Condensate drain line " The pipe that runs from the air conditioning cooling coil to the exterior or internal building drain, to drain away condensation.
These furnaces always have a condensate drain line. Sometimes the condensate drains into a floor drain, but if there's no drain available the condensate drains into a small pump which pumps the fluid uphill into the plumbing drain.
See also: Size, Chimney, Boiler, Furnace, Plumbing
 
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