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 The fan itself can cost anywhere from about $30 to $400, depending on features. 2  A basic, single-speed fan without a light or heater falls on the low end of that range. 3  On the high end, youâll get a top-of-the-line model with a light, a heater, variable speeds and more. 4  Installation generally costs $200 to $400.ost of Having a Bathroom Fan Installed. The total cost depends on the type of fan you choose, the difficulty of installation and local labor rates. 1  The fan itself can cost anywhere from about $30 to $400, depending on features. 2  A basic, single-speed fan without a light or heater falls on the low end of that range.