AC Repair Services › Air Duct Sealing Service
Air Duct Sealing Service in Lewisville, TX
Duct sealing closes gaps and separations in your supply and return duct system where conditioned air is escaping before it reaches your living space. In Lewisville homes, most of that leakage happens in attic ductwork where summer temperatures routinely exceed 140 degrees, meaning leaked air is immediately wasted. Leaky ducts cause uneven room temperatures, high utility bills, and an AC system that runs longer than it should. Sealing the duct system is one of the few improvements that reduces both comfort complaints and runtime hours simultaneously.
Lewisville AC Repair Pros provides air duct sealing service for homeowners across Lewisville, TX. Call for a free inspection and a written quote before any work begins.
When to Call
When You Need Air Duct Sealing Service
- One or two bedrooms are consistently 5 to 8 degrees hotter than the rest of the house.
- Your utility bills increased significantly after attic insulation was added or disturbed.
- You can feel warm air blowing from gaps around ceiling supply registers.
- A technician found your system is short on return air and traced it to disconnected return ducts.
How It Works
Our Process for Air Duct Sealing Service
- 1
Duct Inspection
We access the attic and trace the duct runs to identify disconnected sections, torn flex duct, and failing mastic at joints.
- 2
Leakage Assessment
We note which branches are leaking most and prioritize sealing based on volume of loss and accessibility.
- 3
Sealing Application
Mastic sealant or metal tape — not standard duct tape — is applied to joints. Disconnected sections are reconnected and strapped.
- 4
Airflow Recheck
After sealing, we verify improved airflow to problem rooms and check that return air is balanced with supply delivery.
Lewisville Context
Why this matters in Lewisville
Lewisville's attic temperatures in July and August make duct leakage especially damaging. Every cubic foot of conditioned air that escapes into a 140-degree attic is replaced by heat load your system then has to overcome.
Straight Talk
About pricing & scope
Scope depends on how much duct is accessible and how many connection points have failed. Ductwork buried under attic insulation or in finished walls costs more to reach and seal.
What This Fixes
Problems We See in Lewisville
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