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Old 09-07-2014, 08:05 PM   #1
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Question Furnace return air filter

Niebour just bought a 04 Alfa Gold MH and is checking everything and can not locate the return air filter for the furnuse. The book says " its located on the wall by the bed (rear bed) on the road side of the rig. There is no panel there for access to a filter. Has any See-Ya owner found this filter?

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Old 09-08-2014, 01:05 AM   #2
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I have owned 5 different motorhomes and have never seen a filter for the furnace.
Could be because I have never looked either. :-)

I would also be interested in hearing more about this.

I know my home has one and I check it every 3 months.

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Old 09-08-2014, 01:21 AM   #3
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Welcome to iRV2.

Because RV furnaces are air flow sensitive , the fan needs to move air over the "sail switch " to trigger the propane ignition cycle, anything like a filter in the system could , restrict air flow, and cause the furnace not to light.; or overheat once lit.
If , Alfa , was using a filter, they would be the only manufacturer that I know of that did.
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Old 09-08-2014, 07:08 AM   #4
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Thanks for your replies. The owners manual says there is one, and he is driving himself nuts trying to find it. I have heard of other rigs having a filter for the heating system but i have never seen one either. I'll relay to him on your information.
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Old 09-08-2014, 10:08 AM   #5
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The Alfa uses an in basement AC/heat pump unit. Winnebago also used this setup.

The return air filter is a house type filter ~16"x20". Mine is located under the bed. Look under the bed in your Alfa. Do not restrict the airflow to the filter. If the filter is not under the bed look in the floor above your AC in basement unit.

-Tom, W3TLN
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2005 Suncruiser 38R W24, no chassis mods needed 2013 Honda Accord EX-L 2008 Honda Odyssey EX-L

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Old 09-08-2014, 11:58 AM   #6
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Adding to Tom's comments, look for a mesh grill, mine is on the aft side of the bed platform.

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Old 09-09-2014, 07:47 AM   #7
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Thanks for this additional information. The one above the bed he found and cleaned, about 12" wide and 24" long. I guess this one is for the AC. I'll forward this info to him. And look under the bed more thoroughly. Fred or Tom would it be possible to have a photo of this location? this might help a lot.

Thanks again for your help.

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