At Trotter Company, we only use the highest rated DVA (dehumidification, ventilation, air filtration) system. The Aprilaire 150 maintains a healthy 40% to 50% relative humidity in your closed crawlspace.

Aprilaire removes more than 95 pints per day with no buckets to empty, instead draining to sump pump or gravity drain! Trotter also offers the Aprilaire 400H, which will provide dry, clean, fresh air throughout your entire house!

Since 1929, More Than 100,000 Homeowners Have Trusted Trotter