About
Dri-Z-Air (now operating under the Rainer Precision name) was founded over 50 years ago in Seattle, Washington by J.W. Trosper. The company has been family-owned and operated since it was founded in 1948. Dri-Z-Air specializes in manufacturing salt-based dehumidifiers that absorb moisture from the air, preventing mold and mildew from forming in homes. Dri-Z-Air is incredibly proud to be made in the USA, even sourcing calcium chloride crystals from high-grade materials mined in the USA.
