Noun. 1. specific heat-the heat required to raise the temperature of one gram of a substance one degree centigrade. heat, heat energy-a form of energy that is transferred by a difference in temperature. 1  Facebook.
You begin to depreciate your property when you place it in service for use in your trade or business or for the production of income. You stop depreciating property either when you have fully recovered your cost or other basis or when you retire it from service, whichever happens first.
Instead, the improvements were considered non-residential real property subject to straight-line depreciation over a 39-year recovery period. Notably absent from the ruling is the representation or discussion of how much of the HVAC system was located inside the stand-alone commercial building, as well as whether the interior versus exterior portions of the system should be depreciated differently.