ACS Welcomes Gary Bittner as Service/Maintenance Account Manager 

Ontario, Calif. – Air Control Systems, Inc. (ACS), Southern California’s leading commercial and industrial HVAC company, is pleased to announce the addition of Gary Bittner as Service/Maintenance Account Manager.

“Gary brings over 20 years of experience in marketing and sales. He has a passion for garnering a deep understanding of customer needs – and exceeding those expectations, which will help serve our customers’ well,” ACS President & CEO Bob Leotaud said.

Prior to ACS, Gary held various leadership roles in support of commercial property management and real estate professionals, including Director of Business Development, General Manager, Senior Account Executive, and Marketing & Business Resource Manager.

Gary is an active member in Building Owners and Managers Association (BOMA), the International Facility Management Association (IFMA), and the Institute of Real Estate Management (IREM). He is active in several committees including: BOMA’s Education Committee, IFMA’s Orange County Golf Committee (Chair), and IFMA’s Board of Directors. He also serves the Orange County community as an instructor with the state of California for insurance and real estate, a board director for the Tustin Police Foundation, and is on the advisory board for the Foster Care Auxiliary Orange County.

ACS looks forward to Gary bringing his rich experience and expertise in marketing and sales, as well as his community-driven spirit to serve our customers according to our core values of Quality, Dedication, Teamwork, Integrity, and Respect.

“I’m thrilled to join the ACS family and apply my dedication to building strong relationships and providing exceptional service every day. I look forward to delivering on ACS’ promise of making our customers’ comfort my passion,” Bittner, said.



About ACS

In operation since 1991, Air Control Systems offers complete design-build, installation, building automation, preventative maintenance, repair, unit replacement and mechanical piping services with an unwavering commitment to delivering the highest level of customer service. Learn more at