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Old 09-10-2021, 09:15 AM   #1
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Wolf pup heater issues

2021 wolf pup with suburban heater of course. Starts up and runs but most of the heat seems to be coming out the exhaust vent outside! There is some heat coming inside but not as hot as what is being exhausted! I'm curious if this is happening to everyone and it's just the way this thing works. Wouldn't be surprised.
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Old 09-10-2021, 11:41 AM   #2
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Exhaust temp is always way higher than the inside vent temp. What you are experiencing is normal.
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Old 09-10-2021, 12:47 PM   #3
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Exhaust temp is always way higher than the inside vent temp. What you are experiencing is normal.
Yep, RV furnaces are not very efficient.
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Old 09-11-2021, 08:50 AM   #4
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Yeah Im just figuring that out. It's absolutely crazy because if you turn the thing around and have the exhaust heat coming inside the trailer it would heat the thing up in like 2 minutes flat! Oh well, it is what it is. Thanks for your reply.
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Old 09-11-2021, 01:41 PM   #5
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Uhh...yeah

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Originally Posted by Gargie View Post
Yeah Im just figuring that out. It's absolutely crazy because if you turn the thing around and have the exhaust heat coming inside the trailer it would heat the thing up in like 2 minutes flat! Oh well, it is what it is. Thanks for your reply.
Uhh...yeah, but it would also fill up the inside with carbon monoxide, carbon dioxide, water vapor, and other unhealthy combustion products.

The design is pretty simplistic. There are two separate, completely isolated air circuits. A single motor with a squirrel-cage impeller on each end forces air through both circuits.

Air comes in one of those two outside vents and is mixed with propane and ignited inside an enclosed "firebox." The combustion products are exhausted out the other vent.

Air comes in the interior furnace return grille to a "plenum" which surrounds the firebox. The air is warmed as it passes over the firebox and then forced through the vents.

This is really the same scheme as the gas-forced air furnace at your house. Because of the space constraints in an RV, the heat exchange is a lot less efficient.
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Old 09-11-2021, 05:16 PM   #6
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Yeah Im just figuring that out. It's absolutely crazy because if you turn the thing around and have the exhaust heat coming inside the trailer it would heat the thing up in like 2 minutes flat! Oh well, it is what it is. Thanks for your reply.
Yup, that and the carbon monoxide!

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Old 09-11-2021, 05:23 PM   #7
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Originally Posted by Gargie View Post
2021 wolf pup with suburban heater of course. Starts up and runs but most of the heat seems to be coming out the exhaust vent outside! There is some heat coming inside but not as hot as what is being exhausted! I'm curious if this is happening to everyone and it's just the way this thing works. Wouldn't be surprised.
Check your ducting . could be many places where heated air is lost and not making it to inside the trailer . they use cheap drying hose lose lots of heat and flow .
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