Johnson Air Products | 753 followers on LinkedIn. Making a Difference in Air Since 1948 | Wholesale Distributor and Manufacturer's Representative of Heating, Ventilation & Air Conditioning (HVAC) Systems. Our products include Commercial Exhaust Fans, Industrial Ventilation Systems and Residential Air Conditioning. We supply Mechanical Contractors, Residential Contractors, Engineers, and Architects in Oregon and Southwest Washington with a large variety of quality HVAC products and information.