Derek Cole explains that your AC already dehumidifies while cooling. A separate dehumidifier is only needed in sealed crawl spaces. An oversized unit, like a 5-ton AC on a 3-ton ductwork, short-cycles and fails to remove moisture properly, leaving the air clammy.
Everybody needs a dehumidifier in their homes. I'm not being sarcastic, but it's called your air conditioner. That is a dehumidifier. That's what makes you feel comfortable when it's nice and muggy and hot outside. You feel nice and cool inside because you're removing the heat from the home, but it's also dehumidifying at the same time. So what we run into a lot in this area is you do need a dehumidifier in the crawl space if it's sealed. Now, if it's not sealed, you don't need a dehumidifier because then you're dehumidifying the whole world, which is not really going to work out in your favor. You're just going to run, run, run, run. But if your home is properly insulated, properly sized unit in your house, then your AC should reach that set point and should keep you comfortable. It's something you notice, and the reason we're getting this question, something you notice a lot more in the summertime when it's hot and muggy. Versus the wintertime when it's, you know, humidity is kind of like a blanket. Humidity keeps you nice and toasty. So in the wintertime, obviously we don't have many complaints about, you know, it's a little humid in here. No, you don't hear that call, but you do hear it in the summertime. So you need to make sure your unit is sized properly for the home. I've gotten quite a few questions of, you know what, I like to keep my home at 68. Can I just put a 5-ton unit in and be done with it? No, because for one reason, you have a 3-ton system and you have a 3-ton duct system. So you put a 5-ton unit on a 3-ton duct system, you still have a 3-ton duct system. So it makes no sense to do that. Plus, if the unit is too big for the home, it's not going to probably dehumidify. Yes, it's going to hit that temperature set point in the home, but you're not going to be comfortable because it's going to come on and off, on and off. You've been to those bigger commercial buildings or or courthouses where it feels kind of cold and clammy, it's kind of— it's because it's not dehumidifying. That's why you're getting that feeling. So you don't want that feeling inside your house. So yes, use your dehumidifier, your air conditioner in your home, but it needs to be properly sized so you're comfortable.
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