• Heavy 18-gauge painted galvanized panels for product longevity
  • Structural steel welded frame construction
  • Direct expansion or chilled water cooling coils
  • Variety of filtration levels, with 30% pleated filters standard
  • Stainless steel triple pitch condensate drain pan with nozzle
  • Galvanized steel walkway plank for easy maintenance of coils, fans and motors
  • Ground mounted coils and filters for easy maintenance and cleaning
  • Adjustable horizontal and vertical discharge louvers and turning vanes for maximum air distribution control
  • Insulated cabinet
  • Wiring in-factory for single-point connection
  • Occupied Thermostat
  • Rear-fan failure light (double fan systems only)
  • Non-fused motor disconnect switch, motor starter and overload protection
  • Key-lock power and control panels (NEMA 1)
  • Long lasting paint finish and hinged access door
  • The ONLY UL listed Air-Rotation/air turnover system on the market
  • 1 year parts warranty
  • Stringent factory test for operation and sound in a UL-approved test data program

Air-Rotation System Heating Sources

  • Natural Gas
  • Propane
  • #2 Oil or Dual Fuel
  • Steam
  • Hot water
  • Electric coil

Johnson Air-Rotation Systems General Specifications

One Johnson Air-Rotation System Capacity

  • 150,000 square feet conditioned with a single system
  • Up to 6,250 MBH per heating system
  • Up to 450 tons per cooling system (cooling and humidity control)
  • Up to 170,000 CFM per system

Air-Rotation System Cooling Sources

  • DX
  • Chilled Water/Glycol
  • Evaporative Cooling
  • Ammonia

Johnson Air

Founded in 1921, Johnson Air-Rotation Systems set the bar by creating a new technology now known in the industry as Air-Rotation.  Don’t be fooled by imitators referring to air turnover.  Over the decades, Johnson Air-Rotation Systems have continued to innovate and refine the concept to create the most effective method to heat, cool, filter and/or ventilate large, open buildings.  Johnson Air-Rotation Systems have been proudly made in the USA since our beginning and continue to be to this day.  As the ONLY UL® approved Air-Rotation/air-turnover system in the industry, we take pride in our custom manufactured product and you will too.

Johnson Air-Rotation Systems continually are the perfect option for manufacturing and industrial facilities heating and cooling, warehouses, distribution centers and retail wholesale clubs heating and cooling, product sensitive storage heating and cooling and hospital and university equipment rooms heating and cooling.  In addition, Johnson Air-Rotation Systems are great for plastic injection molding facilities heating and cooling, pharmaceutical storage heating and cooling, exhibition centers heating and cooling, aircraft hangars heating and cooling and sports complexes, athletic facilities and gymnasium/gym heating and cooling.  Johnson Air-Rotation Systems are a much better option than rooftop units for heating or cooling a large open building.