What Causes Sweaty Ductwork & How To Prevent It

During the cold months of winter, unused air conditioning ducts in unconditioned areas can start accumulating moisture. This condensation usually occurs due to low duct temperatures. When not addressed, the problem can lead to mold growth, which can affect indoor air quality

One of your leading air conditioning companies, All Seasons, Inc., shares how moisture builds up in ducts and how to prevent ducts from sweating. How Moisture Forms in DuctsDucts will become cold without heated air passing through them. Insulation isn’t enough to maintain an elevated or stable temperature in unused ducts, though it can slow the heat that transfers through the duct wall. Without replacing this heat, the temperature in the duct will drop. When the temperature becomes too low, the air within your home will start to lose moisture, and condensation will begin to form. This can also cause frost and ice to form in the ducts. You’ll only notice this problem when the unconditioned space becomes warm and the ice melts. Make sure to have your HVAC system checked as soon as possible to ensure it’s in good shape. As one of the area’s best HVAC and electric panel companies, you can count on All Seasons, Inc. for all your heating and cooling needs. How to Stop This Problem & Prevent Its ReccurenceMetal ductwork has no insulating capabilities, instead taking on the temperature of the air that flows through it. Insulating your ductwork to meet the current code will help keep the conditioned air from condensing. Maintain healthy humidity levels by sealing gaps and cracks in the walls around your ductwork. Air sealing will fill any gap and prevent humid air from reaching the ducts, reducing the likelihood of condensation. Another way to control the humidity levels in your ductwork is by installing a dehumidifier. This will enable you to maintain healthy moisture levels in your home, improve your indoor air quality and get rid of condensation on ductwork and plumbing. At All Seasons, Inc., we specialize in HVAC repairs, maintenance, installations and more. We’re one of the area’s premier air conditioning and furnace companies. Call us at (253) 879-9144 or fill out our contact form to schedule a free in-home consultation. We serve clients in Puyallup and Tacoma, WA.