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
Frank M Booth4220 Douglas BlvdGranite
Alpha Air Balancing Agency, Inc.PO Box
Freedom Air Balance, Inc.9444 Oasis RoadPinon
Pacific Test and Balance, Inc.4771 Mangels
MESA31945 Las Plumas AveSan
Equal Air Balance Company357 E. Arrow Highway Suite 206San
ABM Building Solutions LLC3640 Northgate Blvd, Suite
ACCO Engineered Systems PAS888 E. Walnut
ACCO Engineered Systems SAC9290 Beatty
ACCO Engineered Systems SNL1111 Aladdin AveSan
Air Control Balancing, Inc.2140 North Winery, Suite
Air Systems Inc.940 Remillard CourtSan
AireMasters12556 McCann DRSanta Fe
American Air Balance Co., Inc.4721 E Hunter
Anderson Systems75B Robin Hill
Anderson, Rowe & Buckley2833 3rd StreetSan
Applied Air Conditioning, Inc4250 Artesia
Associate Mechanical Contractors622 S Vinewood
Associated Air Balance457 E Arrow Hwy Ste
Associated Air Balance and Certification1430 Koll Circle Ste 105San
Balance America Inc.1185 Linda Vista Dr Ste BSan
Bos Sheet Metal Inc3325 52nd
Certified Air Balance Co., Inc.9970 Bell Ranch DriveSanta Fe
Champion Industrial Contractors1420 Coldwell
Circo System Balance4100 Florin Perkins
Circulating Air Inc7337 Varna AveNorth
Couts Heating & Cooling, Inc.1693 Rimpau
Critchfield Mechanical Inc. of Southern California15391 Springdale StreetHuntington
Inland Air Balance Inc465 Borrego Ct, Suite CSan
M2 Mechanical6929 Sunrise Ave, Suite 105-HCitrus
Marelich Mechanical Co., Inc.24041 Amador
McClanahan Inc DBA Hartmanaire12 GardeniaLake
National Air Balance Company, Inc.4171 Business Center
O.C. McDonald Co., Inc.1150 W San Carlos StSan
Precision Air Balance Co Inc1240 N Jefferson St Ste
Silicon Valley Mechanical Inc2115 Ringwood AveSan
Southland Industries - Union City, CA33225 Western Ave.Union
United Mechanical Inc2161 Oakland RdSan
University Mechanical & Engineering Contractors, Inc. DBA Spira-Loc1168 Fesler StEl
Western Allied Corporation12046 E. Florence Ave.Santa Fe
Xcel Mechanical Systems, Inc.1710 W. 130th
MBO Inc4830 Viewridge Ave., Suite ASan
Western Allied Mechanical1180 O'Brien AveMenlo
Emcor Services Mesa Energy Systems2
G&G Air Conditioning inc.311 W Avenue 33Los
Air Systems Service and Construction10381 Old Placerville
Pan-Pacific Mechanical48363 Fremont
ACH Mechanical Contractors Inc411 Business Center
Air Balance Co., Inc.440 N Barranca
Total Air Balance3724 Placer Corporate
Penn Air Control, Inc.5941 Lakeshore
DKM Heating & Air Conditioning5844 Walnut
MTB1318 Ross St, Ste
Raglen System Balance898 Maestro, suite
Air Management Industries8351 Elm Avenue Ste 102Rancho
Air Systems of Sacramento3850 Happy LaneRancho
Therma1601 Las PlumasSan
Emcor Mesa Energy3701 Seaport BlvdWest
Matrix Air & Hydronic Balancing Co8039 Painter Ave, Suite