["Do I need a vapor barrier for this system?

Yes. A continuous vapor barrier is required to prevent moisture infiltration. Without it, condensation can form within walls and ceiling cavities, leading to mold, insulation failure, and cooling inefficiency.

Can the condenser be installed outdoors?

Yes, but only with appropriate exterior housing and ventilation clearance. The condenser must receive adequate airflow and cannot be placed in sealed or overheated environments.

What happens if my cellar is not fully insulated?

The system may run continuously, struggle to maintain 55°F, and experience premature wear. Cooling systems are designed for sealed environments, not unfinished basement spaces.

How far can the condenser be from the evaporator?

Up to 100 line feet. Longer distances may reduce efficiency and require professional load verification.

Is this quieter than a through-the-wall wine cooling unit?

Yes. Because the compressor is located outside the cellar, interior noise levels are reduced compared to self-contained systems.

How do I choose between the 4000 and 8000 models?

Select the 4000 for cellars under 1,000 cu. ft. with minimal glass exposure. Select the 8000 for cellars between 1,200–2,000 cu. ft., higher ambient temperatures, or significant glass/stone surfaces. When uncertain, perform a cooling load calculation."]

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Bestseller

WhisperKOOL Ceiling Mount 4000 Ductless Split System

Name: WhisperKOOL Ceiling Mount 4000 Ductless Split System
Brand: WhisperKOOL
SKU: S-WKCM4000-115-CW5
Price: 8295.00 USD
Availability: OutOfStock

WhisperKOOL | SKU: S-WKCM4000-115-CW5

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Is This the Right Cooling System for Your Wine Cellar?

The WhisperKOOL Ceiling Mount Split System is designed for homeowners and contractors who want minimal visual impact with professional-grade cooling performance.

It is best for:

Modern glass wine walls
Cellars with limited wall space
New builds or remodels with ceiling cavity access
Fully insulated, sealed wine rooms

It is not ideal for:

Uninsulated basements
Rooms without a vapor barrier
DIY installation
Cellars exceeding 2,000 cubic feet

If your cellar is properly constructed and within capacity range, this system delivers discreet, stable 55°F storage even in warm climates.

Available in WhisperKOOL Ceiling Mount 4000 220V Condenser & WhisperKOOL Ceiling Mount 4000 110V Condenser for 1000 cu.ft.

Other Sizes: WhisperKOOL Mini Ceiling Mount for 500 cu.ft. wine cellar, WhisperKOOL Ceiling Mount 8000 for 2000 cu.ft. wine cellar, WhisperKOOL Ceiling Mount Twin 9000 for 3000 cu.ft. wine cellar and WhisperKOOL Ceiling Mount Twin 12000 for 3500 cu. ft.

4000 vs 8000 — Which Model Do You Need?

Model	Recommended Cellar Size*	BTU Output (85°F condenser intake)	Horsepower
4000	Up to 1,000 cu. ft.	4,000 BTU/h	1.57 HP
8000	Up to 2,000 cu. ft.	5,254 BTU/h	2.06 HP

*Assumes fully insulated enclosure with proper vapor barrier.

If your cellar includes:

Large glass panels
Stone or concrete surfaces
High ambient exposure
Poor door sealing

You may require upsizing beyond cubic footage guidelines.

When in doubt, confirm via cooling load evaluation.

How the Ceiling Mount Split System Works

This is a ductless split cooling system:

The evaporator installs inside the cellar ceiling.
The condenser installs remotely (garage, attic, utility room, or outdoors with housing).
Refrigerant lines connect both units (up to 100 line feet).
No ductwork required.

Because the compressor sits outside the cellar, interior noise is reduced compared to through-the-wall systems.

Performance Capabilities

Maintains 55°F cellar temperature
Designed to operate with condenser air intake temperatures up to 110°F
Suitable for warm-climate installations (with proper ventilation)

CFM: 321
Refrigerant: R-134a

Wine cooling systems are engineered for temperature stability, not rapid cooling like comfort HVAC.

Installation Requirements

Professional HVAC-R installation is required.
Failure to use a licensed technician voids the warranty.

Minimum cellar requirements:

Full insulation
Continuous vapor barrier
Airtight door seal
Dedicated 115V circuits
Proper drainage planning

Improper room preparation is the most common cause of system failure.

Technical Specifications

Cooling & Electrical

Specification	Model 4000	Model 8000
Capacity	Up to 1,000 cu. ft.	Up to 2,000 cu. ft.
BTU/h (85°F intake)	4,000	5,254
Horsepower	1.57 HP	2.06 HP
CFM	321	321
Evaporator Voltage	115V (15-amp dedicated circuit required)	Same
Condenser Voltage	115V (15-amp dedicated circuit required)	Same
Evaporator Amps	1 (running)	1 (running)
Condenser Amps	LRA 43 / RLA 8	LRA 43 / RLA 8

Dimensions

Evaporator: 35.75” L x 12.75” H x 14.5” W

Condenser: 16.08” L x 16.23” W x 12.61” H

Confirm framing depth and service clearance before installation.

Weight

Component	4000	8000
Evaporator	80 lbs	80 lbs
Condenser	56 lbs	66 lbs

Drainage

¼” ID clear plastic tubing (not included).
Drain slope must be properly pitched to prevent backup.

Line Set Distance

Maximum distance between evaporator and condenser: 100 line feet

Longer runs may affect performance and require professional confirmation.

Thermostat & Monitoring

Includes:

Advanced digital touch display (50 ft. cable)
Liquid-temperature bottle probe (50 ft. cable)

The bottle probe measures wine liquid temperature rather than air, improving stability and reducing short cycling.

Manuals for WhisperKOOL Ceiling Mount 4000 Ductless Split:

Please click below to read and download the owner manual for this cooling system.

Best For

Contemporary residential wine cellars
Glass wine walls
Remodels with ceiling access
Projects prioritizing low visual impact

Not Recommended For

DIY installers
Rooms lacking vapor barrier
Commercial cellars requiring redundancy
Cellars above 2,000 cu. ft.

Common Installation Mistakes to Avoid

Skipping vapor barrier
Installing condenser in unventilated space
Undersizing for high-glass rooms
Improper drain slope
Sharing circuits with other appliances

Wine cooling systems require environmental preparation as much as mechanical installation.

Warranty

Two-Year Limited Warranty (Parts & Labor)
Valid only when installed by licensed HVAC-R technician.

Professional Recommendation

Before purchasing, confirm:

Cubic footage
Insulation R-value
Vapor barrier presence
Condenser placement location
Electrical availability

Cooling system mis-sizing leads to condensation issues, excessive runtime, and shortened lifespan.

Final Call to Action

Not sure which model is right for your cellar?

Request a Cooling Load Evaluation to confirm sizing before purchase.

Designing a Wine Cellar? Let’s get it right.