Your Custom Text Here Free HVAC Duct Sizing Calculator Professional HVAC Duct Sizing Calculator Professional Duct Sizing Calculator Equal friction method (0.1" w.g. per 100 ft) - Industry standard Input Method: I Know the CFM Required I Know the Unit Tonnage CFM (Cubic Feet per Minute): Enter the total CFM required Unit Tonnage: Standard: 400 CFM per ton for cooling Duct Type: Supply Air (Trunk/Main) Return Air Duct Shape: Round Rectangular Calculate Duct Size Recommended Duct Sizing
