Home Products EXAIR Cabinet Coolers
Cabinet Cooler with Filter

Cabinet Coolers®

Stop electronic control downtime due to heat, dirt and moisture!

Cabinet Coolers maintain NEMA 12, 4 and 4X integrity and are

UL listed



What are EXAIR Cabinet Coolers?

EXAIR Cabinet Coolers are a low cost, reliable way to cool and purge electronic control panels. EXAIR Cabinet Coolers incorporate a vortex tube to produce cold air from compressed air - with no moving parts. The compact Cabinet Cooler can be installed in minutes through a standard electrical knockout. NEMA 12, 4 and 4X Cabinet Coolers that match the NEMA rating of the enclosure are available in many cooling capacities for large and small control panels. Cabinet Cooler Video

Why EXAIR Cabinet Coolers?

The vortex tubes incorporated in the EXAIR Cabinet Cooler Systems are constructed of stainless steel. The wear, corrosion and oxidation resistance of stainless steel assures long life and maintenance-free operation. 

All EXAIR Cabinet Coolers are UL Listed and CE compliant.

NEMA 4 Cabinet Cooler keeps inside cool and dry
A Model 4830 NEMA 4 Cabinet Cooler cools a panel with 20°F (-7°C) air while keeping the inside dry.


  • Programmable controllers
  • Line control cabinets
  • Motor control centers
  • Relay panels
  • NC/CNC systems
  • Modular control centers
  • CCTV cameras
  • Computer cabinets
  • Cool laser housings
  • Electronics scales
  • Food service equipment

Online Cabinet Cooler Sizing Guide

Faxable Sizing Guide PDF

Cabinet Coolers are compact
Cabinet Coolers are compact like this Model 4608 NEMA 4 measuring only 5" (127mm) high.


Special Cabinet Coolers

  • Low Cost
  • Compact
  • Quiet - less than 75 dBA
  • Install in minutes
  • Maintain NEMA 12, 4 and 4X integrity (IP54 and 66)
  • Stabilize enclosure temperature and humidity
  • No CFC's
  • No moving parts - maintenance free
  • Mount in standard electrical knockout
  • Stop nuisance tripping
  • Stop heat damage
  • Eliminate fans and filters
  • Eliminate lost production
  • Stop circuit drift
  • Stop dirt contamination
  • Provide washdown protection
  • Cooling capacities to 5,600 Btu/hr. (1411 Kcal/hr.)
  • High temp. models for ambients up to 200°F (93°C) available
  • Type 316 stainless steel available
  • Purge models for non-hazardous locations available

How Cabinet Coolers Work

Compressed air enters the vortex tube powered Cabinet Cooler and is converted into two streams, one hot and one cold. (For more information on vortex tube operation, see Vortex Tubes). Hot air from the vortex tube is muffled and exhausted through the vortex tube exhaust. The cold air is discharged into the control cabinet through the cold air distribution kit. The displaced hot air in the cabinet rises and exhausts to atmosphere through the cabinet air exhaust at a slight positive pressure. Thus, the control cabinet is both cooled and purged with cool, clean air. Outside air is never allowed to enter the control panel.

Selecting the Right Cabinet Cooler Model

EXAIR Cabinet Coolers are available with or without thermostat control. The continuous coolers (Model 4200 and 4700 series) are recommended when constant cooling and a constant positive purge are desirable. The thermostatically controlled systems (Model 4300 and 4800 series) save air by activating the cooler only when internal temperatures approach critical levels. The adjustable thermostat is factory set at 95°F (35°C). Thermostatic systems are recommended where heat load fluctuates and continual purge is not required.

All EXAIR Cabinet Cooler Systems contain a Cold Air Distribution Kit to circulate the cold air throughout the enclosure. In order to ensure optimum performance and that no moisture enters your electrical enclosure, it is critical that all EXAIR Cabinet Coolers are supplied with clean, filtered air at all times and we recommend the use of a 5 micron Automatic Drain Filter for the compressed air supply. See below for more details.

Heat Can Stop Your Machines

It happens when you least expect it. High temperatures can cook the electronics that control your machines, resulting in erroneous readings, trip-outs or fried circuit boards. Cooling the electrical cabinet can eliminate these problems, but how will you do it?

Heat Exchanger

Heat Exchangers and Pipes

These have serious limitations when it comes to summer time heat. In many cases, the temperature of the hot plant on a summer day is close to that inside the enclosure. There is not enough difference in temperature for a decent heat exchange.

Refrigerant Panel Air Conditioner

Refrigerant Panel Air Conditioners

These coolers are expensive, take almost a day to install, and are prone to failure when dust and dirt clogs the filter. Vibration from machinery contributes to component failures and loss of freon. Life expectancy for most compressors is rated at 2.5 years of continuous operation. Average replacement cost for a bad compressor is $750 plus installation. Often, a floor drain is not readily available for the condensation tube.

Dangerous Fan Cooled Electrical Panel
A dangerous shock hazard exists when the panel door is opened to let a fan blow hot, dirty shop air at the electronics.
EXAIR Cabinet Cooler

EXAIR Cabinet Coolers™

Our compressed air operated Cabinet Coolers are the low cost solution. NEMA 12, 4 and 4X models are available that are very compact and mount in just minutes through an ordinary electrical knockout. Thermostat control limits compressed air use by operating the Cabinet Cooler only when the temperature inside the enclosure reaches critical levels.

Heat exchangers, heat pipes and refrigerant coolers all have filters that can clog. Left unattended, mechanical failure of the cooler is likely. And, the expensive equipment in the electrical enclosure can malfunction, overheat and shut down the entire machine or process. EXAIR Cabinet Coolers have no moving parts to wear out and do not require constant monitoring. All models are UL Listed and available in a large number of styles and cooling capacities.

Environmental Considerations

NEMA 12 (IP54) Cabinet Coolers (dust-tight, oil-tight) are ideal for general industrial environments where no liquids or corrosives are present.

NEMA 4 (IP66) Cabinet Coolers (dust-tight, oil-tight, splash resistant, indoor/outdoor service) incorporate a low pressure relief valve for both the vortex tube and cabinet air exhaust. This valve closes and seals when the cooler is not operating, to maintain the integrity of a NEMA 4 enclosure.

NEMA 4X (IP66) Cabinet Coolers offer the same protection as NEMA 4 but are constructed of stainless steel for food service and corrosive environments.

NEMA 12 Specifications

NEMA 12 IP54 (Dust, oil resistant)
Model # Capacity Btu/hr. Capacity Kcal/hr. Thermostat Control Sound Level dBA
4204 275 69 No 59*
4208 550 139 No 67*
4215 1000 252 No 73*
4225 1700 428 No 74*
4230 2000 504 No 74*
4240 2800 706 No 78*
4250 3400 857 No 75*
4260 4000 1007 No 77*
4270 4800 1209 No 77*
4280 5600 1411 No 79*
4304 275 69 Yes 59*
4308 550 139 Yes 67*
4315 1000 252 Yes 73*
4325 1700 428 Yes 74*
4330 2000 504 Yes 74*
4340 2800 706 Yes 78*
4350 3400 857 Yes 75*
4360 4000 1007 Yes 77*
4370 4800 1209 Yes 77*
4380 5600 1411 Yes 79*
*With optional cold muffler installed

NEMA 4 Specifications

NEMA 4 IP66 (Splash resistant)
Model # Capacity Btu/hr. Capacity Kcal/hr. Thermostat Control Sound Level dBA
4704 275 69 No 59*
4708 550 139 No 67*
4715 1000 252 No 73
4725 1700 428 No 80
4730 2000 504 No 80
4740 2800 706 No 82
4750 3400 857 No 84
4760 4000 1007 No 84
4770 4800 1209 No 84
4780 5600 1411 No 85
4804 275 69 Yes 59*
4808 550 139 Yes 67*
4815 1000 252 Yes 73
4825 1700 428 Yes 80
4830 2000 504 Yes 80
4840 2800 706 Yes 82
4850 3400 857 Yes 84
4860 4000 1007 Yes 84
4870 4800 1209 Yes 84
4880 5600 1411 Yes 85

NEMA 4X Specifications

NEMA 4X IP66 (Corrosion resistant)
Model # Capacity Btu/hr. Capacity Kcal/hr. Thermostat Control Sound Level dBA
4704SS 275 69 No 59*
4708SS 550 139 No 67*
4715SS 1000 252 No 73
4725SS 1700 428 No 80
4730SS 2000 504 No 80
4740SS 2800 706 No 82
4750SS 3400 857 No 84
4760SS 4000 1007 No 84
4770SS 4800 1209 No 84
4780SS 5600 1411 No 85
4804SS 550 69 Yes 59*
4808SS 550 139 Yes 67*
4815SS 1000 252 Yes 73
4825SS 1700 428 Yes 80
4830SS 2000 504 Yes 80
4840SS 2800 706 Yes 82
4850SS 3400 857 Yes 84
4860SS 4000 1007 Yes 84
4870SS 4800 1209 Yes 84
4880SS 5600 1411 Yes 85

Special Cabinet Coolers

EXAIR manufactures special NEMA 12, 4 and 4X Cabinet Coolers suited to specific environmental requirements.
High Temperature Cabinet Coolers (shown top right) for ambients of 125° to 200°F (52° to 93°C) are available. Internal components can withstand high temperatures (like those near furnaces, ovens, etc.). High Temperature Cabinet Cooler
The Non-Hazardous Purge Cabinet Cooler Systems (shown middle right) are ideal for dirty areas where contaminants might normally pass through small holes or conduits. Under normal conditions, the NHP Cabinet Cooler Systems provide a slight positive pressure in the enclosure by passing 1 SCFM (28 SLPM) of air through the cooler, when the solenoid valve is in the closed position. When the thermostat detects high temperature, it energizes the solenoid valve to pass full line pressure to the Cabinet Cooler, giving it full cooling capability. Non-Hazardous Purge Cabinet Cooler
Type 316 Stainless Steel NEMA 4X Cabinet Coolers (shown bottom right) are suitable for food service, pharmaceutical, harsh and corrosive environments, and other applications where 316SS is preferred. Capacities from 550 to 5600 Btu/hr. (139 to 1411 Kcal/hr.) are available. Type 316 Stainless Steel NEMA 4X Cabinet Cooler

Dual Cabinet Cooler Systems

EXAIR's Dual Cabinet Cooler Systems are ideal for large electrical enclosures and high heat loads. Dual Cabinet Cooler Systems are available in NEMA 12, 4, and 4X models with cooling capacities of 4,000, 4,800 and 5,600 Btu/hr (857, 1007, 1209 and 1411 Kcal/hr). For more information, contact Compressed Air Australia.

Dual Cabinet Cooler System

Cold Air Distribution Kit: The kit includes a length of flexible vinyl tubing used to direct the cold air for circulation, or to hot spots. Tubing connectors and adhesive backed clips to hold the tubing in place are provided.

Filtration: A 5 micron automatic drain water and dirt filter, such as EXAIR Model 9001, is critical for the protection of electronics from water in the compressed air line.  If oil is present in the compressed air, a coalescing (oil removal) filter, such as EXAIR Model 9005 is recommended.

Cold Air Distribution Kit
Cold Air Distribution Kit

Humidity: For a continuous operating Cabinet Cooler, relative humidity inside the enclosure stabilizes at 45%. No moisture condenses inside the enclosure. (The enclosure must be sealed to prevent condensation.)

Inlet Air Temperature: Cabinet Cooler Systems provide a 50°F (28°C) temperature drop from supply air temperature when the inlet pressure is 80 PSIG (5.5 BAR). Elevated inlet temperature will produce a corresponding rise in cold air temperature and reduction in cooling capacity. Low air pressures will also reduce the cooling capacity.

Mounting: The Cabinet Cooler mounts to the enclosure through a drilled hole or electrical knockout. The NEMA 12 Cabinet Coolers may be mounted on the top or side of the panel. NEMA 4 and 4X Cabinet Coolers must be mounted on the top of the panel, or on the side of the panel using our Side Mount Kits.

Solenoid Valve and Thermostat:Cabinet Cooler Systems with thermostat control include a solenoid valve and thermostat that limit the flow of compressed air to only when cooling is needed. Solenoid valves are rated 110-120V/50Hz-60Hz, 200-240V/50Hz-60Hz or 24VDC. They are UL Listed, CSA Certified. The thermostat is factory set at 95°F (35°C)...It is rated 24V-240V, 50/60Hz and is UL Recognized, CSA Certified.

Continuous Operation Cabinet Cooler Kit
Systems for continuous operation include a Cabinet Cooler, cold air distribution kit and filter.
Thermostat Control Cabinet Cooler Kit
Systems with thermostat control include a Cabinet Cooler, thermostat, solenoid valve, cold air distribution kit and filter.
Solenoid and Thermostat Control Cabinet Cooler Kit
Solenoid Valve and Thermostat.

ETC™ Electronic Temperature Control

EXAIR’s digital ETC (Electronic Temperature Control) provides precise temperature control for your electrical enclosure. It can accurately maintain a constant temperature that is slightly under the maximum rating of the electronics, permitting just enough cooling for the electronics without going so cold as to waste compressed air. The LED readout of the ETC displays the internal temperature of the electrical enclosure (°F or °C) that is constantly being monitored by a quick response thermocouple. The control activates the solenoid valve (included) when the temperature setting is exceeded. The polycarbonate plastic enclosure of the ETC is suitable for NEMA 12, 4 and 4X environments. (Cabinet Cooler not included.)

Side Mount Kits

EXAIR's new Side Mount Kits make mounting on the side of an electrical enclosure possible when there is limited space on the top or side. (NEMA 4 and 4X Cabinet Coolers must be mounted vertically.) The Side Mount Kits maintain the NEMA rating of large and small NEMA Type 12, 4 and 4X enclosures. They mount in a standard electrical knockout (1-1/2 NPS). Side Mount Kits for NEMA 12 Cabinet Coolers have an aluminium construction. Those for NEMA 4 and 4X Cabinet Cooler Systems are Type 303 or Type 316 stainless steel.

The Side Mount Kits are suitable for use on large or small electrical enclosures with Cabinet Coolers that have cooling capacities up to 2800 Btu/hr.

Side Mount Cabinet Cooler
EXAIR’s Side Mount Kits for NEMA 12, 4 and 4X Cabinet Coolers offer convenient mounting to the side of an electrical enclosure.
Side Mount Kits
Model # Description
Side Mount Kit for NEMA 12 Cabinet Coolers up to
550 Btu/hr. (139 Kcal/hr.)
Side Mount Kit for NEMA 12 Cabinet Coolers,
650 Btu/hr. (165 Kcal/hr.) and higher
Side Mount Kit for NEMA 4 and 4X Cabinet Coolers up to 550 Btu/hr. (139 Kcal/hr.)
Side Mount Kit for NEMA 4 and 4X Cabinet Coolers,
650 Btu/hr. (165 Kcal/hr.) and higher
90 Degree Side Mount Dimensions
90 Degree Side Mount Kit Dimensions
Model UOM A B C D E F G
4906 in 2.50 2.50 1.50 3.50 3.03 1 NPS 1-1/2 NPS
mm 64 64 38 89 77
4907 in 2.50 2.50 1.50 3.50 3.03 1-1/2 NPS 1-1/2 NPS
mm 64 64 38 89 77
4909 in 2.50 2.50 1.50 2.19 1.73 1/2 NPS 1-1/2 NPS
mm 64 64 38 56 44
4910 in 2.50 2.50 1.50 2.19 173 3/4 NPS 1-1/2 NPS
mm 64 64 38 56 44


NEMA 12 Cabinet Cooler Systems
NEMA 4 Cabinet Cooler Systems
Nema 4X Type 303 Stainless Steel
Nema 4X Type 316 Stainless Steel

ETC-Electronic Temperature Control Systems include the NEMA 4 Cabinet Cooler(s), cold air distribution kit and Electronic Temperature Control.


Valves and Thermostat Kits
Model #
Valve and Thermostat Kit -(120V ,50/60 Hz )
NEMA 4-4X Valve and Thermostat Kit
Valve and Thermostat Kit - 200-240V NEMA 4 - 4x valve and Thermostat kit,(120v,50/60 Hz)
NEMA 4-4X Valve and Thermostat Kit - C240

Electronic Temperature Control

Model #
ETC - Electronic Temperature Control, 120V, 50/60Hz, 1/4 NPT
ETC - Electronic Temperature Control, 240V, 50/60Hz, 1/4 NPT

Installation and Maintenance Sheets

Small NEMA 12 Cabinet Cooler
Large NEMA 12 Cabinet Cooler
High Temperature NEMA 12 Cabinet Cooler

Small NEMA 4-4X Cabinet Cooler
Large NEMA 4-4X Cabinet Cooler
High Temperature NEMA 4-4X Cabinet Cooler

Non Hazardous Purge Small NEMA 12
Non Hazardous Purge Large NEMA 12
Non Hazardous Purge Small NEMA 4-4X
Non Hazardous Purge Large NEMA 4-4X

ETC (Electronic Temperature Control)
Site Mount Kit
Model 4908 Dual Cabinet Cooler Installation Kit
Model 4519 Capacitor

These files are in the Adobe Acrobat PDF format. The viewer is free and is available at www.adobe.com




Compressed Air Australia

GPO Box 2792, Darwin,
Northern Territory 0801, Australia
Tel: +61 8 8983 3999
Fax: +61 8 8983 3900