Product Overview
WhisperKOOL Platinum Split 4000: Quick Decision Summary
Choose the Platinum Split 4000 Ductless when your wine cellar is approximately 1,000 cubic feet or less, the room is properly insulated and vapor sealed, and a visible evaporator grille inside the cellar is acceptable. It is particularly useful when the condenser needs to be installed remotely from the conditioned space.
| Best For |
Residential wine cellars, light commercial cellars, modern wine rooms, and glass wine walls where a visible evaporator grille is acceptable. |
| Rated Cellar Size |
Up to approximately 1,000 cu. ft. when the room is properly insulated, sealed, and protected with a vapor barrier. |
| Cooling Output |
3,650 BTU/h at the published 85°F condenser air intake condition. |
| System Type |
Ductless split cooling system with an in-cellar evaporator and remote condenser. |
| Professional Installation |
Required. A licensed HVAC-R technician must install and commission the system. |
Things to Know Before Ordering
- The cellar should not exceed approximately 1,000 cubic feet under the stated sizing conditions.
- The room must be properly insulated and sealed.
- A vapor barrier is required.
- The ductless evaporator grille remains visible inside the cellar.
- The condenser can be installed remotely up to approximately 100 feet away.
- Glass walls, high ceilings, exterior exposure, and warm ambient conditions can increase the cooling load.
- Professional HVAC-R installation is required.
Buyer Fit
Is the WhisperKOOL Platinum Split 4000 Right for Your Wine Cellar?
This System Is Ideal For:
- Modern glass wine walls
- Residential or light commercial cellars
- Projects requiring remote condenser placement
- Installations where a visible evaporator grille is acceptable
This System Is Not Recommended For:
- Cellars exceeding 1,000 cubic feet
- Poorly insulated rooms
- Spaces without a vapor barrier
- DIY installation without a licensed HVAC-R technician
- Projects requiring a fully hidden cooling system — choose a ducted split system instead
Sizing recommendation: If your wine cellar includes extensive glass, high ceilings, exterior-facing walls, or significant heat exposure, verify the actual heat load before selecting the system.
System Design
How This Split System Works
The Platinum Split 4000 uses two primary components:
| Evaporator |
Fan coil unit installed inside the wine cellar. |
| Condenser |
Condensing unit installed remotely up to approximately 100 feet away in a suitable outdoor, attic, or mechanical-room location. |
Benefits of Separating the Components
- Reduces mechanical noise inside the cellar
- Supports stable cellar temperature control
- Allows greater installation flexibility
The ductless version uses a visible evaporator grille inside the wine cellar.
Key Features
Key Features of the Platinum Split 4000
2-Speed Operation
The fan can be adjusted to help match system operation to the cooling load and installation conditions.
KDT Digital Touch Display
- Installable up to 50 feet away
- Includes system alerts and performance monitoring
Bottle Probe Temperature Sensor
The bottle probe measures liquid temperature rather than relying only on surrounding air temperature, helping the control system respond to conditions that more closely represent the stored wine.
Optional 24V Thermostat Conversion Kit
The optional conversion kit allows the system to be used with a compatible third-party 24V thermostat for remote monitoring and alerts.
24V Thermostat Configuration Notice
Using the 24V thermostat conversion kit removes the standard WhisperKOOL display and bottle probe configuration. A compatible third-party thermostat must be supplied separately.
Installation
Installation Requirements
Installation must be performed by a qualified HVAC-R technician. Improper installation voids the warranty.
Confirm These Requirements Before Installation
- Minimum R-19 wall insulation
- Minimum R-30 ceiling insulation
- Vapor barrier installed on the warm side
- Dedicated 115V, 15-amp circuits
- Proper refrigerant line sizing
What Happens When Insulation Requirements Are Not Met?
- Continuous system runtime
- Inability to maintain 55°F
- Premature compressor wear
Construction requirement: The cooling system cannot compensate for an improperly constructed cellar. Insulation, vapor control, air sealing, and correct equipment sizing are essential to rated performance.
Technical Data
Technical Specifications
| Model |
Platinum Split 4000 |
| Recommended Cellar Size |
Up to 1,000 cu. ft. |
| BTU/h |
3,650 at 85°F condenser intake |
| Airflow |
270 CFM |
| Refrigerant |
R-134a |
| Horsepower |
1.43 HP |
Electrical Requirements
| Evaporator |
115V — 15 amp dedicated circuit required |
| Condenser |
115V — 15 amp dedicated circuit required |
Amps
| Evaporator |
1 running amp |
| Condenser |
LRA 43 / RLA 8 |
Dimensions
| Evaporator |
16.1” L × 20.5” W × 15.5” H |
| Condenser |
16.08” L × 16.23” W × 12.61” H |
Weight
| Evaporator |
57 lbs |
| Condenser |
56 lbs |
Line Set Requirements
| Liquid Line |
1/4” |
| Suction Line — Under 50 ft |
1/2” |
| Suction Line — Over 50 ft |
5/8” |
Drain Line
½” ID clear plastic tubing — not included.
Installation Distance
The condenser may be installed up to approximately 100 feet from the evaporator.
Warranty
Two-Year Limited Warranty.
Model Comparison
WhisperKOOL Platinum Split 4000 vs Split 8000
| Specification |
Split 4000 |
Split 8000 |
| Cellar Size |
Up to 1,000 cu. ft. |
Up to 1,750 cu. ft. |
| BTU/h |
3,650 |
5,211 |
| Horsepower |
1.43 HP |
2 HP |
| Condenser Circuit |
15 amp |
20 amp |
| Maximum Distance |
100 ft |
100 ft |
When to consider the Split 8000: Choose the larger model when the cellar exceeds 1,000 cubic feet or when glass area, ceiling height, ambient conditions, or other construction factors create a larger cooling load.
Optional Add-Ons
Optional Upgrades
UV-C Light Technology
Recommended for high-humidity environments where additional reduction of microbial growth inside the cooling system is desired.
Exterior Protective Housing
Required for outdoor condenser installations.
Condenser Coil Coating
Recommended for coastal or salt-air environments where additional condenser-coil protection is desired.
Downloads
WhisperKOOL Platinum Split 4000 Ductless Manuals & Resources
Review the applicable owner, technician, specification, and warranty documentation before installation and commissioning.
Questions & Answers
Frequently Asked Questions
Can I install this system myself?
No. Installation must be performed by a licensed HVAC-R technician. Improper installation voids the warranty and may cause system failure.
Do I need a vapor barrier for this system to work properly?
Yes. Without a vapor barrier, warm air and moisture will infiltrate the cellar, forcing the unit to overwork and potentially causing condensation and mold issues.
Can the condenser be installed outdoors?
Yes. The condenser may be installed outdoors up to 100 feet away from the evaporator. An exterior protective housing is recommended for weather protection.
How do I know if I should upgrade to the Split 8000?
Upgrade to the 8000 model if your cellar exceeds 1,000 cu. ft., has extensive glass walls, has a ceiling height above 9 feet, or is exposed to consistently high ambient temperatures.
What happens if I install the Split 4000 in a cellar larger than 1,000 cubic feet?
The system may run continuously and fail to maintain 55°F. Oversizing slightly is safer than undersizing, because continuous runtime can shorten compressor life.
Expert Sizing Guidance
Professional Sizing Recommendation
If you are unsure whether the Platinum Split 4000 is properly sized for your project, verify the cellar's insulation R-values, glass surface area, ceiling height, and ambient climate conditions before purchasing.
Correct system sizing helps the cooling equipment maintain the intended cellar conditions without excessive runtime or unnecessary mechanical stress.
