HVAC specialist Derek Cole explains why a consumer dehumidifier won't fix a wet crawl space. You need to seal the space first, eliminate moisture sources, then install a commercial-grade unit. A dehumidifier alone is just a temporary Band-Aid.
Do not just install a dehumidifier because that's not the answer. It goes back to a few episodes ago. I want the cure, not the Band-Aid. A dehumidifier is kind of like a Band-Aid. You feel good about it. I'm doing something. Humidity feels a little better. You got a little placebo effect going on. You're saying, oh, it feels better in here. I got a dehumidifier. It's not. Dehumidifier is not helping you out. So seal the crawl space. Get the moisture out, put a dehumidifier in the crawl space, a commercial-grade dehumidifier, not the one you pick up at Lowe's and Walmart and it's got a little thing to plug it in. That's not going to help you out either. You need to properly address the problem, which is a moisture problem. So putting a dehumidifier in the space, unless your dehumidifier is so powerful it can dehumidify the whole state. Which is what you're doing. Because the only thing between the dehumidifier and the outside is a couple things of glass and a few walls, right? Nothing is going to stop the air from coming in. It's, it's kind of like putting it— in the wintertime, we talk about humidifiers. It's kind of like putting a humidifier in a room and saying that solves our problem. No, it doesn't. Just because a dehumidifier is in that room It doesn't mean the room is magically sealed off and no air from any other source can get in. So again, it's not going to work. You need to seal the crawl space. You need to put a dehumidifier in. Just a dehumidifier is not the answer.
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