I know this is probably off-topic, but I couldn't really decide where to place it.
1st off.. I'm a homeowner, and I know the rule about no diy.. but this is not hvac diy, so I'm not sure if it is ok or not. I could not find anything like this for sale or anyone offering this.. so. I'm asking this here, because well.. you guys know about this stuff If this is crossing the diy line, let me know.. and I apologize and will delete my post.
I've recently put a vapor barrier in my crawl space... and want to do more to keep the humidity down in it. I do not want to seal it. There are only 4 vents in it and I live in the hot/muggy southeast.
Here's my plan.. This is mostly something put together with stuff laying around. I am putting in some new grills with 12volt computer fans, they are wired to a humidistat for outside the crawlspace and a dehumidistat for inside the crawlspace.
The fans will come on when the crawl-space reaches a certain humidity level *IF* it is less humid outside.
My question is should I also take inside or outside temperature into account? I realize this will probably want to kick on when the outdoor temperatures are at their peak and the outdoor humidity is at its lowest. Seems like this would increase my cooling load in the house some.