home? If it is go here to buy a filter. You can post to the list under Coleman and they will tell you which one you need and how to make your purchase. Those filters can be difficult to find.


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Does the filter you are re-placing have the size written on it?, if not get out the old ruler and measure

The filter is a piece of 1/4 to 3/8 inch foam style. The stuff they sell at the stores is always to short to cover the opening so you have to get one from a mobile home place. They are washable and last a long time if not torn.