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Cool Boss CB-28

Cool Boss CB-28



The Cool Boss CB-28 is equipped with four Honeycool evaporative media pads that act like a sponge and soak up water, kind of like a pre-chiller for the incoming air.


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Part Number: 5150152
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A fan-favorite, the CB-28 finds the perfect balance between size and cold air delivery. Planning a get-together with friends and family? Maybe you’re planning an outdoor event during the hot summer months. Whatever the reason, the CB-28 is there to make sure everyone is nice and comfortable.

The CB-28 is a medium-duty commercial-grade cooler that is well-suited for large industrial space cooling. When temperatures rise and you’re looking for a cost-effective cooling solution, look no further than Cool Boss. The CB-28 evaporative cooler puts out big air – exactly what you’d expect from the world-leader in commercial-grade cooling technology.

Use it indoors or out and help turn summer to winter with just everyday tap water. Even though the CB-28 is equipped with a whopping 80-gallon auto-refilling reservoir, because of its abundant water-holding size, it can literally run for hours without the need for refilling, just in case you’re using it where no garden hose is available.

Cool Boss CB-28 Features

  • CB-28L model
  • Portable evaporative cooler
  • 110 volt / 60 Hz / 1 phase
  • 28″ fan diameter
  • Variable fan speed
  • 80 gallon water capacity
  • 15 foot power cord
  • 2.6 – 3.2 gallon per hour water consumption
  • 2,125 square feet effective cooling area
  • 60 – 100 dBA
  • 52″ L x 37″ W x 76.5″ H

More Features

  • Directional venturi fan cone
  • Blue Flex axial flow fan
  • Honeycool evaporative media
  • Antibacterial housing (ABS plastic)
  • water inlet flow control
  • GFCI plug
  • Built-in anion negative ion air purifier


  • Soft touch LED controls
  • Remote control with a convenient holder

Standout Features

  • LED floodlight
  • Built-in timer
  • Bluetooth audio player

  • Part Number: 5150152

Additional information


Part Number

Model Series


10,645 CFM

Cooling Area (ft²)

2,125² ft.


110 Volt

Noise Level

100 dBA

Special Features

Bluetooth Audio, LED Floodlight, Remote Control

Fan Diameter


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