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.
1 A new furnace in a central heating system costs $2,500 to $7,500 or more. 2  If you donât need ductwork, the cost of a new heating and cooling system can be significantly decreased.3  In cases where new HVAC duct is required, however, you might pay $1,000 to $3,000. A new furnace in a central heating system costs $2,500 to $7,500 or more. 2  If you donât need ductwork, the cost of a new heating and cooling system can be significantly decreased.