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Front Duct Heat Loss 10" BTUH Adjustment for 55°1

Total Linear Feet of Ducting (10" Diameter / R6 Insulation3)

Ambient2 Temperature

20'

40'

60'

80'

100'

60°F

87 175 262 349 436

65°F

131 262 393 524 654

70°F

175 349 524 698 873

75°F

218 436 654 873 1091

80°F

262 524 785 1047 1309

85°F

305 611 916 1222 1527

90°F

349 698 1047 1396 1745

95°F

393 785 1178 1571 1963

If you will be ducting the cold air supply and return air to and from a wine cellar, the "heat loss" through the ducting must be considered when sizing the cooling unit. This table calculates the heat loss given: 1) The ambient temperature where the ducting is located, 2) Total length of the ducting, assuming R6 insulation and wine cellar temperature at 55°F. When calculating the thermal load of your wine cellar in a front-ducted application, always consider the BTUH from the table above, and add it to the box load from our other tables.

(1) The table calculates the additional BTUH to be added to box load for the wine cellar, assuming R6 insulation on the ducting and 55°F temperature inside the cellar.

(2) Select the BTUH based on the ambient temperature in the area through which the ducting will be located.

(3) Select the BTUH based on the TOTAL linear feet of ducting (ie add the linear feet for both the supply and return air to/from the wine cellar. It is not necessary to add the linear feet, if any, from ducting the rear (ie hot air supply and return) of the cooling unit.