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Old 10-17-2021, 12:40 PM   #1
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Fumes coming into coach from furnace

Just purchased 1998 American eagle and as I was checking out furnaces got fumes in coach. Noticed a 2 inch hose running behind water compartment plate thru the water lines that was rotted out.my question is what does it do.
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Old 10-17-2021, 12:49 PM   #2
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Originally Posted by Dray55 View Post
Just purchased 1998 American eagle and as I was checking out furnaces got fumes in coach. Noticed a 2 inch hose running behind water compartment plate thru the water lines that was rotted out.my question is what does it do.

Welcome to iRV2.


Can't help with the 2" hose question. Is this a "water hose", thin wall flex hose (like heater duct), other?


A quick check to see if the combustion chamber of the furnace has a leak to the interior is to find a smoker. With furnace just cycled on (so fan running, but no propane/flame) have them blow smoke into the furnace intake on the side of the coach. If you smell cigarette smoke inside, time for a full furnace check or replacement.


This is a good 30 second check for anyone with a propane furnace as part of routine annual preventive maintenance.
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Old 10-17-2021, 12:58 PM   #3
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First off, Welcome to IRV2!

That hose probably goes to the wet bay to add heat there.
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Old 10-17-2021, 02:47 PM   #4
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Furnace combustion side is sealed ---no furnace fumes S/B inside the RV

Poor combustion (dirty burner etc) and open window can draw 'fumes' inside

Torn/broken duct would just be heated room air
*As suggested that 2" hose could be for heat to wet bay area
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Old 10-17-2021, 03:14 PM   #5
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Old 10-17-2021, 04:38 PM   #6
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Welcome to the forum.

You are joining a good group of friends here with good information to share. Read the various threads here and ask questions as they come up or add information if you can.

Good luck and enjoy the adventure!
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Old 11-01-2021, 09:35 AM   #7
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What you are smelling is probably burn off, from inactivity.
Open windows and exhaust fans let furnace run for awhile.
Close up then recheck.
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Old 11-02-2021, 08:04 PM   #8
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Hey thanks. After a little more looking I found robbers best way up in the exhaust tube had blocked completely off.and the hose is a heat source for water lines. Thank you for the help
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