I have a Coleman Presidential 3 7900 series Gas Furnace that has 3 openings on the front panels for return air.
However, when I bought this mobile home, there were no filters on any of the 3 return air vents on the front panels.

My question is:
Do I need 3 filters for this unit, and if so where do I get them. It apprears that the filters will have to be 19 inches wide to cover the openings.
Appreciate your answer to this question.
HarryP

Yes, you need filters for sure.

You could re-duct things with a return plenum and one common filter housing, but it's a little hard visualizing without seeing it. Can you post some pics?

Whatever you do I suggest you clean the unit after you get filter(s) in place as it is probably filthy inside. If you have an A/C coil I'll bet its pretty dirty.

I had it cleaned the other day.

1.Do you know where I can purchase the filters for this furnace?

2. Do you know what filter I should ask for?

Thanks,
HarryP