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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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SENTINEL SERIES · Ducted Split System

SP50 Ducted Split Wine Cellar Cooling Unit

The SP50 is a Pro-grade two-piece wine cellar cooling system with a separate ductable fan-coil and remote condenser, rated at 6,300 BTU/h and built to hold a wine room at 55°F to 58°F.

Because the evaporator and condenser are two separate units, the SP50 is Wine Guardian's most flexible system to install: the condenser can be placed where venting is easy while the fan-coil ducts cool air into the cellar. It is sized for mid-sized residential and commercial wine rooms of roughly 650 to 3000 cubic feet, and suits mechanical rooms with little space, hard-to-exhaust condenser air, or long duct runs.

Every system ships with a coated evaporator coil, a Wireless2Base remote interface controller, aluminum chassis with UL-rated composite panels, and Wine Guardian fail-safe protection. With the optional serving-temperature control the system can cool as low as 45°F. The Pro configuration uses 24-volt control for integration with external thermostats and building systems. As an authorized Wine Guardian dealer, we list the SP50 with full manufacturer specifications. Installation requires a qualified contractor; final sizing should be confirmed with the Wine Guardian cooling calculator.

6,300 BTU/h
Cooling Capacity
650–3000 ft³
Cellar Volume
2-piece
Split System
115/1/60
Electrical
Fit Check

Is the SP50 Right for Your Cellar?

✓ Ideal For

  • Mid-sized wine cellars, roughly 650 to 3000 cubic feet
  • Cellars where a self-contained unit will not fit or venting is restricted
  • Installs needing the condenser in a different location than the fan-coil (long duct runs, tight mechanical rooms)
  • Projects integrating with external 24-volt thermostats or building controls

✕ Consider Another Model If

  • You have room for a self-contained ducted unit (simpler single-box install)
  • Running separate refrigerant lines between two units is not feasible
Key Features
Feature What it means for your cellar
Two-piece split design Separate ductable fan-coil and remote condenser install in different locations, so the system fits where a single-box unit cannot.
Perfectly paired condenser The outdoor-rated condensing unit is engineered and manufactured by Wine Guardian to work specifically with the fan-coil for reliable matched performance.
Most flexible installation Handles mechanical rooms with little space, hard-to-exhaust condenser air, and long duct runs better than any other Wine Guardian configuration.
Coated evaporator coil Protects the evaporator side against corrosion for durable performance over a long service life.
Wireless2Base remote interface controller Monitors temperature and humidity continuously and corrects conditions before your wine is affected; place it in a kitchen, den, or elsewhere.
Precision control (±1°F / ±10% RH) Holds 55°F to 58°F, with optional serving-temperature control down to 45°F and an optional humidifier for 55% to 65% relative humidity.
Aluminum chassis with UL-rated composite panels UL-rated composite panels are roughly five times stronger than before and resist dents and scratches during shipping and installation.
Field-serviceable, multi-panel access Captive quarter-turn fasteners let panels, duct collars, and grille remove in a couple of turns, so service happens on-site without returning the unit to the factory.

Built-in protection: remote air sensing checks conditions continuously and adjusts before temperature or humidity drift can affect the collection.

How Quiet Is It

Why a Ducted Split Keeps the Cellar Quiet

Wine Guardian does not publish a single decibel rating for ducted split systems. The quiet comes from the split architecture: the noisy condenser sits outside or in a remote mechanical space, and the fan-coil ducts cool air into the cellar, so no compressor runs inside the wine room.

  • The condenser installs away from the cellar, even outdoors, removing its noise from the space.
  • The fan-coil mounts outside the wine room and connects through insulated ductwork.
  • Flexible ductwork absorbs air noise, and sound drops further with each duct turn.
Full Specifications
ModelSP50
SeriesSentinel Series
System typeTwo-piece ducted split (fan-coil + condenser)
Line frequency60 Hz
Rated cooling capacity6,300 BTU/h (at 80°F ambient)
Recommended cellar volume650–3000 ft³
Storage temperature range55°F to 58°F
Serving-temperature optiondown to 45°F
Humidity (with optional humidifier)55% to 65%
Control accuracy±1°F / ±10% RH
RefrigerantR-134A
Control voltage24 V (thermostat by others)
Electrical115/1/60
Fan-coil fan motor115 W
Condenser fan motor75 W
Current draw (cooling)4.8 A
Electric heat option1,000 W / 3,400 BTU/h
Fan-coil dimensions (L x W x H)23.81 in x 25.04 in x 19.65 in
Fan-coil weight54 lbs
Condenser enclosure (L x W x H)34 in x 12 in x 26 in
Condenser weight76 lbs
Condensate drain connection0.5 in
Minimum ductwork size10 in round
Agency approvalETL listed, UL 1995 / CSA C22.2
Cabinet constructionAluminum chassis with UL-rated composite panels
PatentCondensing unit is patented (US Patent No. D791295)
Compatible Accessories
Remote Interface Controller and Thermostat - Wine Guardian Dealer

Remote Interface Controller and Thermostat

Wireless2Base controllerRemote Sensor - Wine Guardian Dealer

Remote Sensor

Temperature and humidity sensorSentinel Series Duct Collar - Wine Guardian Dealer

Sentinel Series Duct Collar

Supply or return duct connectionFlexible Ductwork (10 in) - Wine Guardian Dealer

Flexible Ductwork (10 in)

Insulated flex duct run

Accessory availability and pricing are confirmed on each live product page. An integrated or freestanding Wine Guardian humidifier can be added to reach 55% to 65% relative humidity.

Compare Across the Line

Other Ducted Split Units

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In the Box

What's Included

The SP50 ductable fan-coil (evaporator) unit
The matched Wine Guardian remote condensing unit
Wireless2Base remote interface controller
Manufacturer documentation and quick-start guide
Resources

Documents and Resources

Ducted Split Product BrochurePDFDucted Split Specifications SheetPDFDucted Split Pro Installation ManualPDFQuick Start Installation GuidePDFStandard WarrantyPDFPlatinum WarrantyPDFSP50 Dimensional Drawing (CAD PDF)PDFSP50 Dimensional Drawing (CAD DWG)DWGCondenser Dimensional Drawing (CAD PDF)PDFCondenser Dimensional Drawing (CAD DWG)DWG
Frequently Asked Questions

SP50 Ducted Split FAQs

How much cooling capacity does the SP50 provide?
The SP50 is rated at 6,300 BTU/h and is recommended for wine cellars of roughly 650 to 3000 cubic feet. Net capacity changes with ambient temperature; the full table is in the specifications above. Confirm final sizing with the Wine Guardian cooling calculator and a qualified contractor.
What is a ducted split system, and how is it different from a self-contained unit?
A ducted split separates the evaporator (fan-coil) and the condenser into two units installed in different locations and connected by refrigerant lines. A self-contained unit houses everything in one box. The split is the most flexible option when venting is restricted, space is tight, or duct runs are long.
Does the SP50 need a licensed contractor to install?
Yes. A ducted split involves refrigerant line connections between the two units, so it must be installed by a licensed HVAC contractor. This also keeps the manufacturer warranty valid.
Can the SP50 control humidity and serving temperature?
The system controls temperature precisely and displays humidity. Add an integrated or freestanding Wine Guardian humidifier to reach 55% to 65% relative humidity, and the optional serving-temperature control lets it cool as low as 45°F.
Is the SP50 covered by a warranty?
Yes. Wine Guardian provides a standard warranty of 2 years parts, 1 year labor (standard), with a Platinum option that extends to Platinum option: 2 years parts and labor plus a 3-year extension on the compressor, evaporator coil, and condenser coil. Warranty service is handled through the manufacturer.

Find the Right Ducted Split System

The SP50 is a Pro-series split configured to your project and quoted directly. Tell us your cellar size and conditions and we will help confirm the right configuration.

Browse All Ducted Split UnitsRequest a Quote
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