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ADUs · Garage Conversions · Additions

ADU Title 24 and ECC testing

ADUs go through the same energy code as any new home, and the verification list is often longer than builders expect. We schedule the rough and final visits around your build so testing never holds up the final inspection.

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Rough duct leakage test with a Duct Blaster in an open-frame build

What an ADU usually needs

Most ADUs in LA are heated and cooled by a mini-split or a small ducted heat pump, so refrigerant charge and airflow come up often. Ducted systems add duct leakage. When the walls and ceiling are insulated as part of the build, QII is usually on the list too, and QII has to be inspected before the insulation is covered.

The exact list is in the Title 24 report for the permit. Send it over and we will tell you which visits you need and when.

Two visits, timed to the build

The first visit happens with the framing open, for QII and rough duct testing if there are ducts. The second happens once the system is installed and running. Miss the first window and the fix can mean opening finished walls, so it is worth a call as soon as insulation is scheduled.

Garage conversions and additions

Conversions and additions follow the same logic on a smaller scale. Sometimes it is a single measure, sometimes the existing system is extended and the whole duct system needs testing. Tell us the scope and we will tell you what applies.

How it works

  1. 1Tell us about the job

    Address, scope, and where you are in the permit. Two minutes by phone or text.

  2. 2We schedule around your build

    Rough and QII while the framing is open, final once the system runs.

  3. 3Testing on site

    Calibrated equipment and a straight answer on the spot.

  4. 4Report and registration

    Report plus the signed CHEERS certificate, the same day.

Common questions

Do ADUs need ECC / HERS testing?

Yes. An ADU is new construction under Title 24, and the measures marked for field verification in its report need a certified rater.

When should I call you on an ADU?

When insulation is scheduled. QII and rough duct testing need the framing open.

Do mini-splits need testing?

Often yes, for refrigerant charge and sometimes airflow, depending on the equipment and the Title 24 report.

Other tests we run

ECC TestingECC field verification in Los Angeles, formerly HERS testing. Title 24 TestingTitle 24 field verification for LA permits. Duct Leakage TestingDuct leakage testing for Title 24 permits in Los Angeles. AC Change-Out TestingReplacing an AC, furnace or heat pump in Los Angeles? The permit needs HERS / ECC verification.

Where we work

Full service areaThe San Fernando Valley and the rest of LA County. EncinoEncino is home base for us, so it is the area we can usually reach the fastest. Sherman OaksSherman Oaks is a few minutes from us, and a lot of our work is there: change-outs in older homes, remodels in the hills, and ADUs behind houses on the flats.. Studio CityStudio City jobs tend to be remodels and additions on older homes, and the testing has to fit around a crew that is already mid-project. Woodland HillsWoodland Hills sits at the hot west end of the Valley, where summer afternoons push air conditioning harder than almost anywhere else in LA. Van NuysVan Nuys is a mix of postwar single-family streets and small apartment buildings, and both show up on our schedule.

Need a test scheduled?

Call or text with the address and where you are in the permit. We will come back with a time and a price.

Call (310) 867-5591 WhatsApp ecctesting26@gmail.com