California rule
Can I hire my own HERS rater for the duct test?
Yes. The state says a homeowner can hire a rater who is independent of the contractor and can ask to see the completed HERS forms.
California Energy Commission Checked November 2026
Ductwork installation, San Jose
New runs and new vents, laid out for the rooms that sit cold. We install ducts and vents in attics and crawl spaces.
New runs
New runs go in for a new system, an addition, or a room that never got enough air.
We lay out the runs so each room gets the air it needs.
Insulated flex or metal duct, hung and supported.

New vents fitted where each run ends.

California Energy Commission
Under California's rules, permitted duct work can trigger HERS field testing, including a duct leakage test.
California Energy Commission Checked November 2026
California Energy Commission
Duct work permitted on or after January 1, 2026, meets the 2025 Energy Code.
California Energy Commission Checked November 2026
California rule
Yes. The state says a homeowner can hire a rater who is independent of the contractor and can ask to see the completed HERS forms.
California Energy Commission Checked November 2026
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