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Enclosure Air Conditioners

Kooltronic closed-loop enclosure air conditioners provide greater operating efficiency, lower power consumption and longer life for heat sensitive electrical components. The enclosure cooling unit helps to cool, dehumidify, and recirculate clean air within the electrical cabinet and through the heat producing components, providing protection from high temperatures, humidity and airborne contaminants. We proudly offer the industry's most extensive selection of enclosure air conditioners in numerous sizes and mounting configurations with capacities ranging from 1,000 to 30,000 BTU/H.

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Enclosure Air Conditioners keep your cabinet cool

Our industrial air conditioners are engineered for dependable performance at high ambient temperatures, as enclosure cooling units can be installed in many industrial environments including harsh and other challenging operating conditions. In addition, a full line of factory installed accessories and options allow for a more customized cabinet cooling solution to optimize performance in certain applications. To view these options, explore our complete line of enclosure accessories. For instances where the ambient air can accomplish the desired heat removal, a fan or blower may be all that is required.

Many of our sealed enclosure cooling units feature a programmable thermostat, which allows for accurate and versatile enclosure cooling. With the use of a separate "hot key" they can also be utilized for remote monitoring and alarms, using Modbus protocol. Depending on the model series, sealed enclosure cooling for NEMA Enclosure Ratings of 12, 3R, 4 & 4X can be maintained.

The Guardian/GuardianX and SlimKool enclosure cooling units have been designed for both indoor or outdoor use, without the need for weather shielding. The popular Guardian/GuardianX Series offers the greatest variety of models, sizes and BTU/H outputs to choose from, as well as NEMA 4 and 4X Ratings, and various voltages, including 480 Volt. The SlimKool Series is specifically designed to mount on electrical enclosures where available vertical space is limited, a common problem in many industrial applications. These are also available in NEMA 4 and 4X versions as well as 480 Volt. Our patented Hazardous Location Series offers enclosure cooling in areas where NEC class 1, Division 1 & 2 is required; these units use the cabinet's existing purge system. For indoor cabinets where small capacities are required, the Micro-Mini, Narrow Mini and Profile Series are excellent choices. If clean water is available, our TrimLine Water Cooled Series is recommended where high ambient temperatures and contaminated air is present. In some applications, the only available cabinet space for mounting an enclosure cooling unit is on top, horizontally. In these instances, the Advantage, Horizontal Super Mini and Compact Plus Series are available to meet your needs. The Intrepid Series is best for high capacity, outdoor applications.

If you have an older Kooltronic air conditioner or a competitor's unit that needs to be replaced, we offer adaptor plates and plenums that will minimize enclosure modifications, making the switch out much easier.

Kooltronic Enclosure Air Conditioners are engineered for reliable performance and long useful life. All applicable components are UL/CSA Listed or Recognized. Our enclosure cooling units are developed in-house using an integrated 3D design process and drawings are available in 2D and 3D formats for inclusion in your design specifications.

Kooltronic uses revision controlled, paperless manufacturing documentation to ensure uniformity and quality. Our New Jersey production facility utilizes robotic sheet metal fabrication, an automated powder paint line and continuous formed tubing bending equipment to reduce refrigerant leak potential. Bar-coded evacuation and charge, and final test inspection is standard for all cooling systems before being shipped to our customers.

Kooltronic also designs and manufactures a variety of air conditioners to meet unique specifications. We invite your inquiries regarding our quick-response modification and custom-design cooling system capabilities.

An Intro to Closed-Loop Cooling

An Intro to Closed-Loop Cooling

An Intro to Closed-Loop Cooling

An Intro to Closed-Loop Cooling

All-Weather Enclosure Air Conditioner

Guardian Series
NEMA
TYPE 12, 3R & 4
MAINTAINED
  • NEMA Rating: 12, 3R & 4 Maintained (UL50)
  • BTU/H Capacity Range: 1,000 - 26,000
  • For Applications Requiring Washdown
  • Unit Heights from 15 to 60 inches
  • Epoxy-Coated Condensor Coils
  • Weather Protectection Integral to the AC Unit
View Models

All-Weather Enclosure Air Conditioner

GuardianX Series
NEMA
TYPE 4X
MAINTAINED
  • NEMA Rating: 4X Maintained (UL50)
  • BTU/H Capacity Range: 1,000 - 26,000
  • For Corrosive Environments
  • Unit Heights from 15 to 60 inches
  • Epoxy-Coated Condensor Coils
  • Weather Protectection Integral to the AC Unit
View Models

Indoor/Outdoor 480V Enclosure Air Conditioner

Guardian/GuardianX 480V Series
NEMA
TYPE 4 or 4X
MAINTAINED
  • NEMA Rating: 4 or 4X Maintained (UL50)
  • BTU/H Capacity Range: 3,000 - 26,000
  • For Corrosive Environments
  • Unit Heights from 24 to 60 inches
  • Epoxy-Coated Condensor Coils
  • Weather Protectection Integral to the AC Unit
View Models

Slim Depth Enclosure Air Conditioner

Access Series
  • Ultra Slim 5-inch Depth
  • NEMA Rating: 12, 3R Maintained
  • BTU/H Capacity up to 3,000
  • Versatile Mounting Options
View Models

Narrow-Width Air Conditioner

SlimKool Series
NEMA
TYPE 12, 3R & 4
MAINTAINED
(4X OPTIONAL)
  • NEMA Rating: 12, 3R, 4 or 4X Maintained
  • BTU/H Capacity Range: 4,000 - 11,000
  • Fits Enclosures with 12 Inch Depth
  • Safe for Washdown/Outdoor & Corrosive Air
  • Epoxy-Coated Evaporator & Condenser Coils
  • Programmable Thermostat
View Models

NEC Class I, Div. 1 & 2 Air Conditioner

Hazardous Location Series
NEMA
TYPE 12, 3R & 4/4X
MAINTAINED
  • For Class I, Divisions 1 & 2 HazLoc
  • NEMA Rating: 12, 3R, 4/4X Maintained
  • UL Listed (UL484) & Recognized (NFPA 496)
  • BTU/H Capacities up to 24,000
  • Programmable Thermostat
  • U.S. Patent No. 9,157,670
View Models

Small Indoor Enclosure Air Conditioner

Micro-Mini Series
NEMA
TYPE 12
MAINTAINED
  • NEMA Rating: 12 Maintained (UL50)
  • BTU/H Capacity up to 1,000
  • Ideal for Space-Limited Applications
  • Versatile Mounting Options
  • UL/CUL Listed (UL50)
  • Versatile Mounting Options
View Models

Top/Bottom/Internal Mount Air Conditioner

Horizon Series
  • All Models UL/CUL Listed or Recognized
  • BTU/H Capacity Range: 2,500 to 12,000
  • Excellent Alternative to Side Mounting
  • Available in Five Sizes
View Models

Narrow Indoor Enclosure Air Conditioner

Trimline Narrow Mini Series
NEMA
TYPE 12
MAINTAINED
  • NEMA 12 Maintained (UL50)
  • BTU/H Capacity up to 2,500
  • Narrow 10 Inch Mounting Width
  • Unit Height 20 Inches
View Models

Rack-Mounted Enclosure Air Conditioner

Rack Mount Series
  • All Models UL/CUL Listed or Recognized
  • BTU/H Capacity up to 5,000
  • Designed to Fit Standard 19 Inch Data Rack
  • Various Airflow and Voltage Options
View Models

Outdoor Enclosure Air Conditioner

Intrepid Series
NEMA
TYPE 3R, 12 & 1
MAINTAINED
  • NEMA Rating: 1, 12, 3R Maintained (UL50)
  • BTU/H Capacity up to 30,000
  • Protects Against Most Climate Hazards
  • Features Quiet Operation
View Models

Water-Cooled Enclosure Air Conditioner

TrimLine Water-Cooled Series
  • Suitable for Extreme Environments
  • Protective Water Flow Controls
  • UL/CSA Recognized Components
  • 15 Inch Mounting Footprint
View Models

All-Weather Enclosure Air Conditioner

Profile Series DP17
  • NEMA 12/3R Ratings Maintained (UL50)
  • BTU/H Capacity up to 2,000
  • 17 Inch Unit Height
  • Mounts Internally or Externally
View Models

Retired Product Lines and Older Models

Legacy Products
  • Profile Series
  • Profile 480 Volt
  • Traditional Series
  • Integrity Series
  • Advantage Series
  • Trimline Series
  • Horizontal Top Mount
  • WNP Water-Cooled
View Models

Discontinued Products & Recommended Alternatives

Discontinued Products
R22 Refrigerant Discontinued Air Conditioners
These products have been discontinued (including R22 refrigerant units) and are listed here for informational purposes.
Discontinued Switchable Air Conditioners
Models that are operable at different Hz are discontinued and are listed here for informational purposes.
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Tuesday, May 20, 2025  
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Kooltronic, Inc.
30 Pennington-Hopewell Road
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