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.
The average cost of a new furnace, not including central air, is $1,950 to $5800. I understand how useless that wide range is, to many people looking for an average cost. However, the price you pay will vary widely, depending on the type of heating system, (gas, oil or electric) the size of your home, energy efficiency, and the difficulty of the installation in your home.