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.
The largest single cost of installing a new bathroom fan is the price of the fan itself. How much that costs will depend entirely on how elaborate you want to get. You can install a small simple exhaust fan that has no extras and gets the job done to adequately ventilate your bathroom.Or you can install a decorative fan and light combination that matches the decor of your room.ow much that costs will depend entirely on how elaborate you want to get. You can install a small simple exhaust fan that has no extras and gets the job done to adequately ventilate your bathroom. Or you can install a decorative fan and light combination that matches the decor of your room.