WMA is better than SMA because of the ability to vary the weights! Time Series: Exponential Smoothing (ES) Main idea: The prediction of the future depends mostly on the most recent observation, and on the error for the latest forecast.
New Furnace Costs. A new furnace cost roughly $3,800 and most homeowners pay between $3,250 and $4,420 to install a new furnace. The lowest price that a homeowner might pay is $1,500, while the maximum price a homeowner has reported paying for a furnace replacement or installation was $8,000.
Electric Furnace Costs The average cost to install an electric furnace is between $748 and $4,999, depending on the brand you have installed and the amount of labor required (typically about 10 hours). Other price factors include whether you are replacing or installing a new unit, if your vents need repair or replacing, and the current state of your insulation.