Cellar Cooling Calculator
Get a specific BTU recommendation and a cooling unit shortlist for your cellar. Two minutes, no email required.
How this calculator works
Volume in cubic feet (length × width × height) multiplied by the temperature differential between exhaust ambient and the 55°F target, multiplied by a heat-loss factor that depends on the insulation R-value. Glass walls roughly double the surface heat gain, so the result is adjusted accordingly. Standard interior doors add roughly 200 BTU of leakage. A 20% safety margin is added to cover variability in ambient swing and door cycles.
This is a sizing first pass, not a contractor-grade load calculation. For commercial installs, glass-wall cellars over 600 cubic feet, or any cellar where ambient regularly exceeds 85°F, call us before ordering and our specialists will run the numbers against your specific room.