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Wine Guardian SP88 Pro Ducted Split System Wine Cooling Unit

Wine Guardian  |  SKU: 99H0206-20 + 99H0353-11

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Fan-Coil Options
Condenser Options

Options:

*Heater

Protects wine cellars from dangerously low temperatures. Adjustable activation from 2 - 6°F 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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PRO SERIES · Ducted Split System

Wine Guardian SP88 Pro Ducted Split System for 850 to 4,500 Cubic Foot Cellars

The Wine Guardian SP88 Pro ducted split is a two-piece wine cellar cooling system, a ductable fan coil plus a separate remote condensing unit, rated by Wine Guardian at 9,840 BTU/h total at 80°F condenser inlet air for cellars of 850 to 4,500 cubic feet.

The SP88 is the model in the Pro ducted split line where the electrical requirement changes. On the SP25 and the SP50 the fan coil runs on a 115 volt circuit and only the condensing unit needs 208-230 volts. On the SP88 both sections need 208-230 volts, 1 phase, 60 Hz. That is the fact most likely to send a project back to the drawing board, so it belongs at the top of the page rather than in a footnote, and it should be settled with a licensed electrician before anything is ordered.

What the step up buys is reach as much as capacity: Wine Guardian rates the SP88 for a total refrigerant line length of up to 120 feet, against 90 feet on the SP50 and 50 feet on the SP25. Pro is a tier inside Wine Guardian's Sentinel Series rather than a separate line, and on the SP88 it means 24 volt controls an external thermostat or a building management system can drive, service ports, pressure switches and a refrigerant sight glass, and a composite multi-panel cabinet with integral captive quarter-turn fasteners. Wine Guardian manufactures the system and handles warranty and service; this store is an authorized Wine Guardian dealer, and the SP88 is configured and quoted rather than sold from a fixed online price. Final sizing, ductwork and electrical design should be confirmed by a licensed HVAC professional.

9,840 BTU/h
Total capacity at 80°F inlet air
850–4500 ft³
Cellar volume, Wine Guardian
208-230 V
Both sections, fan coil included
120 ft
Maximum line set length
See It in Action

See the SP88 Pro Ducted Split in Action

Watch How a Split System Works

A Wine Guardian split system keeps the compressor out of the wine room: the condensing unit rejects heat somewhere else while the fan coil ducts cooled air into the cellar.

  • Fan coil and condensing unit mount in separate locations
  • Condenser heat and compressor noise leave the wine room entirely
  • Total refrigerant line length up to 120 feet on the SP88
  • 24 volt control, so an external thermostat can drive the system

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

Fit Check

Is the SP88 Right for Your Cellar and Your Electrical Supply?

The SP88 is the right Pro ducted split when the cellar sits inside Wine Guardian's 850 to 4,500 cubic foot range, the condensing unit lands within 120 feet of total line length, and the site can bring 208-230 volts to the fan coil as well as to the condensing unit. That last condition is the one that disqualifies projects: on the SP25 and SP50 the fan coil runs on 115 volts, and a site wired on that assumption has to be revisited before an SP88 can be specified. Which parts of a cellar installation an owner can take on and which need a licensed trade covers where that line falls on a two-section system.

✓ Ideal For

  • Cellars of 850 to 4,500 cubic feet, per Wine Guardian's own recommended volume
  • Sites that can supply 208-230 volts, 1 phase, 60 Hz to both the fan coil and the condensing unit
  • Condenser locations that need real distance, up to 120 feet of total line length
  • Buildings with no practical way to exhaust condenser heat internally
  • Projects driven by an external thermostat or a building management system
  • Cold condenser locations, with Extreme Climate Protection added

✕ Consider Another Model If

  • Only 115 volt service can reach the fan coil location, which rules the SP88 out and points to the SP50
  • The cellar is under 850 cubic feet, where the smaller Pro ducted splits are the rated answer
  • The cellar is larger than 4,500 cubic feet, which is SP200 territory
  • A self-contained ducted unit fits and can vent, which is a simpler single-box install
  • Humidity control is required and no humidifier is being added

If cellar volume rather than configuration is the open question, start from the band: this store groups the SP88 with the other cooling units for cellars of 2,200 to 4,500 cubic feet, which is where most SP88 projects land.

Key Features

SP88 Pro Ducted Split Key Features

The SP88 Pro ducted split earns its Pro designation through controls, protection devices and serviceability rather than through extra capacity alone: 9,840 BTU/h at 80°F condenser inlet air arrives with 24 volt integration, pressure protection, a service sight glass and a cold-climate option.

Feature What it means for your cellar
Two-piece ducted split design The ductable fan coil and the remote condensing unit mount in different places and connect through refrigerant lines, so the system fits sites where a single-box unit has nowhere to exhaust its heat.
208-230 volt fan coil The SP88 fan coil is rated 208-230 volts, 1 phase, 60 Hz rather than the 115 volts used on the SP25 and SP50 fan coils, so both sections of the system need the higher supply. Plan the circuits with a licensed electrician.
120 foot maximum line length Wine Guardian rates the SP88 for a total refrigerant line length of up to 120 feet, so the condensing unit can go onto a roof, around the building or at the far end of a basement.
Matched Wine Guardian condensing unit The condensing unit is engineered by Wine Guardian for this fan coil rather than paired in the field, which is what the published capacity ladder is measured on.
24 volt control, thermostat by others Pro-series 24 volt electronics let the system be driven by an external thermostat or a building management system instead of a proprietary controller only.
Pro protection package Wine Guardian states that Pro units come installed with service ports, appropriate pressure switches and a refrigerant sight glass to allow for faster and more efficient maintenance.
Extreme Climate Protection option Wine Guardian describes this as unit protection in extreme climate conditions, on the condenser section only, required for continuous operation in climates that fall below 20°F, and enabling the system to operate in temperatures as low as minus 20°F.
Electric heat option An electric heater option protects the cellar from dangerously low temperatures. Wine Guardian's own SP88 product page states that the heater's activation is adjustable from 2°F to 6°F below your setpoint. Wine Guardian states the electric heating option is factory installed and includes primary and secondary over-temperature protection devices per UL and NEC.
Optional humidification An optional Wine Guardian humidifier brings the cellar to 55% to 65% relative humidity. The SP88 does not control humidity without it.
Composite multi-panel cabinet Wine Guardian's composite multi-panel design with integral captive quarter-turn fasteners allows for ease of access and serviceability, so routine work happens on site.
R-134a refrigerant and digital controls Wine Guardian states that its ducted split systems use digital electronic controls and R-134a refrigerant.

Built-in protection: Wine Guardian's Pro series uses pressure switches and a refrigerant sight glass so an undercharged, overcharged or leaking system is caught in service rather than left cycling.

How Quiet Is It

How Quiet Is the SP88 With the Compressor Outside the Cellar?

Wine Guardian publishes no decibel rating for its Pro ducted split systems, so no dB figure for the SP88 appears anywhere on this page. What the configuration does guarantee is that the compressor is not in the wine room: on the SP88 the compressor sits in the remote condensing unit, and only the fan coil is on the cellar side of the system. How a split system and a through-the-wall unit differ in where they send condenser heat explains why that separation is specified.

Where the Noise Actually Goes

  • The condensing unit, which carries the compressor and a 150 watt condenser fan moving 420 CFM, installs away from the cellar and can be sited outdoors.
  • The fan coil mounts outside the wine room and connects through insulated ductwork, so the cellar hears duct air rather than machinery.
  • Flexible ductwork absorbs air noise, and each turn in the duct run takes a little more of it out.
  • Wine Guardian rates the SP88 fan coil at 482 CFM free blow and 457 CFM at 0.20 in w.c., so the duct system can be designed rather than guessed at.
Full Specifications

SP88 Specifications and Published Performance Data

Every SP88 figure below comes from Wine Guardian's own Pro Ducted Split specifications sheet, whose header reads SP25 SP50 SP88 SP200, together with the Pro Ducted Split manual, the Pro Ducted Split brochure and Wine Guardian's SP88 product page. Minimum circuit ampacity, maximum breaker size and electric heat wattage are deliberately not published here; take those from the Wine Guardian specifications sheet and have a licensed electrician confirm both circuits.

ModelSP88
SeriesWine Guardian Pro, a tier within the Sentinel Series
System typeTwo-piece ducted split: ductable fan coil plus remote condensing unit
Line frequency60 Hz
Rated cooling capacity9,840 BTU/h total at 80°F condenser inlet air
Sensible capacity at the same condition7,688 BTU/h
Recommended cellar volume850–4500 ft³
Storage temperature range52°F to 70°F
Humidity55% to 65% relative humidity with the optional Wine Guardian humidifier
Temperature and humidity control accuracyNot published. Wine Guardian's Pro Ducted Split specifications sheet gives no usable per-model accuracy figure for the SP88, and the controls are specified as 24 volt control with the thermostat by others, so accuracy depends on the controller supplied
RefrigerantR-134a
Control type24 volt control, thermostat by others
Fan coil electrical208-230 volts, 1 phase, 60 Hz. This is the model where the fan coil crosses voltage: the SP25 and SP50 fan coils are 115 volts
Fan coil current draw, cooling mode0.8 A
Fan coil fan motor220 rated watts
Fan coil airflow, free blow482 CFM
Fan coil airflow at pressure loss457 CFM at 0.20 in w.c.
Condensing unit electrical208-230 volts, 1 phase, 60 Hz
Condensing unit nominal compressor current11.3 A
Condensing unit fan motor150 W
Condensing unit airflow, free blow420 CFM
Minimum circuit ampacity, maximum breaker size and electric heat wattageNot published on this page. Take these from the Wine Guardian Pro Ducted Split specifications sheet and have a licensed electrician confirm both circuits
Fan coil dimensions (L x W x H)23.8 in x 25 in x 19.7 in
Fan coil weight58 lbs
Condensing unit dimensions (L x W x H)34 in x 12.3 in x 26.07 in, as printed on Wine Guardian's own SP88 product page. The Pro Ducted Split specifications sheet labels the same enclosure the other way round, at 12.3 in length by 34.0 in width
Condensing unit weight96 lbs
Condensate drain connection0.5 in
Minimum ductwork size10 in for a single duct run, 8 in for a double duct run
Maximum refrigerant line set length120 ft
Condensing unit ambient operating range20°F to 115°F
Low ambient optionExtreme Climate Protection, which Wine Guardian states is required for continuous operation in climates that fall below 20°F and enables the system to operate in temperatures as low as minus 20°F. Wine Guardian scopes it to the condenser section only
Agency approvalETLc. Wine Guardian's manual states the entire system is approved by ETL according to UL 1995 and CSA safety standards
PatentWine Guardian states on its SP88 product page that the condensing unit is patented: US Patent No. D791295, EU Patent No. 003189349-0001, UK Patent No. 9003189349000
Warranty25 months parts and 13 months labor. Platinum: 25 months parts and labor plus a 36 month parts-only extension on the compressor, evaporator coil and condenser coil

Published Capacity by Condenser Inlet Air Temperature

Net cooling capacity for the SP88 as printed by Wine Guardian on the Pro Ducted Split specifications sheet, under the heading "Performance (57°/55%RH)". The rows are reproduced in the manufacturer's printed order and have not been re-sorted; capacity on this line does not fall in a straight line as the condenser inlet air gets hotter. Wine Guardian footnotes the sheet: all btuh capacity and airflow (CFM) values shown are at tested 230v applied on 208/230v rated units, and where the field application allows 208v applied to the dual-rated units you can generally expect 2.5% to 3.0% decreases in the values shown.

Condenser inlet air temperature Net cooling capacity, total / sensible (BTU/h)
@10°F 10,763 / 8,610
@40°F 10,865 / 8,815
@60°F 10,455 / 8,405
@80°F 9,840 / 7,688
@100°F 9,225 / 7,073
@115°F 8,713 / 6,663

Wine Guardian states on its ducted split category page that cooling capacity is rated at 80°F ambient, which is the row the 9,840 BTU/h headline comes from. Many variables affect proper unit sizing; confirm the final selection with a licensed HVAC professional.

Compatible Accessories

Compatible Accessories

Accessory availability and pricing are confirmed on each live product page. An integrated or freestanding Wine Guardian humidifier is the accessory that takes the cellar to 55% to 65% relative humidity; the SP88 does not control humidity without one.

Compare Across the Line

How the SP88 Compares With the SP50 and SP200

Within the Pro line the SP88 is the third of four wine cellar ducted split systems, and the choice between them turns on three things: cellar volume, how far the condensing unit has to sit from the fan coil, and what voltage the fan coil circuit can supply. The wider set sits in the Wine Guardian ducted split wine cellar cooling systems collection.

Decision factor SP50 Pro SP88 Pro SP200 Pro
Recommended cellar volume, Wine Guardian 650 to 3,000 cu ft 850 to 4,500 cu ft Largest in the Pro ducted split line
Total capacity at 80°F condenser inlet air 6,458 BTU/h 9,840 BTU/h 15,785 BTU/h
Fan coil electrical supply 115 V, 1 phase, 60 Hz 208-230 V, 1 phase, 60 Hz 208-230 V, 1 phase, 60 Hz
Maximum total refrigerant line length 90 ft 120 ft 150 ft

Best for / not ideal for: choose the SP88 if the cellar runs from 850 to 4,500 cubic feet, the condensing unit needs up to 120 feet of line length, and the site can bring 208-230 volts to the fan coil as well as to the condensing unit. It is not ideal for a site that can only reach the fan coil with 115 volt service, where the SP50 is the model rated for the job, nor for cellars past 4,500 cubic feet, where the SP200 begins. All three condensing units require 208-230 volts. Confirm the final selection with a licensed HVAC professional.

Frequently Asked Questions

SP88 Ducted Split Questions

Does the SP88 need 208-230 volt power to the fan coil as well as the condensing unit?
Yes, and this is the single biggest difference between the SP88 and the two smaller Pro ducted splits. Wine Guardian's Pro Ducted Split specifications sheet gives the SP88 fan coil as 208-230 volts, 1 phase, 60 Hz, where the SP25 and SP50 fan coils are 115 volts; the condensing unit is 208-230 volts on all three. Confirm both circuits with a licensed electrician before the cellar is framed.
Who is qualified to install the SP88?
A licensed HVAC contractor. The SP88 is a two-piece system whose fan coil and condensing unit are joined by refrigerant lines that have to be routed, connected and charged on site, and Wine Guardian writes its Pro Ducted Split Installation, Operation and Maintenance Manual for a qualified contractor. Using one also keeps the manufacturer warranty intact.
How far from the wine cellar can the SP88 condensing unit sit?
Wine Guardian's Pro Ducted Split manual gives the SP88 a maximum total line length of 120 feet, against 90 feet on the SP50 and 50 feet on the SP25. That reach is often the reason a project steps up to the SP88 rather than capacity alone. Confirm the routing with a licensed HVAC professional.
Does the SP88 offer a serving temperature option down to 45°F?
No. Wine Guardian's Pro Ducted Split brochure describes the Pro ducted systems as ideal for low-temperature air conditioning at 52°F to 70°F, and publishes no serving-temperature package for the Pro line. A 45°F serving-temperature option belongs to other Wine Guardian products, not to the SP88.
Will the SP88 condensing unit keep running outdoors through a cold winter?
Wine Guardian's Pro Ducted Split manual states the condensing unit is designed to operate in ambient temperatures ranging from 20°F to 115°F. For colder sites Wine Guardian offers Extreme Climate Protection, which it describes on its SP88 page as unit protection in extreme climate conditions on the condenser section only, required for continuous operation in climates that fall below 20°F, and enabling the system to operate in temperatures as low as minus 20°F.
What temperature and humidity control accuracy does Wine Guardian publish for the SP88?
None that can be used. Wine Guardian's Pro Ducted Split specifications sheet gives no usable per-model temperature or humidity accuracy figure for the SP88, and its controls block specifies 24 volt control with the thermostat by others, so accuracy depends on the controller supplied. No accuracy figure is published on this page for that reason.
Does the SP88 control humidity on its own?
Not on its own. Wine Guardian's Pro Ducted Split brochure states that an optional humidifier can be installed with the ability to achieve 55 to 65 percent relative humidity. Without that humidifier the SP88 controls temperature only.
How much cooling does the SP88 deliver and what cellar size does Wine Guardian recommend?
Wine Guardian rates the SP88 at 9,840 BTU/h total at 80°F condenser inlet air and gives a recommended volume of 850 to 4,500 cubic feet on its SP88 product page. Net capacity moves with condenser inlet air temperature and the full published ladder is in the specifications above. Confirm final sizing with a licensed HVAC professional.

Get a Quote for the SP88 Pro Ducted Split

The SP88 Pro is configured before it ships and quoted directly. Send the cellar dimensions, the intended condenser location, the winter low at that location and the voltage available at the fan coil, and the right configuration can be confirmed before anything is ordered.

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