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.
Installation of the new furnace will add an extra $400 to $600 to the purchase price. It typically takes less than 10 hours for a contractor to install a new furnace. Most contractors will include removal of the old furnace as part of the quote, but some contractors charge an additional fee. If the home configuration necessitates any extra tools or equipment, it can add $100 or more to the labor cost.