HERS Rating

HERS Rating

HERS Rating

HERS rating is the diagnostic method which completely measures the energy performance of a building to assess if it satisfies California Department of Energy regulations. HERS raters, like Rapid Duct Testing, conduct HERS testing for builders, contractors, HVAC installers and homeowners to ensure that HVAC systems and insulation are properly installed.

HERS stands for Home Energy Rating System, a system that applies to new and altered constructed residential and non-residential buildings.

When HERS is triggered, a HERS rater performs HERS testing to if the HVAC system meets current regulations. If corrections are indicated, the installer makes the necessary modifications, then Rapid Duct Testing facilitates the process of acquiring a HERS permit.

Additionally, when a homeowner is not confident that their AC and heating contractor has done the job correctly, Rapid Duct Testing can validate the efficiency of their work.



Title 24 is the regulation that mandates HERS testing for new and existing residential and nonresidential buildings in the state of California.

The California Energy Commission (CEC) selected CHEERS, a HERS Registry, and CalCERTS, a HERS provider and trainer, to oversee this important regulatory process which supports our statewide goal to reduce energy consumption.

Rapid Duct Testing is certified by the State of California to conduct HERS testing, and produce Title 24 reports.

As an independent HERS rater and Title 24 testing company we provide third party objectivity to enforce this energy saving regulation.

It has been very rewarding in working with General Contractor and HVAC Companies in obtaining Title 24 compliance, and passing the financial and energy savings on to the end user. Our customers feel confident knowing that Rapid Duct Testing answers to these agencies, enforcing the highest of standards and accuracy.



 A Quality of Insulation Installation Test (QII Test) is an additional inspection that Rapid Duct Testing performs to further uphold HERS standards and ensure maximum energy efficiency.

This goes beyond duct insulation and pertains to the quality of insulation installation in the framing of the walls, floors and ceilings of a building.

The aim is to verify that there are no substantial gaps or voids. The accuracy of installation, the degree to which the insulation fills the cavity, and if the insulation is compressed can have a huge impact on the HERS rating and the performance of the system.