Heating and air conditioning equipment for residential and commercial applications, 1/2 to 25 tons, under the Comfort-Aire and Century brand names.

Refrigeration Research Inc. are manufacturers of high-quality commercial/industrial refrigeration and air conditioning components. Refrigeration Research uses hydrogen brazing to assemble tanks, which ensures a clean, contaminant-free process – helping to avoid problems. They also provide personal, accessible service.

SANI-VAC Service provides high-quality indoor air cleaning services, including HVAC units, air ducts, and kitchen exhaust cleaning for commercial, industrial, and institutional organizations. It offer much heating and cooling cleaning services including air duct cleaning, ventilation cleaning, coil cleaning, HVAC cleaning, commercial kitchen exhaust degreasing, cooling tower cleaning, and ductwork inspections.