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Who We Are

Founded 13 years ago, ATC Mechanical has grown from a modest startup into a trusted leader in the HVAC services industry in Walnut Creek, CA. With over 20 years of hands-on experience, our founder Stiliyan Simov has steered our company through substantial growth phases, all while maintaining a commitment to quality and efficiency that sets us apart from the competition. Unlike other companies, ATC Mechanical is celebrated for its personal leadership, top-of-the-line services, and competitive pricing strategies, all underpinned by our status as a Licensed Contractor in California.

Our deep roots in the Walnut Creek, CA, community, combined with a broad service offering that includes HVAC installation, repairs, preventative maintenance, and system upgrades, allow us to cater to both residential and commercial clients. This wide-ranging expertise ensures we can handle any project, providing reliable and efficient solutions tailored to our client’s unique needs.

ATC Mechanical’s success is built on a foundation of profound local knowledge, extensive industry experience, and a relentless drive for excellence. Our team is dedicated to upholding the highest standards of service, ensuring each client engagement adds value and exceeds expectations. As we look to the future, we remain committed to enhancing the environments and lives of those we serve in Walnut Creek, CA, and beyond, continuously pushing the boundaries of what is possible in HVAC solutions.