Since 1947, Trion has provided quality products for the commercial, industrial, and residential markets, which are engineered specifically to provide a clean, safe, and comfortable indoor air environment. Dependable performance, superior product quality, and excellent customer service are essential to our long-term success. Trion has developed a level of technical expertise that allows us to create innovative products and cost effective solutions to serve our customers' air cleaning problems worldwide. Our products can be found in homes, offices, factories, clubs, hospitals, and sea vessels, just to name a few.

In 1996, Trion added Herrmidifier to the company's capabilities, the well known manufacturer of commercial, industrial, and residential humidification solutions. Later in 2003, Envirco Corporation was added to Trion to provide clean air technologies to industries requiring ultra-clean environments.