General Specifications

Johnson AIR ROTATION® HVAC 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
  • Full economizer capability, 0-100% outside air

AIR ROTATION® System Cooling Sources

  • DX
  • Chilled water/glycol
  • Evaporative cooling
  • Ammonia

AIR ROTATION® System Heating Sources

  • Natural gas
  • Propane
  • #2 Oil or dual fuel
  • Steam
  • Hot water
  • Electric coil
  • Heat pump


Heavy 18-gauge painted galvanized panels for product longevity
Structural steel welded frame construction
Variety of filtration levels, with 30% pleated filters standard
Stainless steel triple pitch condensate drain pan
Thermostat with setback programming option
1 year parts warranty
Insulated cabinet
Ground mounted coils and filters for easy maintenance and cleaning
Adjustable horizontal and vertical discharge louvers and turning vanes for maximum air distribution control
Direct expansion or chilled water cooling coils
Wiring in-factory for single-point connection
Stringent factory test for operation and safety in a UL-approved and monitored test program
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
Galvanized steel walkway for easy maintenance of coils, fans and motors
Automatic and Manual High limit safety switches


  • Factory Mount Controls
  • Re‐Heat (Gas, Condenser, EL)
  • High Efficiency/Multi‐Stage Filtration
  • In‐House Piping Capabilities
  • Humidification/Dehumidification
  • Airflow Measuring
  • Direct Fired Heat
  • Sound Attenuation Casing, Duct, Floor)
  • DWDI/SWSI Fans
  • Redundancy with Single Unit
  • Direct Drive
  • Access Platforms
  • Air Blenders
  • Double-wall construction
  • Oil mist eliminators
  • Bipolar ionizers
  • Bacterial Control
  • Custom Paint / SS Wash‐Down / Façade
  • Face/Bypass or IFB Coils

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