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The Comfort-Aire PS-91B has been discontinued.
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(800) 865-5931

Monday - Friday

8:30 AM - 5:00 PM Central

Now you can cool a room without any ductwork or special wiring--and move the unit from room to room as needed! The PS-91B is ideal for situations where a window isn't available or the existing window can't handle a room AC unit. Rated at 9,000 BTU, the PS-91B can be used to supplement the central cooling system, or to save energy by conditioning only the room being used. The unit moves easily from one space to another thanks to casters and built-in handles. A condensate management system eliminates buckets that have to be emptied.  The PS-91B comes complete with everything needed for operation and installation, including sliding adapters that fit a variety of window sizes (double-hung and slider) and patio doors to make installation fast and easy. The unit comes with a 48" long hose, for both hot air exhaust and air intake. 

Standard Features

  • Fast and easy to install single hose design
  • Louvers can be adjusted for air flow
  • Cool, dehumidify, air circulation modes
  • Electronic controls with soft-touch keypad
  • Full feature remote control
  • 24 hour on/off timer 
  • Easy-access, washable filter
  • Disposes of its own condensate under most conditions; auto stop protects against overflow as safeguard
  • 48" exhaust and air intake hose

Cooling Capacity

Not sure what size you need? Feel free to use our easy sizing calculator.

Cooling Capacity
9,000 BTU
Air Flow

The amount of air, rated in cubic feet per minute, that the unit can move.

Air Flow
194 CFM
Energy Efficiency Ratio

The measure of air conditioner efficiency at its maximum load

Energy Efficiency Ratio
8.9 EER
Refrigerant

Inside air conditioning systems are liquid/gas refrigerant. There are two types of this refrigerant available for use, R-22 (more commonly known as Freon), and a newer alternative R-410A.

An air conditioning system does not consume refrigerant, but reuses it. As long as there are no leaks in the refrigerant circuit, there is no need to ever add more refrigerant to an air conditioning system.

Although R-22 is an effective refrigerant, if it is released into the atmosphere it can contribute to the depletion of the Earth’s ozone layer. The EPA has mandated the phasing out the use of R-22. It is being replaced by R-410A.

As of 2010, manufacturers are required to make all new air conditioners with R-410A. However, R-22 is still available for sale in existing pre-2010-manufactured equipment, and for use in servicing existing R-22 equipment. By 2020, R-22 will no longer be manufactured, but will still be recycled and available for sale.

Refrigerant
R-410A
Dehumidifying Capacity

The amount of water vapor that can be removed from the air per hour. Measured in pints.

Dehumidifying Capacity
3.4 Pints / Hour
Power Usage (Cooling)
1,150 Watts
Power Usage (Cooling)
9.5 amps
Product Weight
64 lbs
Shipping Weight
75 lbs
Width
18 1/2 Inches
Depth
15 15/16 Inches
Height
30 1/8 Inches
Voltage
115 Volts
Frequency
60 Hz
Compressor Warranty
5 Years
Parts Warranty
1 Years

In 2002 Alpine Home Air Products became the first company to sell heating, air conditioning and indoor air-quality products online. We have proudly served hundreds of thousands of customers, helping them save time and money by buying their products direct.