Small Wine Cellar Cooling Units: Up to 1,200 Cubic Feet

Twelve units sit in this band, in three formats. The Through-the-Wall TTW01B and TTW02B cover the smaller and the larger half of the band respectively, each offered in Classic, Sentinel and Defender trim. The SS018 ductless split and the CS025 Ceiling Mount are both published by Wine Guardian at 100 to 1,200 cubic feet. Final sizing should be confirmed with Wine Guardian's official documentation and a licensed HVAC professional or qualified contractor.

At the edge of a band the published range stops being the whole answer, because the figures behind it assume a documented baseline: an 8-foot ceiling, no glass, insulated walls and a moderate temperature on the other side of the wall. A room at 1,200 cubic feet that carries a glass wall, a warm adjacent garage or an unusually high ceiling behaves like a larger room, and a unit picked on volume alone runs longer than it should. At the boundary, look at the top unit in this band and the entry unit in the 1,200 to 2,200 cubic foot group together, and have a licensed HVAC professional or qualified contractor confirm which one the room actually needs.

Two things cause it. Within one group, a single chassis can appear several times because Wine Guardian sells it in more than one trim or mounting kit: the CS025 is listed both as a Wine Wall unit and as a Ceiling Mount, and the TTW02B is listed in Classic, Sentinel and Defender trim. Across groups, a series spans bands because each capacity class in the series gets its own band. A unit is placed in a band by the top of its published cellar-volume range, never by where that range starts, so most units here also suit rooms far smaller than 1,200 cubic feet.

The door adds no volume, but it changes the answer. Cubic feet are measured on the finished internal space of the room, so a glass door or a glass wall contributes only the space it encloses. What it does change is how much heat enters, and Wine Guardian's own cubic-foot baseline assumes no glass at all. A cellar with a glass door or a full glass wall therefore has to have its glass area entered as glass rather than treated as wall, which is what Wine Guardian's cooling calculator asks for, and a licensed HVAC professional or qualified contractor should confirm the result before you order.

The room measurement is the same, but the load is not. A restaurant, bar or wine shop adds door openings through every service hour, lighting on the display, staff in the room and frequently a warm back-of-house space on the other side of the wall, none of which a home cellar carries. Commercial rooms are also expected to hold temperature continuously rather than recover overnight. A room that measures inside this band on volume alone can therefore need equipment from a larger group once the commercial load is counted, and that calculation belongs with a licensed HVAC professional or qualified contractor.

Wine Guardian separately lists the TTW01B as the replacement for the TTW009, which it rates at 50 to 600 cubic feet. Wine Guardian separately lists the TTW02B as the replacement for the TTW018, which it rates at 100 to 1,200 cubic feet. The TTW009 and TTW018 pages are kept on this site for specification and replacement lookup only, and neither is available to buy. The B series adds Bluetooth and NFC controls, a coated evaporator coil and updated fail-safe protections.

One can. The CAB018 is a self-contained cabinet unit with an integral air-cooled condenser, and Wine Guardian recommends it for 100 to 1,200 cubic feet of enclosed cabinet interior, which is not the same thing as 100 to 1,200 cubic feet of room. A sealed cabinet and a room of equal cubic feet are not the same cooling problem, so the CAB018 figure should never be read across to a walk-in cellar. The CAB018 is offered by quote request rather than online checkout.

That depends on the format, because the compressor is what you hear. The TTW02B Sentinel is rated at 56.7 dB at 6 feet and the TTW01B Classic at 51.9 dBA at 6 feet, both measured with the whole unit sitting in the wall of the room. The SS018 and the CS025 Ceiling Mount move the compressor out to a remote condensing unit, so the cellar keeps only a fan coil, although Wine Guardian publishes no decibel rating for its ductless split systems and any figure quoted for one did not come from the manufacturer.