Pressure differences between outside air and inside air, wind, heat, cold, vent fans, central heating systems can create depressurization through duct leakage, stack effect or naturally occurring weather.
High energy bills cost you money and are a result of excessive leakage through the building shell and/or duct system. By testing air leakage losses, we can diagnose and recommend an energy savings plan.
Can't handle the pressure? Call us today!
HVAC Rater Service & ACIS serve the Northern California Central Valley and the San Francisco East Bay Area. HVAC Rater Service & ACIS specialize in HERS testing and Home Performance evaluation.
Our areas of expertise include:
Residential / Commercial
New Construction / Existing Homes
Title 24 HERS Rater
Duct Testing and Refrigerant Charge and
Cooling Coil Airflow and Fan Watt Draw
Field Verification and Diagnostic Testing
Title 24 Energy Compliance Documentation
HVAC System Design & Verification
Energy Audits
We provide Seamless Service throughout the San Francisco East Bay Areas as well as the Sacramento & Surrounding areas
California Title 24 Duct Testing
HVAC Air Duct/Refrigerant Verification testing and Certification Services
Documentation Support Services
Residential / Commercial HVAC Consulting
Our San Francisco East Bay counties include: Alameda, Contra Costa, Solano and portions of Santa Clara counties.
Our Northern California counties include: Sacramento, Yolo and portions of Butte, Nevada, Placer, San Joaquin and Sutter counties.
If you live in Pittsburg, Antioch, Brentwood, Oakley, Livermore, Pleasanton, Dublin, San Ramon, Danville, Pleasant Hill, Lafayette, Moraga, Walnut Creek, Concord, Martinez or even Pacheco, our San Francisco East Bay Area office will be happy to help with your HERS duct test, refrigerant charge measurement or more! Just give us a call.
industry news
Effective January 1st 2010, California contractors in climate zones 2, and 9 through 16, will be required to do duct sealing when changing out HVAC equipment in existing residential buildings. Ducts that leak 15% (6% for newly constructed buildings or an entirely new duct system) or more must be repaired to reduce the leaks. After your contractor tests and fixes the ducts, you choose whether to have an approved third-party field verifier check to make sure the duct testing and sealing was done properly or to have your house included in a random sample where one in seven duct systems are checked. Third party field verification is performed by a certified field verification and diagnostic testing rater (HERS rater). These new requirements apply when replacing the air handler, the outdoor condensing unit of a split system air conditioner or heat pump, cooling or heating coil, or the furnace heat exchanger.
In addition to the duct sealing requirements described, when a split space conditioning system is “altered” in residential buildings in climate zones 2 and 8 through 15, contractors are required to do a refrigerant charge measurement using Commission-approved protocols. This must be verified by a certified HERS rater.
If your installation includes all new equipment and ductwork in climate zones 10 - 15, your contractor must verify the cooling coil airflow in the system is at least 350 cfm per nominal ton and the wattage for the fan (fan watt draw) is equal to or less than 0.58 watts per cfm.
Our Elk Grove/Sacramento office serves Fairfield, Vacaville, West Sacramento, Sacramento, El Dorado, Folsom, Roseville, Rocklin, Loomis and even Lincoln! You may even see us in Stockton, Lodi and Galt.
John Henry HERS rater is our affiliate for the Coachella Valley. If you live in Banning, Desert Hot Springs, Indio, La Quinta, Palm Desert, Palm Springs, Cathedral City or the surrounding Coachella Valley area, Give John a call.
Call us for all your HERS Title 24 HERS duct test and more needs!
