Venting the Cabin of Moisture

[tippedkoala]

Before I cut a hole in the roof for a fan vent, thoughts on reversing the direction of the rear fan so it sucks instead of blows? Maybe the front HVAC if the rear doesn't draw fresh air. Thinking I could just reverse the polarity on the fan?

 

[sk66]

The rear heater and AC systems only recirculate. IDK about reversing the fan's polarity, but it's feasible with a lot of DC motors.

 

[speedyquest]

I don't know your situation or where you live (both important factors) but for myself living in my L300 full time a combination of keeping the front windows cracked at night and not keeping closed up constantly is plenty to keep the inside of the van comfortable and not a swamp. Having rain guards on the front windows is almost necessary so you can keep those windows open no matter what weather, and if possible protecting your side windows from rain as well.

Currently my van has rain guards and sliding rear windows and I don't feel like I need a roof vent.

Just my 2 cents.

Allen

 

[Growlerbearnz]

Both fans are centrifugal fans, they only move air in one direction even if running backwards (though they're really inefficient in reverse).

The van's interior shouldn't be any more damp than the outside air though. How's the extra moisture getting in? I'd fix that problem and see how things go.

 

[deskinthewoods]

Heavy breathing…

 

[Growlerbearnz]

Heavy breathing…

You have to admit they're pretty sexy vans.

 

[oldrustythevan]

Install a roof fan, and if your roof was as rusty as mine it cuts out roof repair

 

[greendel]

On my previous van, I fitted 12V computer fans into the tailgate trim and the air vented through the drain holes in the bottom of the tailgate. I need to do the same on the current van to help remove heat from the fridge and (hopefully) reduce some of the dust that finds its way into the tailgate via the drain holes.