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 If you choose to install the ceiling fan yourself, the materials, excluding the fan, can range anywhere from $10 to $25 for just the materials such as the wiring, light switches, and more. 2  The average cost for a bathroom fan ranges from $200 to $400 for each fan. The average cost for a bathroom fan ranges from $200 to $400 for each fan. 2  This can be even higher for the project to be completed by a reputable, licensed, bonded and insured service provider.