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Old 10-15-2018, 02:53 AM   #11
Liza Powell
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Thanks everyone!
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Old 10-16-2018, 05:29 AM   #12
Pare
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Vents under stairs

I have a 2017 Cougar 341-RKI fifth wheel with the same under stairs vents. I was losing a great deal of a/c capacity cooling the front storage area. I simply closed them off with the solar window insulation. Wow...what a difference. Also, I decided to try it with the furnace on and it works fine. There apparently is sufficient fresh air entering the furnace area of the coach not to affect the furnace performance. However, when temps get well below freezing, I would open the vents up, since that is how the front compartment pipes receive their heat. Give it a try!
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Old 10-16-2018, 05:37 AM   #13
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" I decided to try it with the furnace on and it works fine. There apparently is sufficient fresh air entering the furnace area of the coach not to affect the furnace performance" I don't believe this is good advice. YMMV, but it vents there for a reason and the furnace needs that draw area. High temperatures and insufficient air supply will result.
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Old 10-16-2018, 05:41 AM   #14
jimthemosaicguy
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Basement vents to interior

I have similar air returns and noticed heat coming out even the i was running the a/c. Then i figured out it was happening when I ran the rooftop vent in the kitchen. I didnít block them off because they are there for a reason. Iíve just tried to minimize use of the roof vent.

Also, you might check the furnace manual cause I think there is a requirement about the size of return air vents needed based on the furnace capacity.
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Old 10-16-2018, 07:55 AM   #15
travelin texans
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Quote:
Originally Posted by notanlines View Post
" I decided to try it with the furnace on and it works fine. There apparently is sufficient fresh air entering the furnace area of the coach not to affect the furnace performance" I don't believe this is good advice. YMMV, but it vents there for a reason and the furnace needs that draw area. High temperatures and insufficient air supply will result.
I agree!
If you wanted to block them in the summer so not losing cool air would be ok, but to run the furnace be sure move them so it will draw warm air into the area of all the water lines & connections.
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Old 10-16-2018, 01:45 PM   #16
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That is exactly what I said in my original post. If camping in cold / freezing weather, do not block them off. The dealer said there are other air sources for furnace to work properly...but in freezing conditions, you risk burst pipes in that front compartment if vents are blocked shut.
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