Your single source, throughout California.
A self-performing HVAC, refrigeration, and kitchen services provider that has served California for over 40 years.
One source. One call. Every system.
MAS is your single source, self-performing HVAC, refrigeration, and kitchen services provider operating throughout California. One source and one call meets all of your service requirements, from refrigeration and HVAC to full kitchen service.
Our technicians stay with us for the long haul. That longevity and their qualifications mean we serve everyone from single-location restaurants to statewide, multi-outlet operations with the same care and accountability.
- 40+
- Years serving California
- 24/7
- Emergency response
- 5
- Offices statewide
- 1
- Single source, self-performing
“You have my personal commitment we will meet and exceed your service needs.”
John Billheimer Sr.
Founder & CEO
Everything you expect from a market leader
24/7 emergency service
Free estimates
Quick-ship parts delivery
Factory-certified technicians
Electronically dispatched
Comprehensive maintenance agreements
Paperless, modern technology
Competitive, transparent pricing
Ready for a partner you can count on?
Join the California operators who trust MAS with their most critical equipment.