Why HVAC Duct Leak Testing Is Important

Improving Comfort, Efficiency, and Indoor Air Quality

Did you know that duct leakage can account for up to 25% of total household energy loss?
In fact, leaky ducts often waste more energy than air infiltration through walls, windows, or ceilings.

Whether your system is brand-new or has been running for years, duct leakage is one of the biggest hidden sources of energy waste in homes and commercial buildings alike. That’s why Florida Building Code now requires new HVAC duct systems to be tested for leaks — and why Calvary Mechanical LLC is proud to provide certified duct leak testing services that meet and exceed state standards.

The Hidden Cost of Leaky Ducts

When your ducts aren’t properly sealed, your air conditioner and heater have to work harder to maintain the right temperature — and that means higher utility bills and less comfort.

Leaky ducts can lead to:

  • ⚡ Increased heating and cooling costs

  • 🌡️ Uneven temperatures — hot or cold rooms throughout the home

  • 💧 Excess humidity or moisture problems

  • 😷 Poor indoor air quality as dust, insulation fibers, or attic pollutants are drawn inside

  • ⚙️ Reduced HVAC performance and shortened equipment lifespan

The result? You pay more, your comfort decreases, and your system wears out faster.

Duct Leak Testing Explained

During a duct leak test, our technicians pressurize your duct system and measure how much air escapes. Using advanced diagnostic tools — including infrared imaging and calibrated pressure equipment — we pinpoint leaks and document total leakage to the outside.

Florida code requires duct leakage to be below 4%.
If leaks are detected, our team seals every connection using professional-grade duct mastic and retests to verify compliance.

(The infrared image above demonstrates a real attic inspection — heat escaping from poorly sealed duct joints. Properly sealing and testing ensures compliance, comfort, and energy savings.)

Why Choose Calvary Mechanical for Duct Leak Testing

At Calvary Mechanical LLC, our certified HVAC professionals combine experience, precision, and compliance expertise to deliver measurable results.

✅ Certified testing in accordance with Florida Energy Code requirements
✅ Advanced diagnostic tools including infrared thermal imaging
✅ Professional duct sealing using durable, code-approved materials
✅ Verification reports for inspectors, builders, and homeowners
✅ Energy efficiency guidance to reduce future air loss

We’re not just checking boxes — we’re helping you save energy, improve comfort, and protect indoor air quality.

Schedule Your Duct Leak Test Today

Don’t let hidden duct leaks waste your energy and comfort.
📞 Call (352)-225-8279 or visit our Contact Us page to schedule your appointment today.

Whether you’re a homeowner, builder, or property manager, our team can help ensure your HVAC system is sealed, certified, and running efficiently.

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