Air Duct Sealing & Air Duct Repair Services in San Antonio, TX and the Surrounding Areas
Sealing the ducts of your heating and air conditioning system is an important step in energy efficiency.
Duct System Leakage
The average home in San Antonio loses 20% of the air that moves through the duct system to leakage. We can evaluate the existing duct work to identify the areas conditioned air is escaping. We use a thermal imager to scan the entire system. Areas of defect invisible to the naked eye stand out with the latest technology.
Duct work can be damaged in many ways.
- People working in your attic can crush or knock loose ducts.
- Rodents can chew holes in the duct.
- The duct may not have been properly sealing during initial installation.
All of these issues can be corrected by our trained air conditioning technicians and installers.
Poor Indoor Air Quality
Many homes suffer from poor indoor air quality. The usual culprit is unsealed return air chases and unsealed duct work. If the return air is not sealed well, it will pull hot, dirty attic air into your air conditioning system. The worst issue with this is that the attic air is mixed with the conditioned air after the filter. Adding high MERV filters (MERV is the Minimum Efficiency Reporting Standard used to measure the effectiveness of filters, full definition here ) only makes the problem worse. Air will travel the path of least resistance. The high MERV filter offers much more resistance than the open path to the attic.
Correct Ductwork vs. Incorrect Duct Work
The duct work shown on the left is installed in the correct manner. Notice the white ring of mastic that seals the area where the flexible duct meets the duct board mixing box. The duct in the top right area is securely strapped up so there are no kinks that would reduce air flow. The picture on the right shows a return air chase that is open to the attic. Insulation and debris has fallen from the attic to the bottom of the chase.