Why Ducts Leak
Duct systems typically consist of sheet metal sections joined together or flexible ducting that can deteriorate over time. Even professionally installed systems develop leaks at connections, seams, and joints due to factors such as:
- Settling and shifting of the home structure over time
- Vibration from HVAC system operation
- Temperature fluctuations causing expansion and contraction
- Poor initial installation or craftsmanship
- Rodent damage or other environmental factors
The Garden Hose Analogy
If your garden hose has holes or loose connections, you lose water pressure and efficiency at the nozzle. Similarly, with duct leaks, conditioned air escapes into attics, crawl spaces, and walls, forcing your HVAC system to work 20-40% harder to maintain comfort levels. This not only increases energy costs but also creates pressure imbalances that result in uneven airflow throughout the home, poor indoor air quality, and lower system performance.