Sweaty Ductwork: What Causes It & How to Fix It

Sweaty ductwork can affect the performance of your HVAC system, creating a breeding ground for mildew and mold which can then spread throughout your home. These microorganisms won’t just cause unsightly stains on your walls and ceilings; they can also produce an unpleasant odor, compromise your home’s structure and pose significant health risks.

Find out what causes this issue, how to fix it and ways to prevent it from one of the area’s leading home efficiency services.

Why Ducts Sweat

If your ductwork isn’t properly insulated, the metal components of the system will become cold. Condensation forms when warm, moist air meets the cold duct surface, and the resulting water droplets can then harm your ceilings, drywall and insulation.

Unless the inside of the duct is heated, condensation will continue to form, and water will start building up within the duct. Frost and ice can then form if the temperature of the duct gets low enough. Inadequate duct insulation can make your interior uncomfortable and waste a significant amount of energy.

Ways to Get Rid of Sweats

Make Sure Your Ductwork Is Up to Code – Insulate your ductwork to current code levels to keep it from conducting the warm or cool air flowing through them. When heated or cooled air meets the insulation, it stops there. When warm air touches your ductwork, which should be the same temperature as the air around it, it’s unlikely to condense. Have your ductwork assessed by a professional to make sure it’s up to code. For reliable heating, cooling and home efficiency services, you can count on Mason BPP.

Seal Air Leaks – Sealing gaps and cracks in the walls around your ductwork will help maintain healthy humidity levels in your home. It will also keep humid air away from your ductwork, significantly reducing the likelihood of condensation.

Invest in a Dehumidifier – To keep a low humidity level in your ducts, consider installing a dehumidifier. This will be especially beneficial if your ductwork is in your attic or crawl space. A dehumidifier can help eliminate condensation on your plumbing and ductwork, as well as improve indoor air quality.

Turn to Mason BPP for your heating, cooling and home efficiency needs. We specialize in home audits, furnaces, air conditioners, indoor air quality and more. Call us at (925) 256-1092 or fill out our contact form to request a quote.