04 / Keep conditioned air on its path

Advanced Duct Sealing

Find the leaks before choosing how to seal them.

You condition air for the rooms you live in. When ducts leak outside that space, some of that air can escape before it gets there. Find the problem, choose the right repair, and measure the change.

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01 / Advanced Sealing

Comfort starts with distribution

Uneven temperatures and weak airflow are reasons to investigate, not proof that sealing is the answer. Duct location, connections and condition help explain where a technician should look. ENERGY STAR’s typical-home leakage estimate provides context; only an evaluation can describe your system.

Reference: ENERGY STAR ↗

02 / Advanced Sealing

Accessible sealing and aerosol sealing

Accessible joints can be sealed manually with suitable materials. Aerosol-based sealing introduces sealant particles into a prepared duct system; particles collect at leaks as air escapes. The approach can complement manual work rather than replace it.

DOE’s Building America guidance describes combining injected sealing with manual treatment of accessible areas. Equipment must be protected and the system assessed for suitability by a qualified technician. Product instructions and actual conditions guide the work.

Reference: DOE / PNNL Building America Solution Center ↗

03 / Advanced Sealing

A sealant is not a structural repair

Disconnected ducts, damaged sections and other physical defects need attention before advanced sealing. Ask which problems will be repaired manually, which leaks the proposed process can address and what remains outside the scope.

There is no requirement to purchase sealing after an inspection. A repair or a finding that further work is unwarranted can be the right outcome. The decision should follow evidence and your approval.

04 / Advanced Sealing

We don’t just guess. We measure.

Our measurement-first approach calls for a documented baseline and a comparable follow-up result when sealing is performed. Ask for the test method, pressure, units and boundary, along with the actual readings.

A sealing machine’s total-leakage reading is not automatically a whole-system leakage-to-outside test. PNNL distinguishes those measurements. No percentage on this site represents a promised result for your home.

Reference: DOE / PNNL Building America Solution Center ↗

Same air. A more intentional path.

Leaky ducts

Conditioned air can escape into spaces you don’t use.

Sealed ducts

Air stays where it belongs — in your home.

Conceptual illustrations, not measured customer results. No individual savings are implied.

Before you decide

Questions about advanced sealing

Does every home need advanced sealing?

No. Actual duct condition, access, test findings and your goals determine whether sealing is appropriate. A DuctRx Score alone cannot establish the need.

Will I save 20–30% on my bills?

That is not what the ENERGY STAR figure means. It describes typical duct air loss, not a guaranteed bill reduction. Individual savings have not been calculated here.

Do you have before-and-after customer results?

No verified customer case studies are published yet. Future results will need documented measurements and publication permission; illustrations are not customer evidence.

Could a utility incentive help?

Program rules, the heating utility and qualifying contractor matter. A Score cannot establish eligibility.

Explore Washington duct sealing rebates →

Your home. A clearer next step.

Ready to find out what’s really going on?

Start with your concerns. Let the findings guide the work.