An ERV transfers about 50% of the moisture from the wet air stream to the dry air stream. Exhausting wet air while introducing dry air will wet the dry air and dry the wet air. This defeats drying wet fresh air. An ERV helps dry damp fresh air when you exhaust dry air. They remove about 50% of the moisture. You need dehumidification to remove the other 50% or the inside space will get as wet as outside after 3-4 air changes. A couple fish tanks are easy to dry with a high eff. properly sized dehumidifier. How many gallons of water are added to the tanks per day? What climate are you in? A possible solution is to use a ventilating dehumidifier to introduce 50-100 cfm of air to the rest of the home, while maintaining 50%RH throughout the home. Exhaust 50-100 cfm from the fish tank area. The dry air from the home will move through the fish tank area keeping it dry. Keep in mind, drying the space will eliminate most of the odors in the basement. TB
Originally posted by reef tank guy
I have moisture problems in the basement that aren't being solved by a dehumidifier. The problem is compounded by the couple aquariums I have down there.
I'd like to pump out the stale humid air out of the basement, and pump fresh air into the rest of the house.
My concern is humidity. The summers here are pretty humid. I don't want to be pumping more humidity into the house. Will either an ERV or an HRV dehumidify the incoming air?
I had my local guy here yesterday woking on a quote to replace my old leaky a/c with a heat pump. He suggested an ERV but was a little shaky on what would happen with the humidity if I"m pumping cool humid air out of the basement, and feeding the ERV with warm humid air from outside.