Cold air to -30°F (-34°C) from your compressed air supply!

EXAIR's Adjustable Spot Cooler
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EXAIR's compressed air powered Adjustable Spot Coolers are a low cost, reliable, maintenance free solution to a variety of industrial spot cooling problems. With the turn of a knob, you can select the temperature best suited to your application. The Adjustable Spot Cooler provides a precise temperature setting from -30°F (-34°C) to room temperature. A swivel magnetic base provides easy mounting and portability. Flexible tubing that holds its position directs the cold air. No moving parts or CFC's assures maintenance free operation.

The Adjustable Spot Cooler incorporates a vortex tube that converts an ordinary supply of compressed air into cold air.

  • It can produce temperatures from -30° to +70°F (-34° to +21°C).
  • Parts included for flow rates of 15, 25, and 30 SCFM (425, 708, 850 SLPM). A 25 SCFM (708 SLPM) generator is factory installed.
  • It can produce refrigeration up to 2,000 Btu/hr. (504 Kcal/hr.).

The Adjustable Spot Cooler is available with either a single point or dual point hose kit. The single point system (Model 3825) is recommended for cooling a small surface like solder joints, hot melts or drilled plastics. The dual point system (Model 3925) is recommended when heat is generated over a larger surface area.


  • Adjusting thermostats
  • Cooling solder
  • Cooling machined plastics
  • Setting hot melts
  • Cooling welding horns
  • Cooling molded plastics
  • Electronic component cooling
  • Cooling gas samples
  • Cooling environmental chambers


  • No moving parts
  • No electricity or chemicals
  • Small, lightweight
  • Low cost
  • Maintenance free
  • Instant cold air
  • Quiet - less than 75 dBA
  • Swivel magnetic base
  • Interchangeable generator
EXAIR Adjustable Spot Coolers

The Problem: A manufacturer of electrical heat tapes had a problem testing thermostats for accuracy. The heat tape is supposed to switch on when the outdoor temperature dips below 40°F to prevent pipes from freezing or ice from building up on a roof’s edge. The liquid-tight thermostat of every tape had to be dipped into a bowl of ice water (thermometer checked at 36°F (2°C) to make sure the indicator light came on and the tape got warm. Summertime heat caused the water to heat up so quickly that more time was spent regulating the water temperature than testing thermostats.

The Solution: The water bath was replaced with a Model 3825 Adjustable Spot Cooler. Once set to their desired temperature of 36°F (2°C), it provided a stable temperature all day long without adjustment. Drying each heat tape was no longer required and testing was over in seconds.

Comment: The Adjustable Spot Cooler paid for itself in no time as a result of the increased productivity. In this case, the company used the included 15 SCFM (425 SLPM) generator which minimized the compressed air use, costing only 23 cents per hour of continuous use! When testing thermostats, cooling machined plastics, setting hot melts or controlling tolerances, the Adjustable Spot Cooler is the best choice.