Difference Between Upflow and Downflow Furnaces Difference Between Downflow And Upflow Furnace
HVAC Maintenance Tips You Need to Know! Upflow Furnace: This type draws in cool air at the bottom, heats it, and pushes the warm air upward. · Downflow Furnace: In a downflow system, air enters at the In this HVAC Video, I show How the Water is Held Back in the Condensate Pan and Will Overflow without a Condensate Water ...