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Introduction

Leaky ductwork is one of the most common hidden problems in Florida buildings. The U.S. Department of Energy estimates that homes lose 20–30% of conditioned air through duct leaks. That’s money wasted on energy bills, added strain on your HVAC system, and hot or cold spots throughout your building.

Two main solutions exist: traditional duct sealing and Aeroseal technology. Here’s how they compare, and which might be best for your Tampa Bay facility.

What Is Traditional Duct Sealing?

How It Works

• A technician locates leaks manually by inspecting ductwork.
• Mastic sealant or foil-backed tape is applied to holes, seams, and cracks.
• In some cases, ducts are wrapped with insulation for added efficiency.

Pros

• Effective at sealing large, visible leaks.
• Lower upfront cost than Aeroseal.
• Straightforward process many HVAC technicians can perform.

Cons

• Labor-intensive and time-consuming.
• Hard to access ducts in walls, ceilings, or tight mechanical spaces.
• Typically seals only 60–70% of total leaks, leaving hidden ones untreated.

What Is Aeroseal Duct Sealing?

How It Works

• The duct system is temporarily sealed and pressurized.
• A computer-controlled machine introduces a safe, non-toxic sealant mist into the ducts.
• The particles find leaks and bond to them from the inside out, even gaps as small as a pinhole.
• The system generates a before-and-after leakage report showing exactly how much efficiency was gained.

Pros

• Seals hidden leaks that traditional methods miss.
• Proven to reduce leakage by up to 95%.
• Improves comfort by eliminating hot and cold spots.
• Helps lower energy bills and extend HVAC lifespan.

Cons

• Higher upfront cost than traditional sealing.
• Requires certified Aeroseal equipment and technicians.

Tampa Tip: Why Aeroseal Matters in Florida Buildings

In Tampa Bay, most ductwork runs through hot ceiling plenums, chases, and unconditioned mechanical spaces, places where manual sealing is nearly impossible. Even small leaks in these areas can waste a lot of energy as cooled air escapes into 120°F unconditioned air.

Because Aeroseal works from the inside out, it seals every leak throughout the entire system, making it especially effective in Florida’s climate.

Which Option Is Better?

• Traditional Duct Sealing: Best for buildings with a few accessible leaks and a smaller budget.
• Aeroseal: Best for owners and facility teams who want maximum energy savings, verified results, and a long-term solution.

Many Tampa Bay building owners find that Aeroseal pays for itself in just a few years through lower utility bills and improved comfort.

When to Call Millian Aire

If your building suffers from uneven temperatures, high energy bills, or dusty indoor air, leaky ducts may be the cause. Millian Aire’s certified technicians offer both traditional duct sealing and Aeroseal services.

Our team will evaluate your duct system and recommend the solution that provides the best value for your building and its occupants.

📞 Schedule a Duct Sealing Consultation
🔗 Learn About Aeroseal Technology
🔗 Check Our Service Areas

Conclusion

Leaky ducts don’t just waste money. They compromise your comfort and indoor air quality. While traditional duct sealing can help with simple, visible leaks, Aeroseal provides a more effective, whole-system solution.

Trust Millian Aire HVAC, Tampa’s duct sealing experts, to deliver proven results and lasting comfort.