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HERS Rater Inspection

A HERS rater inspection is almost always required in most construction projects. This type of inspection is triggered based on your project's Title 24 Compliance Report. A Title 24 is an energy evaluation that is also required in most projects and turned in at the time of submitting plans to your local building department. Currently, there are only two agencies that are appointed by the California Energy Commission to train HERS Raters. CHEERS & CalCERTS. We are certified and trained with both agencies which will allow us to make this portion of your project even easier. In addition to all HERS Inspections, below, you will find some of the common field verifications that we offer.

What We Inspect


Duct Leakage


Fan Watt Draw

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Insulation (QII)


Refrigerant Charge

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Indoor Air Quality (IAQ)

New Houses

State of The Art Equipment


When To Hire Us


New HVAC Installation


New Construction


Garage Conversion (ADU)

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Things To Know

Duct Leakage Test

A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating, ventilating, and air-conditioning (HVAC) ductwork. A duct leakage tester consists of a calibrated fan for measuring an airflow rate and a pressure sensing device to measure the pressure created by the fan flow. The combination of pressure and fan flow measurements is used to determine the ductwork airtightness. The airtightness of ductwork is useful knowledge when trying to improve energy conservation.

QII (Quality Insulation Installation)

The Energy Standards encourage the use of energy-saving techniques and designs for showing compliance. Insulation is one of the least expensive measures to improve building energy efficiency. Insulation requires no maintenance, helps improve indoor comfort, and provides excellent sound control. Adding extra insulation later is more expensive than maximizing insulation levels at the beginning of construction. Innovative construction techniques and building products are being used more often by designers and builders who recognize the value of energy-efficient, high-performance buildings.

Kitchen Range Hood

Kitchen hood HVI listing for airflow and noise (sones)

Photovoltaic Inspection (Solar) 

To comply with the prescriptive requirements, all low-rise single-family and multifamily buildings are required to have a PV system installed unless the building qualifies for an exception.  

Refrigerant Charge

A split-system air conditioner undergoes the final assembly at installation. The installation must be verified to ensure proper performance. Important factors that affect performance include the amount of refrigerant in the system (the charge) and the proper functioning of the metering device. Air conditioner energy efficiency suffers if the refrigerant charge is either too low or too high and if the metering device (TXV or EXV) is not functioning properly. In addition to a loss of efficiency and capacity, errors in these areas can lead to premature compressor failure.

IAQ (Indoor Air Quality)

Verify the dwelling unit ventilation system complies with the airflow rate required by ASHRAE Standard 62.2.

Fan Watt Draw

Fan efficacy requirements are 0.45 watts/cubic feet per minute (CFM) or less for gas furnace air-handling units or 0.58 watts/CFM or less for air-handling units that are not gas furnaces. This requirement applies to single-zone and zonally controlled forced air systems (§150.0(m)13B and 13C).
 Small-duct, high-velocity forced-air systems must meet a fan efficacy of 0.62 Watts/CFM or less and an airflow requirement of 250 CFM/ton or greater (§150.0(m)13D).