Evaporator Drain Tube: Description and Operation

DESCRIPTION





Condensation that accumulates within the HVAC housing is drained through a port located at the bottom of the HVAC housing (1). A rubber condensation drain tube (2) is installed onto the drain port and protrudes through a rubber grommet (3) in the left side floor panel (4) to ensure that any condensate completely drains out of the HVAC housing and to the ground.

NOTE: The condensation drain tube must be kept open to prevent water from collecting in the bottom of the HVAC housing.

The drain tube is designed to keep contaminants from entering the HVAC housing. If the tube is pinched or blocked, condensate cannot drain, causing water to back up and spill into the passenger compartment. It is normal to see condensation drainage below the vehicle in warm weather.

If the condensation drain tube is damaged or missing, it must be replaced.