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What is Blow-Through vs. Draw-Through Systems about?

This document discusses the differences between blow-through and draw-through heating unit designs. Blow-through units have the fan before the burner, while draw-through units have the fan after the burner. Comparing CFM ratings between the two can be misleading since blow-through CFM is measured at the cold air inlet while draw-through CFM is measured at the hot air outlet. To properly compare the two, the inlet CFM of a blow-through unit must be converted to an expanded outlet CFM since air volume increas

Author

Aditya Patil

Language

EN