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WhisperKOOL Slimline 3300 Wine Cellar Cooling Unit

WhisperKOOLSKU: U-WKSL3300-115-2

Sale price$1,949.00

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WhisperKOOL Slimline 3300 Wine Cellar Cooling Unit Review 

WhisperKOOL Slimline 3000 Wine Cellar Cooling Unit is Discontinued. Replaced by WhisperKOOL Slimline LS Cooling Unit.

PLEASE NOTE: We will be phasing out the 9000 and 12000 110V condensers on 10/01/2023 or sooner. We will continue to support controllers through the two-year warranty period. All other replacement part requests will be directed to Copeland.

The WhisperKOOL Slimline 3000 Wine Cellar Cooling Unit is one of the quietest and most compact through-the-wall wine cellar cooling units (self-contained), specifically designed to fit into the often unused space between the cellar door and the ceiling. This allows the unit to fit snugly above the cellar door, providing efficient cooling without taking up much space and having a low visual profile.

The system has a WhisperKOOL Platinum Series controller with Advanced System Protection Technology. This ensures effective performance and a long cooling unit lifespan through several carefully placed monitoring probes. The Slimline is energy-efficient and can cool wine cellars up to 650 cubic feet while using less power than traditional units.

The most economical and easiest to install are through-the-wall wine cellar cooling units(self-contained). They are designed to mount between the studs of an existing wall and do not need to be installed by a licensed HVACR technician. Cool air is blown into the cellar from one end of the system, while the other end exhausts heat into an adjacent room.

Want to see wine cooler units in this installation type? Check out  Self Contained Through-The-Wall Wine Cooling Units. You can also browse all our WhisperKOOL Wine Cellar Cooling Systems

Looking for the best wine racks? Check out Ultra Wine Racks & Cellars for unique and modern wine racks for your wine cellar!

WHY BUY FROM US: Wine Coolers Empire is a trusted dealer of specialty wine cellar air conditioners, commercial wine cellar refrigeration units, and residential wine cellar coolers. More WhisperKOOL wine cellar cooling unit reviews can be found on our Customer Reviews page.

Contact us for any questions or concerns. For information on order processing, shipping options, and delivery times, please visit our Shipping Policy.

WhisperKOOL Slimline 3000 is Discontinued. Replaced by WhisperKOOL's Newest Luxury Series. Buy the WhisperKOOL Slimline LS Cooling Unit today!




  • Through-the-wall installation.
  • 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.





  • Model: Slimline 3300
  • Cellar Size: Approx. 650 cu.ft. when wine cellar is fully insulated and sealed with a proper  vapor barrier
  • BTU/h (85°F condenser air intake temperature): 2049
  • Dimensions (L x W x H): 19" x 22" x 10.25"
  • Refrigerant: R-134a
  • HP: 1/6
  • Voltage Rating: 115V (20-amp dedicated circuit required); 230V (subject to availability)
  • Weight: 54 lbs
  • Amps: 3.5 (running amps)
  • Drain Line: 3/8” ID clear plastic tubing (NOT PROVIDED)
  • Installation: Through the wall (above a doorway)
  • Thermostat: 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
  • Ducting Options: Exhaust air can be ducted using the OPTIONAL ducting kit
  • WhisperKOOL Warranty: Two-year limited warranty (parts and labor) / Five-year limited warranty (compressor)

*NOTE: WhisperKOOL wine cooling units work best in a well-insulated and sealed room with a proper vapor barrier. Every wine cellar is different and has its own cooling needs. It's important to perform heat load calculations before choosing a cooling system for wine cellars.





The BTU/h value range shown here is an estimate and not a guarantee. There may be instances where a cellar design requires a larger unit due to variables not included in the calculation. These variables can be building materials (such as glass, stone, concrete, etc.) that do not provide enough insulation to maintain the ideal wine cellar environment.

We recommend purchasing a unit with a higher capacity to compensate for these unforeseen variables. Choosing an undersized unit may result in premature failure and may not be able to achieve your desired wine cellar temperature.


Read more to LEARN MORE! 📚

Welcome to our Special Section,

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We understand that buying this unit is a significant investment, so we make sure you'll get the right unit for your wine room.

We have our Professional Team that is ready to assist you!

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Customer Reviews

Based on 6 reviews
John Thompson
Doing a good job

Very happy with the performance so far. Did a fast job of getting my cellar to the right temp.

Ralph Houkom
Exactly as advertised

The unit appears to be what it is advertised to be, aesthetically handsome, fairly quiet, and easy to install. It hasn't operated a lot yet as it's a back- up unit. Overall, very satisfied.


Works great in my closet type cellar. Very easy to operate

Michael Lawrence
Nice cooler but very noisy

Installed in an under the stairway cellar. Cools nicely but very noisy in the living space.

My father is happy

I installed a wine cellar in my parent's house secretly when they where on a cruise. When they came back my dad is so happy


I've been using this cooling unit in my small cabinet sized wine cellar which is located on my living room. It does the job. Maintains the temperature