SERVICE SPEC
Air Duct Repair & Sealing
When you need professional Air Duct Repair & Sealing in San Antonio, TX, White Brothers San Antonio Air Duct Cleaning delivers licensed, insured service backed by years of local experience. Our certified technicians use industry-leading equipment and proven methods to ensure your home or business receives thorough, reliable results every time.
Whether you're dealing with routine maintenance, an urgent repair, or a full system upgrade, we provide transparent pricing, detailed explanations, and workmanship you can trust. We proudly serve San Antonio, TX and all surrounding neighborhoods with same-day availability when possible.
Leaky ductwork is one of the most common and costly hidden problems in San Antonio homes, with the U.S. Department of Energy estimating that typical duct systems lose 20 to 30 percent of conditioned air through gaps, holes, and disconnected joints before it ever reaches living areas. White Brothers San Antonio Air Duct Cleaning inspects your entire duct system for damaged flex duct, separated joints, torn duct board sections, and deteriorated mastic or tape seals, then repairs and re-seals problem areas using UL-listed foil tape, professional mastic sealant, and replacement flex duct where needed.
Common causes of duct damage in San Antonio homes include pest activity (rats and squirrels nesting in attic ductwork), improper installation with flex duct over-stretched or kinked, aging tape that has dried and cracked, and physical damage during attic storage or HVAC servicing. Even small gaps at register boots or air handler connections can allow unconditioned attic air — which can exceed 140°F in summer — to be drawn into your duct system, dramatically undermining cooling performance and comfort.
After repairs are completed, we verify all connections are properly secured and sealed and can perform a basic airflow check at registers to confirm improved distribution throughout your home. Properly sealed ductwork not only reduces energy waste but also prevents unconditioned air, attic dust, and pest debris from entering your duct system between cleanings. This service pairs naturally with a full duct cleaning and is included as a recommendation in every post-cleaning inspection report we provide.
- Licensed and fully insured technicians
- Free estimates and upfront pricing
- Same-day and emergency service available
- Commercial and residential expertise
- Satisfaction guaranteed on every job
- Locally owned — we know your area