Johnson Air-Rotation HVAC System Technology: Duct Work is Expensive

Johnson Air-Rotation HVAC System Technology Series For decades, rooftop units paired with elaborate duct work have been the most common HVAC solution; mostly because facility managers do not know about other ways of effectively heat and/or cool large, open spaces. Rooftop units may appear cheaper on paper, but if you add in the installation costs as well as utility consumption … Read More