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Wine Guardian SP50 Pro Ducted Split Wine Cooling System
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The Wine Guardian SP50 Pro ducted split system is a two-piece wine cellar cooling system, a ductable fan coil plus a separate remote condensing unit, rated by Wine Guardian at 6,458 BTU/h total at 80°F condenser inlet air for cellars of 650 to 3,000 cubic feet.
The SP50 sits one step up from the smallest Pro ducted split, and the step buys reach as well as capacity: Wine Guardian rates the SP50 for a refrigerant line set of up to 90 feet, against 50 feet on the model below it. That is the difference between a condensing unit that has to live near the wine room and one that can go onto a roof, around a corner of the building, or at the far end of a basement where its heat and its noise are nobody's problem.
Pro is a tier inside Wine Guardian's Sentinel Series rather than a separate line. On the SP50 it means 24 volt controls that an external thermostat or a building management system can drive, pressure switches and a refrigerant sight glass for service, a composite multi-panel cabinet with captive quarter-turn fasteners, and an optional Extreme Climate Protection Bundle for cold condenser locations. What the Pro tier carries that the standard Sentinel units do not is compared feature by feature. Wine Guardian manufactures the system and handles warranty and service; this store is an authorized Wine Guardian dealer, and the SP50 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.
A Wine Guardian split system keeps the compressor out of the wine room: the condensing unit rejects heat elsewhere while the fan coil ducts cooled air into the cellar.
Questions about fit? Call our specialists at (800) 260-1712.
The Wine Guardian Pro SP50 is the right model when the cellar falls inside Wine Guardian's 650 to 3,000 cubic foot recommendation and the condensing unit can be placed within 90 feet of refrigerant line set from the fan coil. Outside either of those two limits, a different model in the Pro ducted split line is the correct answer.
If cellar volume rather than configuration is the open question, start from the band instead: this store groups the SP50 with the other cooling units for cellars of 2,200 to 4,500 cubic feet, which is the band the top of the SP50's 650 to 3,000 cubic foot range falls in, alongside the ducted and water-cooled models that compete for the same projects.
The SP50 earns its Pro designation through controls, protection devices and serviceability rather than through extra capacity alone: the 6,458 BTU/h at 80°F condenser inlet air arrives with 24 volt integration, pressure protection, a service sight glass and a 90 foot line set allowance.
| 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. |
| 90 foot refrigerant line set allowance | Wine Guardian's Pro Ducted Split manual rates the SP50 for a line set of up to 90 feet, which is what lets the condensing unit go to a roof, a yard or the far side of a basement rather than the nearest available wall. |
| 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. |
| Pressure switches and refrigerant sight glass | Wine Guardian's Pro ducted split systems carry service ports, pressure switches and a refrigerant sight glass, so a contractor can read charge condition during commissioning and service. |
| Extreme Climate Protection Bundle option | Wine Guardian describes this bundle as covering the condenser section only, and states that it protects the system from 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 SP50 product page states that the heater's activation is adjustable from 2°F to 6°F below your setpoint; the heater wattage for this model is read from the Wine Guardian Pro Ducted Split specifications sheet rather than quoted here. |
| Optional humidification | An optional Wine Guardian humidifier brings the cellar to 55% to 65% relative humidity. The SP50 does not control humidity without it. |
| Composite multi-panel cabinet | Wine Guardian builds the Pro cabinet as a composite multi-panel design with integral captive quarter-turn fasteners, so panels come off for service on site. |
| R-134a refrigerant and digital controls | Wine Guardian's Pro ducted split systems use digital electronic controls and R-134a refrigerant. |
Built-in protection: Wine Guardian's Pro series uses pressure switches to stop the system cycling on and off when it is undercharged, overcharged or experiencing a leak.
Wine Guardian publishes no decibel rating for its Pro ducted split systems, so no dB figure for the SP50 appears anywhere on this page. What the configuration does guarantee is that the compressor is not in the wine room: on the SP50 the compressor sits in the remote condensing unit, and only the 115 watt fan coil is on the cellar side of the system. Where a split system and a through-the-wall unit each send condenser heat is the trade-off behind that arrangement.
Every SP50 figure below comes from Wine Guardian's own Pro Ducted Split specifications sheet, the Pro Ducted Split installation and operation manual, the Pro Ducted Split brochure and the Wine Guardian SP50 product page. Minimum circuit ampacity, maximum breaker size and electric heat wattage are deliberately not published here; take those from the Wine Guardian Pro Ducted Split specifications sheet and have a licensed electrician confirm the circuit.
Net cooling capacity for the SP50 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: the SP50 peaks at 60°F, and its 40°F and 80°F figures are identical. 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 | 5,535 / 4,203 |
| @40°F | 6,458 / 5,023 |
| @60°F | 6,765 / 5,330 |
| @80°F | 6,458 / 5,023 |
| @100°F | 5,740 / 4,510 |
| @115°F | 5,125 / 3,793 |
Wine Guardian states on its ducted split category page that cooling capacity is rated at 80°F ambient, which is the row the 6,458 BTU/h headline comes from. Many variables affect proper unit sizing; confirm the final selection with a licensed HVAC professional.
Accessory availability and pricing are confirmed on each live product page. The SP50 fan coil takes a 10 inch single duct run, which is why the 10 inch flexible ductwork is the matching size here. An integrated or freestanding Wine Guardian humidifier is the accessory that takes the cellar to 55% to 65% relative humidity; the SP50 does not control humidity without one.
Within the Pro tier the SP50 is the second of four ducted split models, 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 SP50 is the largest Pro ducted split that still runs its fan coil on ordinary 115 volt power. The wider set sits in the full range of Wine Guardian ducted split wine cellar cooling systems.
| Decision factor | SP25 Pro | SP50 Pro | SP88 Pro |
|---|---|---|---|
| Recommended cellar volume, Wine Guardian | 250 to 2,000 cu ft | 650 to 3,000 cu ft | 850 to 4,500 cu ft |
| Total capacity at 80°F condenser inlet air | 3,485 BTU/h | 6,458 BTU/h | 9,840 BTU/h |
| Fan coil electrical supply | 115 V, 1 phase, 60 Hz | 115 V, 1 phase, 60 Hz | 208-230 V, 1 phase, 60 Hz |
| Maximum refrigerant line set length | 50 ft | 90 ft | 120 ft |
Best for / not ideal for: choose the SP50 if the cellar runs from about 650 to 3,000 cubic feet, the condensing unit lands between 50 and 90 feet from the fan coil, and the fan coil circuit is a standard 115 volt supply. It is not ideal for cellars past 3,000 cubic feet or for condenser locations further than 90 feet away; step down to the SP25 when the cellar is 2,000 cubic feet or under and 50 feet of line set is enough, and step up to the SP88 only when the site can supply 208-230 volts to the fan coil as well as to the condensing unit. All three condensing units require 208-230 volts. Confirm the final selection with a licensed HVAC professional.
The SP50 Pro is configured before it ships and quoted directly. Send the cellar dimensions, the intended condenser location, the line set distance to it and the winter low at that location, and the right configuration can be confirmed before anything is ordered.
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The Wine Guardian SP50 Pro ducted split system is a two-piece wine cellar cooling system, a ductable fan coil plus a separate remote condensing unit, rated by Wine Guardian at 6,458 BTU/h total at 80°F condenser inlet air for cellars of 650 to 3,000 cubic feet.
The SP50 sits one step up from the smallest Pro ducted split, and the step buys reach as well as capacity: Wine Guardian rates the SP50 for a refrigerant line set of up to 90 feet, against 50 feet on the model below it. That is the difference between a condensing unit that has to live near the wine room and one that can go onto a roof, around a corner of the building, or at the far end of a basement where its heat and its noise are nobody's problem.
Pro is a tier inside Wine Guardian's Sentinel Series rather than a separate line. On the SP50 it means 24 volt controls that an external thermostat or a building management system can drive, pressure switches and a refrigerant sight glass for service, a composite multi-panel cabinet with captive quarter-turn fasteners, and an optional Extreme Climate Protection Bundle for cold condenser locations. What the Pro tier carries that the standard Sentinel units do not is compared feature by feature. Wine Guardian manufactures the system and handles warranty and service; this store is an authorized Wine Guardian dealer, and the SP50 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.
A Wine Guardian split system keeps the compressor out of the wine room: the condensing unit rejects heat elsewhere while the fan coil ducts cooled air into the cellar.
Questions about fit? Call our specialists at (800) 260-1712.
The Wine Guardian Pro SP50 is the right model when the cellar falls inside Wine Guardian's 650 to 3,000 cubic foot recommendation and the condensing unit can be placed within 90 feet of refrigerant line set from the fan coil. Outside either of those two limits, a different model in the Pro ducted split line is the correct answer.
If cellar volume rather than configuration is the open question, start from the band instead: this store groups the SP50 with the other cooling units for cellars of 2,200 to 4,500 cubic feet, which is the band the top of the SP50's 650 to 3,000 cubic foot range falls in, alongside the ducted and water-cooled models that compete for the same projects.
The SP50 earns its Pro designation through controls, protection devices and serviceability rather than through extra capacity alone: the 6,458 BTU/h at 80°F condenser inlet air arrives with 24 volt integration, pressure protection, a service sight glass and a 90 foot line set allowance.
| 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. |
| 90 foot refrigerant line set allowance | Wine Guardian's Pro Ducted Split manual rates the SP50 for a line set of up to 90 feet, which is what lets the condensing unit go to a roof, a yard or the far side of a basement rather than the nearest available wall. |
| 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. |
| Pressure switches and refrigerant sight glass | Wine Guardian's Pro ducted split systems carry service ports, pressure switches and a refrigerant sight glass, so a contractor can read charge condition during commissioning and service. |
| Extreme Climate Protection Bundle option | Wine Guardian describes this bundle as covering the condenser section only, and states that it protects the system from 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 SP50 product page states that the heater's activation is adjustable from 2°F to 6°F below your setpoint; the heater wattage for this model is read from the Wine Guardian Pro Ducted Split specifications sheet rather than quoted here. |
| Optional humidification | An optional Wine Guardian humidifier brings the cellar to 55% to 65% relative humidity. The SP50 does not control humidity without it. |
| Composite multi-panel cabinet | Wine Guardian builds the Pro cabinet as a composite multi-panel design with integral captive quarter-turn fasteners, so panels come off for service on site. |
| R-134a refrigerant and digital controls | Wine Guardian's Pro ducted split systems use digital electronic controls and R-134a refrigerant. |
Built-in protection: Wine Guardian's Pro series uses pressure switches to stop the system cycling on and off when it is undercharged, overcharged or experiencing a leak.
Wine Guardian publishes no decibel rating for its Pro ducted split systems, so no dB figure for the SP50 appears anywhere on this page. What the configuration does guarantee is that the compressor is not in the wine room: on the SP50 the compressor sits in the remote condensing unit, and only the 115 watt fan coil is on the cellar side of the system. Where a split system and a through-the-wall unit each send condenser heat is the trade-off behind that arrangement.
Every SP50 figure below comes from Wine Guardian's own Pro Ducted Split specifications sheet, the Pro Ducted Split installation and operation manual, the Pro Ducted Split brochure and the Wine Guardian SP50 product page. Minimum circuit ampacity, maximum breaker size and electric heat wattage are deliberately not published here; take those from the Wine Guardian Pro Ducted Split specifications sheet and have a licensed electrician confirm the circuit.
Net cooling capacity for the SP50 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: the SP50 peaks at 60°F, and its 40°F and 80°F figures are identical. 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 | 5,535 / 4,203 |
| @40°F | 6,458 / 5,023 |
| @60°F | 6,765 / 5,330 |
| @80°F | 6,458 / 5,023 |
| @100°F | 5,740 / 4,510 |
| @115°F | 5,125 / 3,793 |
Wine Guardian states on its ducted split category page that cooling capacity is rated at 80°F ambient, which is the row the 6,458 BTU/h headline comes from. Many variables affect proper unit sizing; confirm the final selection with a licensed HVAC professional.
Accessory availability and pricing are confirmed on each live product page. The SP50 fan coil takes a 10 inch single duct run, which is why the 10 inch flexible ductwork is the matching size here. An integrated or freestanding Wine Guardian humidifier is the accessory that takes the cellar to 55% to 65% relative humidity; the SP50 does not control humidity without one.
Within the Pro tier the SP50 is the second of four ducted split models, 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 SP50 is the largest Pro ducted split that still runs its fan coil on ordinary 115 volt power. The wider set sits in the full range of Wine Guardian ducted split wine cellar cooling systems.
| Decision factor | SP25 Pro | SP50 Pro | SP88 Pro |
|---|---|---|---|
| Recommended cellar volume, Wine Guardian | 250 to 2,000 cu ft | 650 to 3,000 cu ft | 850 to 4,500 cu ft |
| Total capacity at 80°F condenser inlet air | 3,485 BTU/h | 6,458 BTU/h | 9,840 BTU/h |
| Fan coil electrical supply | 115 V, 1 phase, 60 Hz | 115 V, 1 phase, 60 Hz | 208-230 V, 1 phase, 60 Hz |
| Maximum refrigerant line set length | 50 ft | 90 ft | 120 ft |
Best for / not ideal for: choose the SP50 if the cellar runs from about 650 to 3,000 cubic feet, the condensing unit lands between 50 and 90 feet from the fan coil, and the fan coil circuit is a standard 115 volt supply. It is not ideal for cellars past 3,000 cubic feet or for condenser locations further than 90 feet away; step down to the SP25 when the cellar is 2,000 cubic feet or under and 50 feet of line set is enough, and step up to the SP88 only when the site can supply 208-230 volts to the fan coil as well as to the condensing unit. All three condensing units require 208-230 volts. Confirm the final selection with a licensed HVAC professional.
The SP50 Pro is configured before it ships and quoted directly. Send the cellar dimensions, the intended condenser location, the line set distance to it and the winter low at that location, and the right configuration can be confirmed before anything is ordered.
Fan-Coil Options
Condenser Options
