Environmental control equipment made better in the heart of the USA.

We design and manufacture the most powerful, most energy efficient commercial dehumidification equipment on the market. We also partner with people in an array of industries, sharing our expertise to help our customers create the most productive environments possible.

Get to know the team.

No matter what you do, we can help you craft a customized solution to fit your needs.

Quest: A division of Therma-Stor

Founded in Madison, Wisconsin, in 1977, Therma-Stor has been dedicated to making the most durable, high-performance residential and commercial climate equipment for more than 40 years.

We're on a quest for the best of the best.