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About Us - Management

Donald Lemons, President
Mr. Lemons founded the company in 1985 as a one-person firm, he has been the President of Christian Brothers Mechanical Services ever since, and throughout the past 30 years he has grown the company to more than 100 employees.

Mr. Lemons began his HVAC career as a field technician. He first attended school at a local community college, and completed courses in HVAC Installations and Honeywell Controls, and so began his HVAC career. Mr. Lemons has been actively involved in designing and installing many large projects, as well as the startup and commissioning of jobs.

Mr. Lemons is a board member of Associated Builders and Contractors (ABC) and is actively involved in their apprentice program.

Steve Knisley, Vice President of Service
Mr. Knisley is responsible for retrofit and new construction, purchasing, dispatch, sales, service and installation departments. Steve has an AA degree and attended Stationary Engineering Technical School. He has worked in air conditioning and heating for more than 35 years. He was the Vice President of Process Cooling and Heating, which was acquired by Christian Brothers Mechanical Service.

In the past decade Mr. Kinsley has worked with the Service Department, ensuring proper procedures, paperwork, customer service concepts, dispatch and software, and communication techniques. He is also actively involved with generating new sales.

Jeff Richards, Controller
Mr. Richards is responsible for the financial operations of the Christian Brothers Mechanical Services, including accounting, finance and credit functions.  Prior to assuming this position he spent the last 24 years working for a commercial contractor in Southern California, including the Controller position for 18 years.  He holds a B.A. Degree in Business with a concentration in Accounting from California State University San Bernardino.

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11140 Thurston Lane
Mira Loma, CA 91752
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To schedule a Service Appointment  email us at
Counties We Serve
Los Angeles
San Diego
San Bernardino
CA Contractor License 499547
Copyright 2018 @ Christian Brothers, Inc. - All Rights Reserved