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.