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Wine Guardian SP50 Pro Ducted Split Wine Cooling System

Wine Guardian  |  SKU: 99H0205-20 + 99H0298-11

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Fan-Coil Options
Condenser Options

Options:

*Heater

Protects wine cellars from dangerously low temperatures. Adjustable activation from 2 - 6°F (-17 - -14°C) below your setpoint.

**Extreme Climate Protection Bundle

For Self-Contained Ducted systems: Contains an integral compressor crankcase heater and controls to protect the system against low temperatures (required when inlet air to the condenser coil is below 40°F/5°C). The bundle also contains an integral high capacity condenser fan and coil for operation at elevated ambient temperatures. This bundle should be considered when inlet air to the condenser coil is above 100°F/38°C (condenser air inlet cannot exceed 120°F/49°C).

For Ducted Split systems: Unit protection in extreme climate conditions (on the condenser section only). It is required for continuous operation in climates that fall below 20°F. Enables the system to operate in temperatures as low as -20°F.

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Wine Guardian Sentinel Series · Ducted Split Cooling System

Wine Guardian SP50 Pro Ducted Split Wine Cellar Cooling System

The Wine Guardian SP50 Pro is a mid-capacity ducted split wine cellar cooling system designed for residential and commercial wine cellars requiring quiet operation, hidden equipment placement, and precise wine storage climate control. Its split configuration separates the fan coil from the condensing unit, allowing the condenser to be installed remotely while conditioned air is delivered to the cellar through ductwork.

The SP50 Pro is commonly selected for properly constructed wine cellars from approximately 650 to 3,000 cubic feet, depending on insulation quality, vapor barrier integrity, glass exposure, ambient conditions, and duct design.

Quick Product Overview

Model Wine Guardian SP50 Pro
System Type Ducted split wine cellar cooling system
Series Sentinel Series
Cooling Capacity 2,700–6,458 BTU/h
Recommended Cellar Volume 650–3,000 ft³, subject to cooling load calculation
Temperature Range 52°F–70°F / 11°C–21°C
Humidity Control Optional integrated or freestanding humidification
Installation Type Professional split-system installation with ductwork and refrigerant line set
Best Use Mid-size wine cellars, tasting rooms, commercial storage spaces, and projects requiring quiet hidden cooling

Expert Product Overview

The Wine Guardian SP50 Pro is engineered for wine cellars where a standard self-contained wine cooling unit is not the best fit. Instead of placing the entire cooling system in or near the cellar, the SP50 Pro uses a split design with a separate fan coil and condensing unit. This allows the noisy and heat-producing condenser to be located away from the wine room while the fan coil distributes conditioned air through ductwork.

This configuration is especially valuable for luxury residential cellars, commercial wine rooms, tasting spaces, and archive storage rooms where aesthetics, low noise, and stable conditions matter. The SP50 Pro supports a broad operating range, optional humidity management, 24V smart integration, and service-friendly access for long-term performance.

Wine Guardian ducted split unit with labeled features Wine Guardian Dealer

Is the Wine Guardian SP50 Pro Right for Your Wine Cellar?

Best For

  • Properly insulated wine cellars from approximately 650 to 3,000 ft³
  • Residential and commercial wine storage projects
  • Luxury cellars where equipment should remain hidden
  • Installations requiring quiet cellar-side operation
  • Projects where the condenser can be placed remotely
  • Wine rooms requiring ducted supply and return airflow
  • Cellars where optional humidity control may be needed

Not Recommended For

  • DIY installations without a qualified refrigeration professional
  • Small wine closets better suited to a compact system
  • Projects without a suitable condenser location
  • Cellars without insulation and vapor barrier construction
  • Applications that require a simple through-the-wall replacement
  • Installations where ductwork cannot be planned correctly
  • Oversized commercial rooms that require a larger cooling load

Will the SP50 Pro Fit My Wine Cellar?

The SP50 Pro is rated for wine cellars from approximately 650 to 3,000 cubic feet, but actual performance depends on the full cooling load of the room. Cellar volume alone is not enough to choose the correct cooling unit.

Before selecting the SP50 Pro, evaluate insulation, vapor barrier quality, glass exposure, ceiling height, door sealing, ambient temperature around the cellar, duct length, and condenser placement. A cellar with large glass walls, weak insulation, or high ambient heat may require a larger model even if its cubic footage appears to fall within the SP50 Pro range.

Important: Always verify the cellar load before purchasing. An undersized system can run continuously, struggle to maintain temperature, and shorten equipment life.

Installation Requirements

The SP50 Pro is a professional-grade ducted split system and should be installed by a qualified refrigeration or HVAC professional familiar with wine cellar climate control.

Cellar Construction

The wine cellar must be properly insulated and sealed with a continuous vapor barrier. Cooling performance will fail in unsealed or poorly insulated spaces.

Split System Layout

The fan coil and condensing unit require proper placement, refrigerant line routing, service access, and condensate management.

Duct Planning

Supply and return ductwork must be designed for correct airflow, low restriction, and even temperature distribution inside the cellar.

Professional installation is required because the system uses separate components, refrigerant connections, electrical connections, ductwork, and condensate handling.

Key Features & Benefits

Ducted Split Design

Separates the fan coil and condenser for flexible placement, quieter cellar operation, and reduced equipment visibility inside the wine room.

Temperature Control

Supports wine storage temperatures from 52°F to 70°F, making it suitable for wine, food, and archival storage applications.

Optional Humidification

Compatible with integrated or freestanding humidification options to support long-term cork and label preservation.

Hidden Equipment

Ducted delivery keeps visible cooling equipment out of the cellar for cleaner design integration.

24V Smart Integration

Designed for compatibility with smart home systems and building management controls.

Service-Friendly Access

Sight glass, service ports, and quick-access panels simplify inspection and maintenance for qualified technicians.

Advantages and Limitations

Advantages

  • Quiet operation compared with many cellar-side self-contained systems
  • Remote condenser placement for better heat and noise management
  • Fully ducted installation keeps equipment hidden
  • Suitable for mid-size residential and commercial wine cellars
  • Optional humidity control for enhanced cellar management
  • Smart integration readiness for modern homes and commercial facilities

Limitations

  • Requires professional refrigeration installation
  • Requires refrigerant line set between components
  • Requires proper duct design and airflow planning
  • Higher installation complexity than self-contained systems
  • Not appropriate for uninsulated or unsealed spaces
  • May not be the correct choice for very small wine closets

Cooling System Control and Monitoring

The Wine Guardian Ducted Split wine cellar cooling system features enhanced refrigeration controls that help maintain precise temperature and humidity management. Its control platform allows users to monitor cellar conditions and make adjustments to maintain a stable wine storage environment.

For projects requiring remote sensing or expanded control options, the SP50 Pro can be paired with compatible Wine Guardian sensors and monitoring accessories. This makes it a strong option for owners, builders, designers, and cellar professionals who need a system that can support more advanced cellar management.

Optional Humidity Management

Humidity control is important in wine cellars because overly dry conditions can affect corks, while excessive moisture can contribute to mold, mildew, and label damage. The SP50 Pro supports optional humidification to help maintain more stable relative humidity when the cellar design and local climate require it.

Wine Guardian humidification options include integrated or freestanding solutions. Selection should be based on cellar size, climate, target humidity range, and installation layout.

Wine Guardian ducted split wine cooling system installed outside a modern wine cellar with separate outdoor condensing unit Wine Guardian Dealer

Optional Accessories

What’s Included

  • SP50 Pro split fan coil and condensing unit
  • Interchangeable duct collars
  • Built-in smart control electronics
  • Installation and maintenance manual

Technical Specifications

Model SP50 Pro
Line Frequency 60 Hz
Cooling Capacity 2,700–6,458 BTU/h
Recommended Volume 650–3,000 ft³
Temperature Range 52°F–70°F / 11°C–21°C
Fan Coil Dimensions 23.81" L × 25" W × 19.65" H
Condenser Dimensions 34" L × 12.3" W × 26.07" H
Fan Coil Weight 54 lbs
Condenser Weight 75 lbs
Fan Coil Electrical 115/1/60
Condenser Electrical 208–230/1/60
System Configuration Ducted split fan coil with remote condensing unit

Product Videos

These Wine Guardian videos provide additional context on ducted split system design, installation flexibility, and Sentinel Series features.

Brochures, Manuals & Technical Files

Maintenance of the Wine Guardian SP50 Pro

Regular maintenance helps the SP50 Pro maintain airflow, cooling capacity, humidity performance, and long-term reliability. Maintenance should be performed according to the product manual and by a qualified professional when refrigeration service is required.

  • Replace or clean filters: Check air filters regularly to maintain airflow and prevent dust buildup.
  • Inspect evaporator and condenser coils: Dirty coils reduce efficiency and can increase system run time.
  • Check refrigerant performance: Low refrigerant or incorrect charge can prevent the system from maintaining target cellar temperature.
  • Inspect ductwork: Leaks, crushed ducts, or poorly sealed ducts reduce system performance.
  • Monitor humidity levels: Verify that cellar humidity remains within the desired wine storage range when humidification is used.
  • Schedule professional service: Have the fan coil, condenser, controls, condensate drainage, and refrigeration components checked periodically.

Related Wine Guardian Split System Models

The SP50 Pro sits between smaller and larger Sentinel Series ducted split models. Choose the model based on the calculated cooling load, cellar construction, duct design, and installation conditions.

Model Best Use
Wine Guardian SP25 Pro Smaller cellars and lower cooling loads requiring ducted split performance
Wine Guardian SP50 Pro Mid-size wine cellars requiring quiet hidden cooling and remote condenser placement
Wine Guardian SP88 Pro Larger cellars or more demanding cooling loads
Wine Guardian SP200 Pro Large commercial or high-load wine storage applications

Related Wine Cellar Cooling Resources

Why Professionals Choose Wine Guardian Split Systems

  • Made in the USA and designed for dedicated wine preservation environments
  • Split-system architecture supports quieter operation and flexible equipment placement
  • Triple-insulated housing helps reduce heat loss and condensation risk
  • UL-rated composite shell, aluminum frame, and coated coils support long-term durability
  • 24V controls support smart home and building management integration
  • Service-focused design simplifies access for qualified maintenance professionals

Expert Recommendation

Choose the Wine Guardian SP50 Pro when you need a ducted split cooling system for a properly constructed mid-size wine cellar and want quiet operation, hidden equipment, and a remotely located condenser. It is best suited for projects where duct design, refrigerant piping, and professional installation can be planned before purchase.

Consider the SP25 Pro for smaller cellars, or the SP88 Pro or SP200 Pro for larger spaces or higher cooling loads.


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📚 Frequently Asked Questions (FAQs)

The SP50 is built to cool specialty storage rooms up to 2,110 cubic feet, depending on the quality of insulation and the contents’ climate sensitivity.

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