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.
First there is the cost of the new HVAC system. This cost can range between $750 -$3000 depending on the brand, size and the model. The average cost for a new furnace is approximately $1,400 for the unit and includes no other elements costs which are used for installing the furnace.