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Old 01-25-2017, 11:35 AM   #1
2 Rivet Member
2002 25' Safari
Eugene , Oregon
Join Date: Aug 2016
Posts: 26
Maxx Air Fan for 21'

Hey Everyone,

I have a 21' 1994 Sovereign with two pop up vents, but no fans. I am thinking of purchasing and installing Maxxair 12V Roof Top Fan/Vent. My question is, should I install 1 or 2? I have two vents, but the trailer isn't that big. Would one pull out enough of the heat? Also, I'd have to run power to them. If anyone has done this before, is it a big job?

Also, does anyone have their best recommendation for fans? I'm not 100% sold on my choice.


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Old 01-25-2017, 11:49 AM   #2
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1964 17' Bambi II
Vintage Kin Owner
Schererville , Indiana
Join Date: Jul 2005
Posts: 2,631
Images: 19
I installed 3 in my 32' Avion. One in the bathroom is exhaust only. The other two have remote controls and can be open in the rain. They fold down when not in use. It wasn't difficult to install them, but I had 12v already run to them. The biggest deal was cutting the holes square (Avions have rounded corners on the vents). They really suck the air out, though, so I'm pretty sure one would be enough for your trailer. They can be reversed to blow air in as well. I really, really like them. I have a fantastic fan in my 17' Bambi II, but I like the MaxxAir with remotes better. They have a thermostat on them too. I actually used the remote when I got a little chilly in bed. Love it!Click image for larger version

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1964 Bambi II
1988 Avion 32S
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Old 01-25-2017, 11:57 AM   #3
2 Rivet Member
2002 25' Safari
Eugene , Oregon
Join Date: Aug 2016
Posts: 26
Thanks! That's great info. I had 2 fantastic fans in my first 25 and wasn't a huge fan. Have read really great things about the MaxxAir.

Do they have rain sensors? I currently have two MaxxAir covers (from previous owner) but am thinking of taking them off. Just curious if they have the same feature of auto turn off like the Fantastic Fan
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Old 01-25-2017, 11:58 AM   #4
2 Rivet Member
2002 25' Safari
Eugene , Oregon
Join Date: Aug 2016
Posts: 26
Never mind, I see that yours is the rain shield built in!
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Old 01-25-2017, 12:46 PM   #5
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1994 30' Excella
alexandria , Kentucky
Join Date: Aug 2004
Posts: 1,954
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I have two of the Maxx Air fans on our 30' trailer. The fans work well pulling air in/out during rainy days or traveling along the highway. I also leave them open during the summer months when the trailer is not being used so it can breathe on hot days.
They seem pull about the same cfm's as the Fantastic Fan.
Definitely install at least one, two if the budget allows.
I did the install work myself. The toughest job is removing the old vent and caulking. Use some Sikaflex self leveling caulk and stainless steel screws when installing.
Steve, Christy, Anna and Phoebe (Border Collie)
1994 Classic 30'11" Excella - rear twin
2009 Dodge 2500, 6 Speed Auto, CTD, Quad Cab, Short Bed
Hensley Arrow hitch with adjustable stinger
WBCCI # 3072
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Old 01-26-2017, 12:20 PM   #6
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Streamracer's Avatar
1986 25' Sovereign
Huntsville , Alabama
Join Date: Sep 2015
Posts: 170
Shouldn't be a problem if you are handy. Might have to trim the holes to fit the fan . You should be able to get power from the overhead light beside the vent. I did two on my 25'. Better to have too much as not enough.
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Old 01-26-2017, 09:47 PM   #7
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2007 25' Classic
1993 21' Sovereign
Elm Grove , Wisconsin
Join Date: Apr 2004
Posts: 54
I installed one MaxxFan in leau of the old pop-up vent in the front of my '93 21ft. Sovereign. Just open the other manual vent above the bed or crack a window. The fan has plenty of power to handle the interior volume of the coach. The design allows you to operate the fan during rainy weather, a big plus compared to the Fantastic Fan. You will love it!

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Old 01-27-2017, 09:56 AM   #8
2 Rivet Member
2002 25' Safari
Eugene , Oregon
Join Date: Aug 2016
Posts: 26
That's great! I didn't know I could pull power from the lights. That will work great. Thanks for the info
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Old 01-28-2017, 09:49 AM   #9
S/OS #005
2004 28' Safari S/O
Georgetown , Ontario
Join Date: Aug 2011
Posts: 58
Images: 3
We have 2 Fantastic fans in our 27' Safari W/Slideout; we run one pulling in, the other out & it keeps the trailer cool. BUT they are noisy & the one in the bedroom, we do not run overnight. Also, we had to put the outside covers on as the rain did come in as well as the sensor kept opening & closing them when raining which was annoying noise wise. I wonder about replacing the bathroom small fan with a Maxair but not certain if they fit in the same size opening. That fan in the bathroom is rather useless & again noisy.
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Old 01-28-2017, 11:51 AM   #10
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2014 25' Flying Cloud
Cuddebackville , New York
Join Date: May 2007
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One of the first things I do in my Airstreams is change the Bfs to MaxxAir fans. They work great- even when it's raining. Using one pulling in and the other exhausting moves a lot of air. Just make sure you're not drawing in near a plumbing vent. It will become very obvious if you do!

2014 25' Flying Cloud Rear Twin
2019 Ford Expedition Platinum
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