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Understanding HVAC Condensate Traps

Condensate traps exhibit many failure modes. Trap failures due to blockage, drying out, breakage, freeze-up and/or improper installation can compromise the seal against air ingestion through the condensate drain line. Traps with insufficient height between the inlet and outlet on draw-through systems can cause the drain to back-up when the fan is on, possibly causing drain pan overflow or water droplet carryover into the duct system. The resulting moist surfaces can become sources of biological contamination that can impact on indoor air quality. Seasonal variations, such as very dry or cold weather, may adversely affect trap operation and condensate removal. The CostGard™ Condensate Drain Seal is inherently reliable. It is simple, has no moving parts, is self-cleaning, self-regulating and maintenance free. This reliability has been proven during more than twenty years of successful field operation. Tens of thousands are in operation in various types of facilities, indoors and outdoors, in every state in the United States plus Puerto Rico and the District of Columbia. Not one has become blocked or failed to operate properly.