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05-14-2022, 09:16 AM
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#1
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Montana Fan
Join Date: May 2018
Location: Bedford
Posts: 307
M.O.C. #21728
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MaxxAir fan NEW install
I’m thinking of installing a MaxxAir fan in our bathroom. We have a 3931FB, so it would require cutting an opening in the roof.
Has anyone done a similar install? How did you find the location to cut so you didn’t cut through roof supports, AC ducts, wiring, etc. How did you tie into the existing wiring? Did you add a control panel at the wall or use a remote controller?
I searched around but didn’t find anything about the subject.
UPDATE: Would it be easier to use the existing ceiling light/vent opening?
__________________
Member #21728
2019 3931FB
2017 F350 6.7 Powerstroke SRW
B&W Companion Slider 20K
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05-14-2022, 12:56 PM
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#2
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Site Team
Join Date: Apr 2017
Location: Colorado Rockies
Posts: 1,914
M.O.C. #19755
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I'm surprised your bath does not have a fan installed at the factory. If it does, changing to a Maxxair should be easy; pull out the old one, put in the new one. If it does not, the job will be more challenging. I want to put one in our bedroom but have been unable to find a clear location between the roof joists. I thought about pulling down the ceiling panel and open everything up, but was told they are glued in place and would break apart; not to mention trying to put them back up. I had a shop look at it and they agreed, no good place to put it. Finally decided it is easier to open the tiny windows.
I used blue tape to mark the joists (I think they were 12" on center, but it's been awhile). I started by pulling out a speaker and feeling around for a joist and then marking them. You will have to make sure there are no AC ducts in the area. Also, get on the roof and look for vents. Finding 12V should not be too much of a problem. I was going to use a remote control fan.
Good Luck
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Scott & Alta
2017 Montana 3160RL, Legacy, Onan 5.5Kw, Solar
2022 F-450 Lariat Ultimate
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05-14-2022, 01:51 PM
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#3
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Montana Fan
Join Date: May 2018
Location: Bedford
Posts: 307
M.O.C. #21728
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Thanks scottz. We have a combination LED light/exhaust fan in the bathroom. l'm going to pull the cowling panel around it to check if i cant swap it out with the MaxxAir.
__________________
Member #21728
2019 3931FB
2017 F350 6.7 Powerstroke SRW
B&W Companion Slider 20K
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05-15-2022, 12:35 AM
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#4
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Montana Master
Join Date: Dec 2021
Location: Northeast TX
Posts: 939
M.O.C. #30262
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I believe most units are industry standard 14" enclosures. Ours had the small 4" fan in the opening in the bathroom. I pulled down the interior trim, then pulled up the Dicor and housing screws on top of the roof. After unwiring the small fan unit, the entire assembly was replaced with a 10 speed MaxxAir fan unit with hand held remote that I mounted by the door to the bathroom. This was the first upgrade made to our fiver. Hope this helps out some. If any other questions, let us know.
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Lee, Edith, Lil' Bit & Cuddles
22 MHC 331RL, Surge Guard 35550, SumoSprings, Kodiak disc brakes, 412Ah Lithium, Gen 3 Goosebox, Sailun 85s
22 Ram 3500 CC DRW 6.7 CTD Herrin Hauler Classic Bed, 45 gal AUX tank
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