When this method is used, a fixed asset is depreciated by the same amount each year. When using the straight-line method, you must specify one of the following options in the FA depreciation book: 1  The depreciation period (years or months) or a depreciation ending date.
Assuming the house has wood siding and there's an electrical line already in the bathroom, an electrician will charge $268 to install an exhaust fan, which includes the labor and material. You can buy the fan for $90 and install it, saving 66 percent. DIY Hassle Alert.
1 Many kitchen exhaust fans are part of a range hood, which can cost $30-$4,500, depending on size, type and cfm; installation adds another $250-$1,500, depending on whether the project is simply connecting and hanging the range hood, or if new metal ductwork must be installed to exhaust the air outdoors. For example, the Broan Model 671 Ceiling and Wall Mount Bathroom Fan with 70 cfm and 6.0 sones costs $25-$53. 2  Expect to pay $30-$150 for a bathroom fan with 50-130 cfm plus a simple light fixture or an infrared heater (generally not both), and a few models in this range may qualify for the Energy Star efficiency rating.