David Donaldson

Columbus Industries, Inc. operates as an air filter supplier. It provides HVAC, OEM, and paint products. The firm also offer applications such as air purifiers, commercial/industrial HVAC, evaporative cooling, expanded metal, humidification, odor/VOC control filters, pet filter, range/cooler hood filter, spray booth, vacuum cleaners, water purification, and whole house air cleaners. The company was founded in 1965 and is headquartered in Ashville, OH.

Intellihot, Inc. manufactures tankless water heater systems for residential and commercial applications. Its system incorporates advanced control logic, sensors, remote monitoring, self-cleaning and self-learning capabilities, which combined with other patent-pending features enable instant and continuous hot water. The firm offers water heater systems in various models for installation in homes, salons, schools, federal facilities, apartments, offices, car washes, restaurants and hospitals. The company was founded by Sridhar Deivasigamani and Sivaprasad Akasam in 2009 and is headquartered in Galesburg, IL.