Ed White wrote: So, as indicated I would do, I did call Fan-Tastic Fans today to ask about the Maxxair covers. I got more or less the same story others have reported, that placing a Maxxair cover over the vent cuts the airflow by around 40%, which, the Fan-Tastic rep says, significantly reduces the ability of the fans to move air through the trailer. I was told that the rain sensor is very sensitive, so there should never be a problem unless the owner has inadvertently turned on the "rain sensor overide". I was also told that the vents can be set to remain slightly open, which allows air flow, even in the rain, and if Fan-Tastic thought covers were a good idea they would be selling them. I was encouraged to try the fans without covers before going ahead and fitting Maxxairs.
Bottom line, I have my doubts that I will be satisfied without installing Maxxairs, but I'll give it a try for a few months once the trailer arrives.
Thanks for all the input.
do a search on problems with those rain sensors. they have been posted before. I have used the standard type covers over fantastics and they have worked fine. I just use the fantastics on low speed for getting some air circulation and have no problem.
bumpy
It depends on which MaxxAir model you use if it impedes air flow or not. If you use the small boxy covers, they will impede the air flow. If you use the model 800 that looks like it exhausts downward behind the vent it can't impede air flow because all that's in it are 2 or 3 blades to direct air flow and a 1/4" mesh screen to keep out the critters. The exhaust exit hole is at least 12" in diameter and all it has over it is the screen.
I use the MaxxAir model 800 for my covers and get the one without a fan motor in it. I've had two on both my last two trailers and there's been no problem with restricted flow at all.
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