Armstrong International provides intelligent system solutions that improve utility performance, lower energy consumption, and reduce environmental emissions while providing a comfortable experience. They are innovators and globally leaders in intelligent system solutions for steam, air, and hot water.

Christian & Co. Inc. is a Liaison between The World's Premier Manufacturers and Select Distributors in Michigan and Toledo, OH.

General Filters is a manufacturer of residential whole-house humidifiers, air cleaners, UV air purifiers, dehumidifiers, heat and energy ventilators and fuel oil filters.