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Old 06-18-2016, 08:57 AM   #11
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If you could run it with the cover off,,, where would the air go ???
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Old 06-18-2016, 12:29 PM   #12
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If I run it with the cover off, the air blows straight down. When I cut holes in the cover to mount the louvers, one of the louvers is directly under the blower so air passes right through it and blows straight down when that louver is opened.
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Old 06-18-2016, 08:16 PM   #13
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Where is a good place to get filters. Mine is very then sponge like material. It can easily be out of place.
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Old 06-18-2016, 08:44 PM   #14
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Brilliant idea! I'm going to order the louvers and do the same mod.

My camper was made in 2013 and has the exact same ceiling cover. So it's not just the older units that are like this. :-)

Thanks!

Mike
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Old 06-18-2016, 09:05 PM   #15
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Mine uses a sponge foam filter. You can get them at any hardware store and cut it to size.
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Old 06-19-2016, 05:48 PM   #16
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Personally I think that was a darn good idea, cleverly and neatly constructed. On my unit, which is a ducted model, the cold air comes out next to the return air inlet. I got to thinking about this and wondered how much of the cold air goes right back into the return side with the dump open. First I did a smoke test done with a small smoke bomb bought at a local safety supply store. I was really surprised at how much cold air was going right back into the return grill. I took an ordinary manila file folder and taped it between the return and outlet grills. There was no doubt that the A/C performed better with more cold air being sent into the room. With the A/C grill set in the ducted position this is not a problem. Another smoke test proved that the cold air was coming from the registers in the camper and going back into the return air grill. I'm thinking of making something I can attach to the inside cover of the A/C when we first set up to help cool the TT down faster.
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Old 06-22-2016, 04:37 PM   #17
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My A/C/ cover looks identical to the OP's, and I WILL be doing this mod!

Pop
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Old 06-28-2016, 08:20 PM   #18
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Thank you so much for this. Just got mine installed, tested it out, and the DW told me to give you a big smooch! :-) What a difference that makes!

Mike


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Old 06-29-2016, 12:16 AM   #19
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Great idea to help your unit out. The thought never even crossed my mind. I'm so anal about checking everything with a moisture meter after every time it rains and keeping the darn thing clean sometimes I overlook the smallest things. After reading this I discovered I have the sliding vent like the pic in the 3rd post. And although while open it cuts most of the airflow off to the rest of the hauler, it gives quite a nice cool down to the main area. Once the temp felt down I just closed her back up and sent the air on its normal path. Thanks for sharing your idea!
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Old 06-29-2016, 01:14 AM   #20
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Finished mine today. Didn't take any photos, but it looks identical to these.

GREAT mod, and I highly recommend it for non-ducted rooftop RV A/C units.

Made a BIG difference in airflow!

Pop
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