Find a Contractor Offering Mechanical Acceptance Testing Services

“… California Energy Commission (CEC) expects authorities having jurisdiction (AHJ) to enforce the mechanical systems ATT requirements to all nonresidential permit applications submitted on or after October 1, 2021.” (CEC Public Notice – June 28th, 2021)

As of October 1, 2021, any project requiring a MATT, will need to be completed on an approved database.
The following contractors are registered on an approved database (MechCheck) and offering Mechanical Acceptance Testing Services.
Company NameStreet AddressCityZip CodePhone NumberWebsiteEmail
ABM Building Solutions LLC3640 Northgate Blvd, Suite 200Sacramento95834916-381-4526Email
ACCO Engineered Systems PAS888 E. Walnut St.Pasadena91101818-244-6571WebsiteEmail
ACCO Engineered Systems SAC9290 Beatty DriveSacramento95826916-520-2100WebsiteEmail
ACCO Engineered Systems SNL1111 Aladdin AveSan Leandro94577510-346-4300WebsiteEmail
ACH Mechanical Contractors Inc411 Business Center CourtRedlands92373909-307-2850WebsiteEmail
Air Control Balancing, Inc.2140 North Winery, Suite 103Fresno93703559-454-8000Email
Air Systems Inc.940 Remillard CourtSan Jose95122408-693-1507WebsiteEmail
AireMasters12556 McCann DRSanta Fe Springs90708562-944-6302WebsiteEmail
American Air Balance Co., Inc.4721 E Hunter AveAnaheim92807714-693-3700WebsiteEmail
Anderson Systems75B Robin Hill RdGoleta93117805-683-6133Email
Anderson, Rowe & Buckley2833 3rd StreetSan Francisco94107415-282-1625WebsiteEmail
Applied Air Conditioning, Inc4250 Artesia AveFullerton92833714-545-1917Email
Associate Mechanical Contractors622 S Vinewood StEscondido92029760-294-3517WebsiteEmail
Associated Air Balance457 E Arrow Hwy Ste DAzusa91702626-915-8117WebsiteEmail
Associated Air Balance and Certification1430 Koll Circle Ste 105San Jose95112408-330-6170Email
Balance America Inc.1185 Linda Vista Dr Ste BSan Marcos92078760-798-9255WebsiteEmail
Bos Sheet Metal Inc3325 52nd AveSacramento95823916-428-1780WebsiteEmail
Certified Air Balance Co., Inc.9970 Bell Ranch DriveSanta Fe Springs90670562-941-1200Email
Champion Industrial Contractors1420 Coldwell AveModesto95392209-524-6931Email
Circo System Balance4100 Florin Perkins RoadSacramento95826916-889-3714WebsiteEmail
Circulating Air Inc7337 Varna AveNorth Hollywood93065818-764-0530Email
Couts Heating & Cooling, Inc.1693 Rimpau AveCorona92881951-278-5560Email
Critchfield Mechanical Inc. of Southern California15391 Springdale StreetHuntington Beach92649949-390-2900WebsiteEmail
Inland Air Balance Inc465 Borrego Ct, Suite CSan Dimas91773909-305-4881WebsiteEmail
M2 Mechanical6929 Sunrise Ave, Suite 105-HCitrus Heights95610916-838-9204Email
Marelich Mechanical Co., Inc.24041 Amador St.Hayward94544510-785-5500WebsiteEmail
McClanahan Inc DBA Hartmanaire12 GardeniaLake Forest92630951-479-6855WebsiteEmail
National Air Balance Company, Inc.4171 Business Center DrFremont94538510-623-7000Email
O.C. McDonald Co., Inc.1150 W San Carlos StSan Jose95126408-295-2182Email
Precision Air Balance Co Inc1240 N Jefferson St Ste HAnaheim92807-1632714-630-3796WebsiteEmail
Silicon Valley Mechanical Inc2115 Ringwood AveSan Jose95131408-943-0380Email
Southland Industries - Union City, CA33225 Western Ave.Union City94587510-477-3300Email
United Mechanical Inc2161 Oakland RdSan Jose95131408-232-9000Email
University Mechanical & Engineering Contractors, Inc. DBA Spira-Loc1168 Fesler StEl Cajon92020619-956-2500Email
Western Allied Corporation12046 E. Florence Ave.Santa Fe Springs90670562-944-6341WebsiteEmail
Xcel Mechanical Systems, Inc.1710 W. 130th St.city90249310-660-0090WebsiteEmail