How do I figure out what size snowmelter or how much melting capacity is need for my particular area and or how many hours it will take to melt?

The formula for calculated snow tonnage is:
{Depth of snow (inches) X Area to clear (sq.ft.)} /4000 = Tons of snow. Next, divide the tons by the size of the snowmelter to calculate how many hours it will take to melt the snow.