WhisperKool Slimline LS – Self Contained

  • Through-the-wall installation
  • Condensate Evaporator
  • Two-speed fan switch
  • Up to 45% more capacity
  • UV light upgrade
  • Customizable front panel
  • Quiet and efficient operation
  • Advanced electronic display
  • Liquid-temperature-measuring bottle probe
  • Can be mounted in the often-unused space above a door
  • 30°F temperature differential



We are happy to announce the first unit in our new luxury series (LS). The new WhisperKool Slimline LS has evolved into a unit that can cool at two capacities at the flip of a switch. We have added centrifugal blowers, which are significantly quieter and can also be set at a medium or low speed, larger coils for greater system capacity, and an improved condensate management system.


We offer a UV light upgrade to protect your unit from mold and an interchangeable decorative grille to customize the look of your luxury system. The controller has been moved to the condenser side of the unit for easier access.


The WhisperKOOL Slimline LS is one of our quietest and most compact self-contained cooling units. Slimline units were designed to be mounted in a living area and can be placed in the often-unused space between the cellar door and ceiling. The Slimline fits snugly above your cellar door, out of the way, providing efficient cooling and a low-sight profile.
  • Space-Efficient Design: The Whisperkool Slimline LS wine cellar cooling unit is known for its slim and compact design, making it an ideal choice for wine cellars with limited space.
  • Precise Temperature Control: This cooling unit provides precise temperature regulation, ensuring your wine cellar maintains the perfect temperature for wine storage.
  • Humidity Management: It includes humidity control features to prevent cork drying and maintain the optimal humidity level for wine preservation.
  • Quiet Operation: Whisperkool is renowned for its quiet performance, and the Slimline LS unit is designed to operate with minimal noise, preserving the peaceful ambiance of your wine cellar.
  • Easy Installation: Installation is straightforward, and the unit comes with comprehensive installation instructions, making it convenient for wine enthusiasts and professionals alike.
  • Energy Efficiency: Whisperkool Slimline LS units are designed for energy efficiency, helping you reduce energy consumption while protecting your valuable wine collection.



Please review all BTU specifications under the “Specifications” tab. The BTU/h value shown here is a theoretical number. There are often circumstances under which a cellar design may require a larger unit due to variables not accounted for in the formula. For example, these variables could be building materials (such as glass, stone, concrete, etc.)

Which do not offer the insulation capacity required to maintain the optimal cellar environment. We recommend purchasing a unit with a larger capacity to compensate for these unaccounted-for variables. An undersized unit can lead to premature failure and will most likely prevent the cellar from reaching your desired temperature.

WhisperKool Slimline LS SPECIFICATIONS

Cellar Size:

Approx. 300 cu. ft. (low fan speed) and 650 cu. ft. (medium fan speed) when cellar is fully insulated and sealed with a proper vapor barrier (each wine cellar is unique and has specific cooling requirements; heat load calculations should always be performed prior to selecting a cooling unit)
BTU/h w/60°F air entering condenser coil:

Low speed fan – 2601/1961 (total/sensible) Medium fan speed – 3032/2413 (total/sensible)

BTU/h w/75°F air entering condenser coil:
Low speed fan – 2635/1951 (total/sensible) Medium fan speed – 2904/2309 (total/sensible)
BTU/h w/85°F air entering condenser coil:
Low speed fan – 2396/1870 (total/sensible) Medium fan speed – 2612/2158 (total/sensible)
BTU/h w/95°F air entering condenser coil:
Low speed fan – 2205/1704 (total/sensible) Medium fan speed – 2392/2008 (total/sensible)


21.5”L x 22.16”W x 10.33”H
Voltage Rating:
115V (20-amp dedicated circuit required); 230V (subject to availability)
81 lbs. without packaging, 90 lbs. with packaging
4.3 (running amps)
Drain Line:
1/2” ID clear plastic tubing (not provided)
Through the wall (above a doorway)
Advanced digital controller, liquid-temperature-measuring bottle probe (retractable cable)
Temp. Delta:
Can maintain a 55°F cellar temperature with up to 85°F condenser air intake temperature
Outside Venting:
Not recommended






Owner’s Manual