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Wine Guardian D088WC Ducted Water Cooled Wine Cooling System

Wine Guardian  |  SKU: 99H0256-20
$9,021.00

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Cooling Unit Options

Options:

*All Wine Temperatures Bundle

For extended wine-cellar temperature ranges. Allows a Wine Guardian unit to control to an extended temperature range from 45°F to 64°F, perfect for single to multiple cabinet applications and small wine rooms in which serving-temperature cooling is preferred.

This bundle also contains an integral electric heater coil and controls to protect wine cellars from dangerously low temperatures. It is ideal for areas where ambient temperatures fall below 50°F.

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SENTINEL SERIES · Water-Cooled Ducted

D088WC Water-Cooled Ducted Unit for Wine Cellars

The Wine Guardian D088WC water-cooled ducted unit is a self-contained wine cellar cooling system rated 9,600 BTU/h at 230 V that rejects its heat into a building water loop instead of into the surrounding air.

That single difference is the whole decision. A water-cooled unit exists for the case where there is nowhere acceptable to send warm exhaust air: a sealed mechanical room, a finished basement with no route to outside, a space where the heat would land somewhere it is not wanted, or a build where the noise and airflow of a condenser fan cannot go. In exchange, the heat has to go somewhere else, and that somewhere is a water loop the building already has. Wine Guardian names geothermal, cooling tower and lake water as the applications these systems are built for, and states that water-cooled systems remove the need to exhaust heat but require a year-round water supply. Specifying the D088WC is therefore a plumbing and building-services decision before it is a cooling decision.

Wine Guardian publishes a safe condenser inlet water temperature range of 45°F to 85°F and warns that water entering above 85°F risks tripping the high-pressure switch. Its ducted specifications sheet gives the D088 column 1.20 GPM at a 20°F rise, a 0.08 PSI pressure drop and a 0.50 inch outside-diameter connection; the loop capacity has to be confirmed by the contractor who will make the connection. This is not a unit that simply plumbs in, and our list of the spec mistakes contractors most often make on wine cellar projects covers the details that decide whether that connection is made once or twice.

The D088WC is sized for wine cellars and storage rooms of roughly 850 to 4,500 cubic feet and holds them at 55°F to 58°F. Every unit ships with a coated evaporator coil, a Wireless2Base remote interface controller, an aluminum chassis with UL-rated composite panels and Wine Guardian fail-safe protection. As an authorized Wine Guardian dealer we list the D088WC with full manufacturer specifications so it can be compared and sized correctly; final sizing should be confirmed with the Wine Guardian cooling calculator and a licensed HVAC professional.

9,600 BTU/h
Capacity at 230 V
45–85 °F
Entering Water Range
850–4,500 ft³
Cellar Volume
125 lbs
Unit Weight
See It in Action

See the D088WC in Action

Where the Heat Actually Goes

See how a Wine Guardian water-cooled system carries cellar heat out through a water loop instead of blowing it into an adjacent room.

  • Heat rejected to water, so no warm-air exhaust has to be routed anywhere
  • Suits sealed mechanical rooms and spaces with no path to outside air
  • Requires a year-round water supply that the building already has

Questions about fit? Call our specialists at (800) 260-1712.

Fit Check

Is the D088WC Water-Cooled Ducted Unit Right for Your Cellar?

The D088WC is the right unit when a cellar of roughly 850 to 4,500 cubic feet has no acceptable place to reject heat into the air and the building already has a year-round water loop to reject it into instead. If that loop does not exist yet, the honest comparison is not against another cooling unit but against the cost of building the loop, and in most homes the air-cooled D088 is the simpler answer. Where the cellar itself can go often settles that question first, and our comparison of how each possible wine cellar location in a home compares weighs the options on exactly that basis.

✓ Ideal For

  • Sites with an existing geothermal loop, cooling tower or lake water source, the applications Wine Guardian names for its water-cooled systems
  • Wine cellars and storage rooms of roughly 850 to 4,500 cubic feet
  • Sealed mechanical rooms, interior spaces and finished basements with no route for warm exhaust air
  • Projects where a licensed contractor is already making refrigeration, electrical and plumbing connections
  • Installs that can route insulated ductwork to a unit located outside the cellar

✕ Consider Another Model If

  • There is no water loop on site, in which case the air-cooled D088 does the same cooling with no plumbing
  • Your only water source is a metered city supply, which Wine Guardian does not recommend for water-cooled systems
  • The available water is seasonal, shared with another load, or cannot be held between 45°F and 85°F all year
  • Your cellar is under about 850 cubic feet, where a smaller unit is a better match
  • Your cellar is larger than about 4,500 cubic feet, where the D200WC is the water-cooled step up
Key Features

D088WC Key Features

The D088WC pairs the standard Sentinel Series ducted platform with a water-cooled condenser section, so everything below the heat-rejection row is shared with the air-cooled D088.

Feature What it means for your cellar
Water-cooled condenser section Heat leaves through a water loop rather than a condenser air stream, so no room has to absorb the exhaust. The loop must already exist and must run all year.
Copper straight tube water connections Cooling water inlet and outlet are copper straight tube, so the connection is made by the plumbing or mechanical trade during installation, not by the owner afterwards.
Self-contained ducted design Evaporator, fans, compressor, condenser and controls sit in one cabinet outside the cellar, so the wine room itself stays quiet and clear.
Coated evaporator coil Protects the evaporator side against corrosion in the humid air a wine cellar is deliberately kept in.
Wireless2Base remote interface controller Monitors temperature and humidity continuously and corrects conditions before the wine is affected; the controller can be placed in a kitchen, den or elsewhere.
Precision control (±1°F / ±10% RH) Holds wine-storage conditions of 55°F to 58°F, with an optional humidifier for 55% to 65% relative humidity.
Aluminum chassis with UL-rated composite panels Resists dents and scratches through shipping and installation, and keeps the cabinet serviceable in a mechanical room.
Field-serviceable, multi-panel access Panels, duct collars and grille remove with a couple of screwdriver turns, so service happens on site rather than by returning the unit.
Optional bundles and humidification All Wine Temperatures, Extreme Climate Protection and Ultimate bundles add heating, low and high ambient protection, and serving-temperature control as the space requires.

What the Water Loop Must Supply

Wine Guardian publishes two hard water-side requirements for its water-cooled units and leaves the rest to the specifications sheet. The published requirements are a condenser inlet water temperature inside a safe operating range of 45°F to 85°F, and a year-round water supply. Wine Guardian also warns that water entering above 85°F risks tripping the high-pressure switch, does not recommend water-cooled systems on a city water supply, and specifies copper straight tube connections for the cooling water inlet and outlet. The Wine Guardian ducted specifications sheet gives the D088 column 1.20 GPM at a 20°F rise, a 0.08 PSI pressure drop and a 0.50 inch outside-diameter connection; have the installing contractor verify the loop can actually deliver them alongside whatever else it serves.

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

How Quiet Is It

How Quiet Is the D088WC?

Why a Water-Cooled Ducted Unit Keeps the Cellar Quiet

Wine Guardian does not publish a single decibel rating for its ducted units, because the dominant noise factor is placement: the D088WC installs outside the wine room and connects through insulated ductwork, so the compressor and fans are not in the space you occupy. Rejecting heat to water rather than air also removes the condenser air stream that a comparable air-cooled unit has to move and exhaust somewhere.

  • The unit sits in a utility room, closet or adjacent space, away from the cellar.
  • Internal components are mounted on rubber-in-shear isolators to reduce vibration and noise.
  • Flexible ductwork absorbs air noise, and sound drops further each time a duct run turns a corner.
  • There is no condenser exhaust airflow to find a home for, which is often the noise complaint on an air-cooled install.
Full Specifications

Wine Guardian D088WC Specifications

Wine Guardian publishes the D088 platform in two voltage columns, 208 V and 230 V, so every capacity and current figure below is tagged with the voltage it belongs to. The capacity ladder is published against condenser inlet temperature on the Wine Guardian ducted specifications sheet; the safe condenser inlet water temperature range for the water-cooled section is published separately as 45°F to 85°F.

ModelD088WC
SeriesSentinel Series
ConfigurationSelf-contained ducted, water-cooled condenser section
Heat rejectionTo a building water loop
Condenser inlet water temperature (safe operating range)45°F to 85°F
Water supplyYear-round supply required; city water not recommended by Wine Guardian
Water connectionsCopper straight tube, cooling water inlet and outlet
Water flow rate, pressure drop and line size1.20 GPM at a 20°F rise, 0.08 PSI pressure drop, 0.50 in O.D. connection (Water-cooled Condenser Section option, D088 column, Wine Guardian ducted specifications sheet)
Rated cooling capacity at 230 V9,600 BTU/h total, 6,850 BTU/h sensible, at 80°F condenser inlet
Rated cooling capacity at 208 V9,420 BTU/h total, 6,610 BTU/h sensible, at 80°F condenser inlet
Published measurement conditionNet cooling capacity at entering temperature and humidity conditions of 57°F and 55% RH at rated airflow
Net cooling at 60°F condenser inlet10,830 BTU/h at 230 V; 10,700 BTU/h at 208 V
Net cooling at 70°F condenser inlet10,250 BTU/h at 230 V; 9,900 BTU/h at 208 V
Net cooling at 80°F condenser inlet9,600 BTU/h at 230 V; 9,420 BTU/h at 208 V
Net cooling at 90°F condenser inlet8,760 BTU/h at 230 V; 8,600 BTU/h at 208 V
Recommended cellar volume850–4,500 ft³
Storage temperature range55°F to 58°F
Humidity (with optional humidifier)55% to 65%
Control accuracy±1°F / ±10% RH
RefrigerantR-134A
Electrical208-230/1/60
Line frequency60 Hz
Current draw9.8 A at 208 V; 8.8 A at 230 V
Minimum circuit ampacitySee the Wine Guardian ducted specifications sheet; have a licensed electrician size the circuit
Electric heat optionSee the Wine Guardian ducted specifications sheet; have a licensed electrician size the circuit
Evaporator fan motor175 W at 208 V; 195 W at 230 V
Evaporator airflow435 CFM at 208 V; 485 CFM at 230 V, free blow
Dimensions (L x W x H)41.5 in x 22.5 in x 19 in, as published by Wine Guardian on its D088WC product page
Weight125 lbs, as published by Wine Guardian on its D088WC product page
Condensate drain connection0.50 in
Minimum ductwork size10 in round, evaporator side, per the Wine Guardian ducted installation and operation manual
Agency approvalUL 1995 / CSA C22.2
Cabinet constructionAluminum chassis with UL-rated composite panels

Minimum circuit ampacity and the electric heat rating are printed on the Wine Guardian ducted specifications sheet as combined heat and no-heat values and are not reproduced here. Take both from that sheet and have a licensed electrician size the circuit, the disconnect and the overcurrent protection. The 125 lb weight and the 41.5 in x 22.5 in x 19 in dimensions above are the figures Wine Guardian publishes for the D088WC in the Additional Information table on its own product page; they describe the unit and its cabinet, not the crated shipping weight, so confirm the shipping weight with Wine Guardian before rigging is planned or freight is booked.

Compatible Accessories

Compatible D088WC Accessories

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. Water-loop piping, valves and any circulator are supplied and installed by the contractor making the connection.

Compare Across the Line

How the D088WC Water-Cooled Unit Compares to the Air-Cooled D088

The D088WC and the air-cooled D088 cool identically; they differ only in where the heat goes and what the building must already provide.

Decision factor D088WC (water-cooled) D088 (air-cooled) D200WC (water-cooled)
Where the heat goes Into a building water loop Into the surrounding air Into a building water loop
What the site must already have A year-round water supply between 45°F and 85°F A space that can absorb and ventilate the exhaust heat A year-round water supply between 45°F and 85°F
Trades needed to install Refrigeration, electrical and plumbing Refrigeration and electrical Refrigeration, electrical and plumbing
Rated capacity at 230 V, 80°F condenser inlet 9,600 BTU/h 9,600 BTU/h 15,680 BTU/h

Best for: choose the D088WC if the cellar has nowhere acceptable to reject heat into the air and a year-round water loop is already on site. Not ideal for: choose the air-cooled D088 if a ventilated space is available, because it delivers the same 9,600 BTU/h with no water connection and one fewer trade; choose the D200WC if the cellar is larger than the 088 class covers.

If you are still choosing a configuration, the full range of Wine Guardian water-cooled ducted cooling systems shows every capacity that rejects heat to a loop, and if you are working from room size instead, compare it against the other cooling units for cellars of 2,200 to 4,500 cubic feet.

In the Box

What's Included

The D088WC self-contained water-cooled ducted cooling unit
Wireless2Base remote interface controller
Integral controls and air-sensing technology
Copper straight tube cooling water inlet and outlet connections
Manufacturer documentation and quick-start guide
Frequently Asked Questions

D088WC Water-Cooled System Questions

What does the D088WC need from the building water loop?
The D088WC needs a year-round supply of water entering the condenser between 45°F and 85°F. Wine Guardian's ducted installation manual states that the safe operating range of the condenser inlet water temperature is 45°F to 85°F, and its water-cooled brochure states that water-cooled systems remove the need to exhaust heat but require a year-round water supply. The Wine Guardian ducted specifications sheet gives the D088 column 1.20 GPM at a 20°F rise, a 0.08 PSI pressure drop and a 0.50 inch outside-diameter connection; have the installing contractor confirm them against the loop you already have.
Can the D088WC run on city water?
Wine Guardian does not recommend it. Its ducted installation manual states that it does not recommend using a water-cooled system if you are using a city water supply. The water-cooled brochure names geothermal, cooling tower and lake water as the applications these systems are built for, so plan the D088WC around a recirculating or natural water source rather than a metered municipal line.
What happens if the water runs too warm or the supply is interrupted?
Warm or missing water stops the cooling before the cellar does. Wine Guardian warns that if the water temperature entering the unit is above 85°F you risk tripping the high-pressure switch, and the system is specified to require a year-round water supply, so a loop that is seasonal, shared with another load, or throttled will not hold the room. A licensed HVAC professional should confirm the loop can keep entering water within 45°F to 85°F in every season before the unit is specified.
Who is qualified to connect the D088WC to a water loop?
A licensed contractor. Wine Guardian's water-cooled units have copper straight tube connections for both the cooling water inlet and the outlet, so the connection is plumbing and building-services work carried out alongside the refrigeration and electrical installation, not a fitting the owner makes. Wine Guardian documentation and a licensed HVAC professional or qualified contractor should confirm the final installation design.
How much cooling does the D088WC provide, and at what voltage?
Wine Guardian rates the D088 platform at 9,600 BTU/h total capacity at 230 V and 9,420 BTU/h total at 208 V, both at an 80°F condenser inlet, and recommends it for wine cellars of roughly 850 to 4,500 cubic feet. The published condition for those figures is net cooling capacity at entering temperature and humidity conditions of 57°F and 55% RH at rated airflow. Final sizing should be confirmed with the Wine Guardian cooling calculator and a qualified contractor.
What electrical circuit does the D088WC need?
Wine Guardian publishes the D088 current draw as 9.8 A at 208 V and 8.8 A at 230 V on a single-phase 60 Hz supply. The minimum circuit ampacity and the electric heat rating are printed on the Wine Guardian ducted specifications sheet as combined heat and no-heat values, so they are not reproduced here; take both directly from that sheet and have a licensed electrician size the circuit and disconnect.
How is the D088WC different from the air-cooled D088?
The D088WC rejects its heat into a water loop instead of into the surrounding air. It shares the cabinet, the controls and the rated capacity of the air-cooled D088, so the difference is not cooling performance but where the heat goes and what the building has to provide. The air-cooled D088 needs a space that can absorb and ventilate the exhaust heat; the D088WC needs a year-round water loop that is already there.
Does the D088WC control humidity?
The D088WC controls temperature precisely and displays humidity. To actively raise humidity to 55% to 65% relative humidity, add an integrated or freestanding Wine Guardian humidifier, which connects to the system.
Is the D088WC covered by a warranty?
Yes. Wine Guardian provides a standard warranty of 25 months on parts and 13 months on labor. A Platinum option extends coverage to 25 months on parts and labor plus a 36-month parts-only extension on the compressor, evaporator coil and condenser coil, 61 months in total. Warranty service and product registration run through Wine Guardian.

Find the Right Water-Cooled Cooling Unit

Compare the full water-cooled range or talk to us about whether your water loop can carry the D088WC. This guidance is general and is meant to help narrow the selection; final sizing, installation design, water-loop capacity and electrical requirements should be confirmed with Wine Guardian documentation and a licensed HVAC professional or qualified contractor.

📞 Free Expert Consultation I Not sure what system you need? Call us at 1-800-260-1712 and talk to a Wine Cellar Expert!