What Is Aeroseal Duct Sealing and Could It Save You From an Unnecessary AC Replacement?

If you’ve been telling yourself that your AC just isn’t powerful enough, you may be right that something needs to change. However, the change might not be what you think.

Before assuming the equipment is the problem, you need to find out how much of your conditioned air is actually reaching the rooms it’s supposed to cool.

Ductwork Is a System Drain

Your ductwork connects your air handler and every room in your home. When it works correctly, virtually all of the air your system cools gets where it’s going. When it doesn’t (joints have separated, flexible duct has cracked or kinked, or connections have loosened from thermal expansion and contraction), a lot of that air escapes into your attic before it ever reaches a vent.

In Las Vegas, this problem is worse than almost anywhere. Attic temperatures regularly shoot past 150 degrees in summer, and that accelerates duct aging. The Department of Energy estimates average duct leakage at 20 to 30% for typical homes. In older Las Vegas homes, it can be much higher.

What Does Aeroseal Actually Do?

Aeroseal works from the inside out. Rather than requiring a technician to access every duct joint manually (which is often impossible without tearing out walls or ceilings), the process injects a mist of sealant into the pressurized ducts. Those particles travel with the airflow and fill the spaces and holes where air is escaping, creating a seal at each leak point.

The process is computer-monitored throughout. Before the treatment begins, the system measures baseline leakage. After sealing, it measures again. You get documented results showing exactly how much leakage was reduced.

A newly sealed duct system can reduce leakage by 90% or more. For a home that was losing 25% of its conditioned air to the attic, that’s the same as getting your air conditioner back.

AC Repair vs. Replacement

Aeroseal is very relevant to homeowners weighing whether to repair their current system or replace it entirely.

If your AC is underperforming, you probably blame the equipment. Sometimes the equipment is the problem. Aging compressors, low SEER ratings, and refrigerant leaks are all real issues.

However, if significant duct leakage is part of the picture, replacing the equipment without addressing the ducts means installing a new system into the same broken delivery network. You’ll get a more efficient unit pushing conditioned air into a 150-degree attic, which means only a partial fix.

On the other hand, sealing the ducts without addressing a failing compressor or a system that’s just too old won’t solve the performance problem entirely either. Duct leakage and equipment condition need to be evaluated together, not separately.

That’s where our team can help. An AC service visit that evaluates both the equipment and the duct system gives you an accurate picture of what’s actually driving your performance issues, and whether the path forward is Aeroseal duct sealing, equipment repair, replacement, or some combination.