Christian Brothers Mechanical Services, Inc. is a full-service commercial mechanical heating, ventilation, and air conditioning contractor. With more than 280 employees we are one of the largest regional HVAC companies, serving Los Angeles, Orange, San Diego, Riverside and San Bernardino counties.

Founded more than 35 years ago, Christian Brothers remains a family-owned company, committed to delivering superior mechanical and service solutions. We are proud of the relationships that we have built with our clients over the years, and in our MOD rate of .56 due to a focus on employee safety by our entire team.

Contact us today to see how we can assist you in your HVAC projects.

35 Years of Excellence!

Commercial HVAC Services

Unit Replacement

Mechanical Piping

Sheet Metal Fabrication

Design Build & Engineering



Service & Maintenance

Projects- Completed & Qualifications

24-Hour HVAC Service

Our service department is available 24-hours a day, 7 days a week for all commercial HVAC repairs. Our certified service techs are conveniently located across Southern California to quickly resolve any HVAC service need.