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.
For a 2000 square foot home, an installed propane 1 furnace averages between $3000 and $5000. Parts: A typical propane 1 furnace costs between $800-$2000, depending on the brand and efficiency. Larger houses will require larger furnaces in the $3,000 range.