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.
You can also choose to install electric heat, which comes from small registers located around the border of each room. Although the cost of installation averages between $1,000 and $2,000, this type of furnace isn't a good idea for heating large spaces and comes with high energy costs. One newer option gaining popularity is a heat pump, which pulls in heat from the air or ground using refrigerant coils.