Through-the-Wall Wine Cellar Cooling System for Cellars Up to 1000 Cu. Ft.
The Breezaire WKL 4000 is a self-contained, through-the-wall wine cellar cooling unit designed for properly insulated wine cellars up to 1000 cubic feet.
It delivers 4000 BTUs of cooling power, operates on 115V (7 amps), and vents warm air through the rear into an adjacent space.
This model is ideal for residential wine rooms that require stable 50–59°F storage without installing a split system.
Also available inBreezaire WKL 1060for up to 140 cu. ft.,Breezaire WKL 2200for up to 265 cu. ft.,Breezaire WKL 3000for up to 650 cu. ft.,Breezaire WKL 6000for up to 1500 cu. ft.,Breezaire WKL 8000for up to 2000 cu. ft.
30-Second Decision Summary
Cooling Capacity: Up to 1000 cu. ft.
Installation Type: Through-the-wall (rear exhaust)
Electrical: 115V / 60 Hz / 7A
Noise Level: Comparable to a household refrigerator
Best For: Fully insulated, enclosed wine cellars
Not For: Open rooms, garages, glass-heavy uninsulated spaces
If your cellar meets insulation and ventilation requirements, this unit provides reliable long-term wine preservation.
Cooling Performance & Wine Protection
The WKL 4000 is engineered specifically for wine storage, not comfort cooling.
It maintains:
- Stable cellar temperatures between 50°F–59°F
- Consistent cycling to reduce temperature swings
- Automatic humidity support through evaporator design
- Low vibration operation for proper aging conditions
When installed in a properly constructed cellar, it supports long-term aging at approximately 55°F.
Real-World Sizing Guidance
| Cellar Size | Performance Expectation |
|---|---|
| 500 cu. ft. | Strong performance margin |
| 750–850 cu. ft. | Ideal operating range |
| 900–1000 cu. ft. | Upper capacity limit (must be well insulated) |
Performance may decrease if:
- Insulation is inadequate
- Vapor barrier is missing
- Door seals leak air
- Exhaust room is excessively hot
Installation Overview
The Breezaire WKL 4000 is a self-contained through-the-wall system.
-
Front side cools the cellar interior
-
Rear side exhausts warm air into an adjacent space
Installation Requirements
- Wall opening per manufacturer specification
- Rear ventilation clearance (must not be sealed)
- 115V, 60 Hz, 7 Amp electrical supply
- Proper insulation and vapor barrier
- Adequate ambient conditions in exhaust area
The unit must not vent into a sealed cavity or confined wall space.
Professional installation is recommended for optimal performance.
Noise Expectations
The WKL 4000 produces moderate operational sound similar to a standard refrigerator.
Consider a split system instead if:
- The cellar is in a main living area
- Ultra-quiet operation is required
- Heat exhaust cannot be vented properly
Key Features
- Electronic controls
- LED digital temperature display
- Automatic defrost system
- Automatic humidity management
- Rear exhaust configuration
- Commercial-grade internal components
Designed for continuous operation in dedicated wine storage environments.
Full Specifications
| Specification | Details |
|---|---|
| Dimensions (H x W x D) | 19.75″ x 14.25″ x 21.63″ |
| Capacity | Up to 1000 cu. ft. |
| Installation | Through-the-Wall |
| Electronic Controls | Yes |
| Digital Temperature Display | LED Readout |
| Humidity Control | Automatic |
| Defrost System | Automatic |
| Exhaust Direction | Rear |
| Electrical Requirements | 115 V, 60 Hz – 7 A |
| BTU Cooling | 4000 |
| Weight | 81 lbs |
| Warranty | 1 Year Labor / 5 Years Parts |
Always confirm wall depth, ventilation space, and electrical capacity prior to installation.
Manuals for Breezaire WKL 4000
- WKL 4000 Installation Manual
- Breezaire Sentry III Plus Controller Owner’s Manual
- Breezaire Warranty
Warranty & Support
The Breezaire WKL 4000 includes:
- 1-Year Labor Warranty
- 5-Year Parts Warranty
As an authorized Breezaire dealer, we provide:
- Model sizing assistance
- Installation guidance
- Troubleshooting support
- Warranty coordination
If you are unsure about sizing or installation requirements, consult us before purchasing.
When should I choose a split system instead?
Choose a split system if:
- The cellar is in a finished living space
- Exhaust heat cannot be vented properly
- You require minimal noise
- The cellar exceeds 1000 cu. ft.
Final Recommendation
The Breezaire WKL 4000 is a strong solution for properly insulated wine cellars up to 1000 cubic feet that require a self-contained, through-the-wall cooling system.
Correct sizing and proper installation are critical to performance.
If your cellar meets the structural and electrical requirements listed above, the WKL 4000 provides reliable, stable wine storage designed specifically for long-term aging.
