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Faq

CAL HERS FAQ's

Keeping our customer’s convenience in mind, we have answered all the most frequently asked questions here:

CAL HERS FAQ's

"HERS" stands for Home Energy Rating System. It is the common term used for testing on a home, usually on the HVAC unit, to "rate" the energy efficiency. In California, HERS testing is mandatory on any new HVAC installation or major part replacement.
Title 24 refers to the section of California Energy Codes which deal with new residential or commercial buildings. A Title 24 report done by an energy consultant (like CalHERS) is required before receiving a new construction permit from any building department in California.
HERS testing is a legal requirement (in California) on new HVAC systems and major repairs, to ensure that the installing contractor's work is up to par with the California Energy Commission's standards. HERS testing must be done by a third party to ensure honesty and accurate results. HERS testing must be done by a certified HERS tester.
Depending on the job, the following tests are most frequently require in HERS testing: Duct Test Refrigerant Test Air Flow Test Fan Efficiency Test Blower Door Test See below questions for explanations of each test.
A duct test measures the leakage of the ducts in your HVAC system, thus also determining a major part of the system's efficiency. Duct tests are a major part of the HERS testing system, and California has very strict laws on new HVAC system's leakage amounts. A HERS test with a duct test will verify that the duct leakage is under the legal amount, and we will provide paperwork confirming the results.
A refigerant test measures the pressure, temperature, and levels of refrigerant charged (or loaded) into your HVAC system. Our HERS rater then analyzes the results to ensure efficiency in this area.
An airflow test is performed to make sure that the power of the HVAC system and the registers in the home/business are optimal for the air flow.
Air Balancing is a special service we provide where we measure and adjust the airflow coming from the different registers, to ensure that a steady, even air flow is reaching all areas of the building and house, despite the distance from the HVAC unit. Upon conclusion of the total air balancing service, we provide a detailed report of air flow measurements and adjustments.
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