If your home has ductwork running through unconditioned spaces like the attic or crawl space, there's a good chance you're losing 20-30% of your conditioned air before it ever reaches your living spaces. Leaky ducts are one of the biggest energy wasters in most homes—and one of the most overlooked opportunities for savings and improved comfort.
Grande Air Solutions provides professional air duct sealing for homeowners throughout Pflugerville, Austin, Round Rock, Hutto, Cedar Park, Georgetown, and surrounding communities in Travis and Williamson counties. Our licensed technicians identify leaks throughout your duct system and seal them using proven methods that deliver lasting results, keeping your conditioned air where it belongs.
Founded by Isael Garcia in 2011, Grande Air Solutions has spent over 14 years helping Central Texas families reduce energy waste and improve home comfort. We've seen countless homes where duct sealing delivered immediate, measurable improvements in both utility bills and comfort. If rooms in your home are always too hot or too cold, or if your energy bills seem higher than they should be, leaky ducts may be the culprit.
Most homeowners don't realize how much conditioned air they're losing through duct leaks:
Energy Waste The Department of Energy estimates that duct leaks account for 20-30% of heating and cooling energy in typical homes. That means up to 30 cents of every dollar you spend on heating and cooling escapes before reaching your living spaces.
Comfort Issues When conditioned air leaks out of ducts in your attic, less air reaches the rooms at the end of duct runs. These rooms stay too hot in summer and too cold in winter, no matter how long your system runs.
Contaminated Air Entering Supply Leaky ducts don't just lose conditioned air—they also draw in unconditioned air from attics, crawl spaces, and wall cavities. This air often contains dust, insulation particles, allergens, and other contaminants that bypass your filter.
HVAC System Strain When ducts leak, your HVAC system runs longer trying to maintain temperature. This extra runtime increases wear, raises energy bills, and shortens equipment lifespan.
Humidity Problems In humid Central Texas, leaky ducts can draw moisture-laden air into your system, increasing indoor humidity and creating conditions favorable for mold growth.
Temperature Imbalances Leaky ducts create pressure imbalances that affect airflow throughout your home. Some rooms may have too much air while others have too little, regardless of damper settings.
Duct leaks typically occur at:
Connections and Joints Where duct sections connect, seams and joints often separate or were never properly sealed during original construction. These gaps can leak significant amounts of air.
Register Boots Where ducts connect to floor, wall, or ceiling registers, gaps often exist between the duct boot and the surrounding structure.
Air Handler Connections The connection between ductwork and the air handler is a common leak point, especially at return plenums.
Flexible Duct Connections Where flexible duct connects to rigid duct or fittings, connections often loosen or were improperly secured during installation.
Trunk Line Seams The seams running the length of rectangular trunk lines commonly leak, especially in older duct installations using tape that has failed.
Branch Takeoffs Where branch lines tap into main trunk lines, gaps around the takeoff fittings are common sources of leakage.
Damaged Sections Physical damage from storage items, pest activity, or contractor traffic in attics creates holes and tears that leak conditioned air.
We use multiple approaches to seal duct leaks, selecting the best method for each situation:
Mastic Sealant For accessible duct connections and seams, we apply mastic—a fiber-reinforced adhesive that permanently seals gaps and remains flexible to accommodate temperature changes. Mastic is the professional standard for duct sealing.
UL 181-Rated Metal Tape For certain applications, we use UL 181-rated aluminum tape (not standard duct tape, which fails over time). This tape meets stringent performance standards for HVAC applications.
Aeroseal Technology For ducts with limited accessibility, we offer Aeroseal—an advanced sealing technology that works from inside the ductwork. Aeroseal particles are injected into the duct system under pressure, where they accumulate at leak points and seal gaps from within. This method can seal leaks that are impossible to reach manually.
Connection Reinforcement Where connections have separated or loosened, we secure joints mechanically before sealing to ensure lasting results.
Step 1: Diagnostic Testing We perform duct leakage testing to measure your system's current leakage rate. This quantifies the problem and provides a baseline for measuring improvement.
Step 2: Visual Inspection We inspect accessible ductwork to identify visible leaks, damage, and poorly connected sections.
Step 3: Leak Location Using diagnostic equipment, we identify leak locations throughout the system, including areas that aren't visually accessible.
Step 4: Sealing Application We seal identified leaks using the appropriate method for each location—mastic for accessible areas, Aeroseal for inaccessible sections.
Step 5: Verification Testing After sealing, we retest your system to verify reduced leakage and document improvement.
Step 6: Documentation You receive documentation showing before and after leakage rates, demonstrating the improvement achieved.
Lower Energy Bills Most homeowners see 20-30% reduction in heating and cooling costs after professional duct sealing. The investment typically pays for itself within 2-3 years through energy savings.
Improved Comfort When conditioned air reaches every room as designed, hot and cold spots disappear. Rooms that were always uncomfortable finally stay at the temperature you set.
Better Air Quality Sealed ducts prevent contaminated attic or crawl space air from entering your supply. Your filter can do its job because unfiltered air isn't bypassing it through leaks.
Reduced HVAC Runtime When your system doesn't have to compensate for duct losses, it runs less frequently. This reduces wear on equipment and extends system life.
Quieter Operation Duct leaks can cause whistling and whooshing sounds. Sealing eliminates these noises for quieter HVAC operation.
Environmental Impact Using less energy reduces your carbon footprint. Duct sealing is one of the most effective ways to reduce home energy consumption.
Potential Rebates Some utility companies and energy efficiency programs offer rebates for duct sealing. We can help you identify available incentives in your area.
For ductwork that's inaccessible for manual sealing, we offer Aeroseal—the most advanced duct sealing technology available:
How Aeroseal Works:
Aeroseal Advantages:
Ideal For:
How much will I save on energy bills? Most homeowners see 20-30% reduction in heating and cooling costs after professional duct sealing. Actual savings depend on your current leakage level, utility rates, and system usage. We can estimate potential savings based on diagnostic testing.
How long does duct sealing take? Manual sealing of accessible ductwork typically takes 3-5 hours. Aeroseal treatment takes 4-6 hours including setup, sealing, and verification testing.
Is Aeroseal safe? Yes. Aeroseal particles are UL-listed and made from the same material used in hairspray and chewing gum. The material is non-toxic and has been used safely in hundreds of thousands of homes, hospitals, and commercial buildings.
How long does duct sealing last? Professional duct sealing using mastic or Aeroseal provides permanent results that last the life of your ductwork—typically 20+ years. Unlike duct tape, which fails within a few years, proper sealing materials maintain their bond indefinitely.
Can I seal ducts myself? While you can seal visible, accessible leaks with mastic, most duct leaks are in areas you can't easily reach or see. Professional sealing addresses the entire system, including hidden leaks that cause the most energy loss.
Will duct sealing help rooms that are always too hot or cold? Often yes. If uncomfortable rooms result from conditioned air leaking before it reaches them, duct sealing can dramatically improve comfort. We can assess whether duct leaks are contributing to your comfort issues.
Should I seal ducts before or after duct cleaning? We recommend cleaning first if your ducts are dirty. Sealing over accumulated debris isn't ideal, and duct cleaning first ensures the best seal adhesion and overall results.
