Our specialists review your room layout, insulation, and heat load to recommend the correct cooling system for stable temperature and reliable climate control.
WhisperKOOL Slimline LS Cooling Unit
is backordered and will ship as soon as it is back in stock.
In Stock & Ready to Ship
Estimated Delivery in 3-7 business days
Through-the-Wall Wine Cellar Cooling Unit
WhisperKOOL Slimline LS Through-the-Wall Wine Cellar Cooling Unit
Compact Luxury Series wine cellar cooling designed for above-door installation, quiet residential operation, and reliable wine preservation.
Designed for approximately 300 cu. ft. on low fan speed / 650 cu. ft. on medium fan speed
Self-contained through-the-wall design for above-door placement
Direct replacement for WhisperKOOL Slimline 2500 and Slimline 3300
Smart ECM condenser fan technology and centrifugal blowers
115V operation with 20 amp dedicated circuit required
Compact Above-Door Cooling for Residential Wine Cellars
The WhisperKOOL Slimline LS Cooling Unit is a self-contained, through-the-wall wine cellar cooling system designed for residential wine cellars where quiet operation, compact placement, and reliable wine preservation are priorities.
Built to install above a cellar doorway, the Slimline LS helps preserve valuable wall space while maintaining stable climate conditions required for proper wine storage.
This model is part of WhisperKOOL’s Luxury Series and serves as a direct replacement for the WhisperKOOL Slimline 2500 and WhisperKOOL Slimline 3300.
Important Sizing Note: Wine cellar cooling performance depends on more than cubic footage. Glass, stone, concrete, exterior walls, lighting, insulation quality, and vapor barrier construction can all affect cooling demand.
Quick Product Summary
Product Type
Self-contained through-the-wall wine cellar cooling unit
Best Placement
Above a wine cellar doorway
Recommended Cellar Size
Approx. 300 cu. ft. on low fan speed / 650 cu. ft. on medium fan speed
Fan Speeds
Low and medium
Cooling Style
Direct through-the-wall cooling
Ideal Buyer
Residential collectors, luxury homeowners, designers, and builders
Replacement For
WhisperKOOL Slimline 2500 and WhisperKOOL Slimline 3300
Best For
Residential wine cellars up to approximately 650 cubic feet
Small-to-medium private wine collections
Luxury home wine rooms
Above-door wine cellar cooling installations
Projects where a low visual profile is important
Designers and builders working with compact cellar layouts
Not Recommended For
Large commercial wine rooms exceeding practical capacity
Open-concept wine displays without a sealed cellar envelope
Poorly insulated spaces without a vapor barrier
Cellars with heavy glass exposure without heat load review
Projects requiring ducted or fully remote cooling equipment
Why Choose the WhisperKOOL Slimline LS?
Above-Door Format
Fits in the often-unused space between a wine cellar door and the ceiling to preserve wall space for racking and display features.
Dual-Capacity Cooling
Low and medium fan speed settings allow capacity adjustment based on cellar needs.
Quieter Operation
Centrifugal blowers and smart ECM condenser fan technology support quieter residential performance.
ECM Fan Technology
Self-regulating condenser fans help support system efficiency, heat dissipation, and longevity.
Improved Condensate
Updated condensate management helps support reliable operation in properly prepared cellar environments.
Digital Controller
Advanced digital controller includes system protection features and alarms for easier monitoring.
Slimline LS vs Previous Slimline Models
Feature
WhisperKOOL Slimline LS
Previous Slimline Models
Replacement Compatibility
Direct replacement for Slimline 2500 and Slimline 3300
Older Slimline platform
Fan Speeds
Low and medium
Model-dependent
ECM Condenser Fan
Yes
Older fan design
Operation
Designed for quieter performance
Standard Slimline operation
Internal Components
Updated coils, blowers, and condensate management
Previous-generation components
Controller Location
Relocated to condenser side for easier maintenance and adjustment
Older layout
Installation Requirements
The WhisperKOOL Slimline LS is a self-contained through-the-wall system. It is typically installed above the cellar doorway, allowing the evaporator side to cool the wine cellar while the condenser side exhausts heat into an adjacent interior space.
The cellar must be fully insulated and sealed.
A proper vapor barrier is strongly recommended.
The condenser side must exhaust into a suitable adjacent room with adequate ventilation.
A dedicated 20 amp electrical circuit is required.
A drain line may be required depending on installation conditions.
Heat load calculations should be performed before purchase.
Cooling Capacity and Cellar Sizing Guidance
The Slimline LS can support approximately 300 cubic feet on low fan speed and approximately 650 cubic feet on medium fan speed. These figures are useful starting points, but they should not replace a full heat load calculation.
Cellar Condition
Suitability
Well-insulated sealed cellar
Best fit for published capacity range
Moderate glass exposure
May require reduced capacity assumptions or larger system review
Heavy glass, stone, or concrete
Heat load calculation strongly recommended
Open wine display
Not recommended without specialized design review
Poor insulation or no vapor barrier
Not recommended until cellar envelope is corrected
Wine Coolers Empire offers complimentary wine cellar design planning to help you choose the right cooling system, wine racks, and product layout for your project.
This unit can cool approximately 300 cubic feet on low fan speed and up to 650 cubic feet on medium fan speed.
It is a through-the-wall, self-contained cooling system designed to be mounted between wall studs, ideally above a doorway to maximize space efficiency.
The Slimline LS operates on 115V and typically requires a dedicated 20-amp circuit.
The unit includes an advanced digital controller along with a bottle probe that reads the actual liquid temperature of wine for precise cooling management.
Yes. The Slimline LS features two fan speed settings, allowing you to adjust cooling performance depending on cellar needs.
On average, the system provides around 2600–3000 BTU/h, depending on the fan speed and ambient conditions.
The Slimline LS measures approximately 21.5\" (L) x 22.16\" (W) x 10.33\" (H) and weighs about 81 lbs without packaging."]
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We purchase a wine cellar in other store. We put the cooling unit in our wine cellar room. However, it didn't perform as well as we wanted to so we decided to look for an alternative. We discovered this store and placed a cooling unit. It works really well for us!
D
Deirdre D.
Satisfied with my Slimline LS Cooling Unit
I am very happy with my purchase. I would recommend Whisperkool to everyone who is looking to keep their wine cellar at a certain temperature.
I
Iris P.
Durable Unit!
I am very happy we bought this Whisperkool Wine Cooling Unit. We are even considering buying another one for our restaurant. Thanks again Wine Coolers Empire.
D
Dennis
Great unit
E
Elizabeth
My husband installed it last week. It was hard to carry it and we still needed help installing it. Good thing the delivery guy was very nice. He helped us carrying it inside and to position it inside our wine cellar. I know he wasn't supposed to help us but he did. We really appreciate it.
S
Shari D. Royse
Very easy to install. The instructions are straight forward. Lisa was very kind and knowledgeable. She also answered all my queries very patiently
WhisperKOOL
WhisperKOOL Slimline LS Cooling Unit
Regular price$3,415.00
Unit price
Through-the-Wall Wine Cellar Cooling Unit
WhisperKOOL Slimline LS Through-the-Wall Wine Cellar Cooling Unit
Compact Luxury Series wine cellar cooling designed for above-door installation, quiet residential operation, and reliable wine preservation.
Designed for approximately 300 cu. ft. on low fan speed / 650 cu. ft. on medium fan speed
Self-contained through-the-wall design for above-door placement
Direct replacement for WhisperKOOL Slimline 2500 and Slimline 3300
Smart ECM condenser fan technology and centrifugal blowers
115V operation with 20 amp dedicated circuit required
Compact Above-Door Cooling for Residential Wine Cellars
The WhisperKOOL Slimline LS Cooling Unit is a self-contained, through-the-wall wine cellar cooling system designed for residential wine cellars where quiet operation, compact placement, and reliable wine preservation are priorities.
Built to install above a cellar doorway, the Slimline LS helps preserve valuable wall space while maintaining stable climate conditions required for proper wine storage.
This model is part of WhisperKOOL’s Luxury Series and serves as a direct replacement for the WhisperKOOL Slimline 2500 and WhisperKOOL Slimline 3300.
Important Sizing Note: Wine cellar cooling performance depends on more than cubic footage. Glass, stone, concrete, exterior walls, lighting, insulation quality, and vapor barrier construction can all affect cooling demand.
Quick Product Summary
Product Type
Self-contained through-the-wall wine cellar cooling unit
Best Placement
Above a wine cellar doorway
Recommended Cellar Size
Approx. 300 cu. ft. on low fan speed / 650 cu. ft. on medium fan speed
Fan Speeds
Low and medium
Cooling Style
Direct through-the-wall cooling
Ideal Buyer
Residential collectors, luxury homeowners, designers, and builders
Replacement For
WhisperKOOL Slimline 2500 and WhisperKOOL Slimline 3300
Best For
Residential wine cellars up to approximately 650 cubic feet
Small-to-medium private wine collections
Luxury home wine rooms
Above-door wine cellar cooling installations
Projects where a low visual profile is important
Designers and builders working with compact cellar layouts
Not Recommended For
Large commercial wine rooms exceeding practical capacity
Open-concept wine displays without a sealed cellar envelope
Poorly insulated spaces without a vapor barrier
Cellars with heavy glass exposure without heat load review
Projects requiring ducted or fully remote cooling equipment
Why Choose the WhisperKOOL Slimline LS?
Above-Door Format
Fits in the often-unused space between a wine cellar door and the ceiling to preserve wall space for racking and display features.
Dual-Capacity Cooling
Low and medium fan speed settings allow capacity adjustment based on cellar needs.
Quieter Operation
Centrifugal blowers and smart ECM condenser fan technology support quieter residential performance.
ECM Fan Technology
Self-regulating condenser fans help support system efficiency, heat dissipation, and longevity.
Improved Condensate
Updated condensate management helps support reliable operation in properly prepared cellar environments.
Digital Controller
Advanced digital controller includes system protection features and alarms for easier monitoring.
Slimline LS vs Previous Slimline Models
Feature
WhisperKOOL Slimline LS
Previous Slimline Models
Replacement Compatibility
Direct replacement for Slimline 2500 and Slimline 3300
Older Slimline platform
Fan Speeds
Low and medium
Model-dependent
ECM Condenser Fan
Yes
Older fan design
Operation
Designed for quieter performance
Standard Slimline operation
Internal Components
Updated coils, blowers, and condensate management
Previous-generation components
Controller Location
Relocated to condenser side for easier maintenance and adjustment
Older layout
Installation Requirements
The WhisperKOOL Slimline LS is a self-contained through-the-wall system. It is typically installed above the cellar doorway, allowing the evaporator side to cool the wine cellar while the condenser side exhausts heat into an adjacent interior space.
The cellar must be fully insulated and sealed.
A proper vapor barrier is strongly recommended.
The condenser side must exhaust into a suitable adjacent room with adequate ventilation.
A dedicated 20 amp electrical circuit is required.
A drain line may be required depending on installation conditions.
Heat load calculations should be performed before purchase.
Cooling Capacity and Cellar Sizing Guidance
The Slimline LS can support approximately 300 cubic feet on low fan speed and approximately 650 cubic feet on medium fan speed. These figures are useful starting points, but they should not replace a full heat load calculation.
Cellar Condition
Suitability
Well-insulated sealed cellar
Best fit for published capacity range
Moderate glass exposure
May require reduced capacity assumptions or larger system review
Heavy glass, stone, or concrete
Heat load calculation strongly recommended
Open wine display
Not recommended without specialized design review
Poor insulation or no vapor barrier
Not recommended until cellar envelope is corrected
Wine Coolers Empire offers complimentary wine cellar design planning to help you choose the right cooling system, wine racks, and product layout for your project.
