Building Environmental Systems - BES™ Operator Class I - 989

Mohawk College Certificate

One of the most highly recognized certifications for building operations in Canada, the Building Environmental Systems – BES™ program is designed to provide education for the efficient and safe operation and maintenance of today's complex buildings. It is recommended that applicants be employed in building operations.

The BES™ program adheres to the fundamental premise that "the building is a system" in which heating, air conditioning, refrigeration, ventilation, electrical power, lighting, water and air supply are not separate isolated systems but are connected and interdependent. Focus on the knowledge required to understand the functioning of all systems in commercial, office, institutional and residential buildings. There is also a focus on sustainability. The programs look at how buildings can be operated and maintained more efficiently.

Two certificates are offered: Building Environmental Systems – BES™ Operator Class II and Building Environmental Systems – BES™ Operator Class I.

Program Length

Approximately  2 years
Cost ** subject to change

~ $310 per course + textbooks

Intakes Fall, Winter, Spring
Course Load 5 to 10 hours per week, per course
Program Contact
Continuing Education Technology

Ontario Secondary School Diploma (OSSD) or equivalent (Mohawk Academic Upgrading, GED) OR 19 years of age or older.

You do not need to apply to begin this program. Start by ensuring you meet the admission requirements listed above and then register for the courses listed in the Program of Studies when they are offered.  Some courses have prerequisites, so please check the Program of Studies for details. Find out how to register for a course.

The program of studies displayed below applies to students starting the program in the 2019/20 academic year. Students who began in other academic years may require different courses to be eligible to graduate. If you have questions regarding a strategy for completion contact Continuing Education - Technology and Skills.

Click on the Course number or Course title for more information on each course. 

Visit the Mohawk College Bookstore Textbook Search (opens in new window) for information on textbooks.

A selection of courses are available each term. Courses that are currently not available (N/A) for registration may be offered in the future – check back frequently.

Mandatory Courses

Register Course number Course title Course Hours
Course description: Explore building systems in a holistic way recognizing the interactions that exist among the various mechanical systems and encouraging building operators to be conscious of overall operations including system operations, safety, environmental considerations and energy efficiency. Key concepts include considering buildings as a system and the components of the building envelope.
Credits: 3
Course description: Explore the systems associated specifically with hospital buildings with their unique requirements and regulations.
Credits: 3
Course description: Examine the energy and resource efficiency challenges of large buildings and how to address them. Topics include a review of building operating systems, energy audits, energy management, and indoor air quality.
Credits: 3
Course description: Examine and explain air handling systems and fans, filters and ductwork. Investigate the design and implementation of related preventative maintenance programs.
Credits: 3
Course description: This course, intended for Building Operators will study the basics of electricity, sources of electricity and building electrical services. In this course students will examine protective devices and measuring consumption with emphasis on receptacles, switches and solenoids, electric motors and starters. Students will also study the basics of lighting, fixtures and maintenance of these electrical systems.
Credits: 3
Course description: Examine operation and maintenance of boilers, pipe systems and plumbing for building operators. Explain hot water and steam boilers and their accessories, oil and gas burners, heating controls, water pipes, fittings, valves, pumps and fire protection and alarm systems.
Credits: 3
Course description: This is an introduction to the operation and maintenance of refrigeration and air conditioning equipment for building operators. In this course you will cover refrigerants, chillers, controls, instrumentation, condensers, and cooling towers. You will also study heat pumps, absorption systems, energy conservation and heat recovery.
Credits: 3
Course description: Examine and explain automatic controls and their working. Investigate how are they applied and interconnected.
Credits: 3
Course description: Explain why treatment is so important to the life of equipment. Examine the importance of knowing what water treatment is, its effects on equipment and the terminology of water treatment.
Credits: 3

The list of scheduled course offerings for this program is below. Please note that all offerings are subject to change. Not every course is offered every semester, so please consider this schedule when planning your academic path.

Course Code Course Name Spring 2020
(May to Aug)
Fall 2020
(Sep to Dec)
Winter 2021
(Jan to Apr)
Spring 2021
(May to Aug)
BLDG10710 Energy Efficiency in Large Building        
BLDG10700 Building Systems Overview     Classroom  
BLDG10709 Hospital Building Systems     Classroom  
BLDGBES04 Electrical       Classroom
HRAPBES01 Heating       Classroom
BLDGBES03 Air Handling&Prevent Maintenance   Classroom    
HRAPBES02 Air Conditioning And Refrigeration Classroom      
STENBES05 Controls   Classroom    
STENBES06 Water Treatment Classroom      
Getting Started

Login to MyMohawk
MyMohawk is the college portal used to access your student account information, email, grades and more. Your username and password can be found on the Continuing Education Acknowledgement of Registration & Student Account form that was sent to you after you registered for your course. Visit the Getting Started - MyMohawk Guide for step-by-step instructions.

Access Mohawk Email
On the MyMohawk Home screen you will see a link to Mohawk email. Visit the Getting Started – Mohawk Email Guide to learn how to set up your account on your devices.

Access eLearn
On the MyMohawk Home screen you will see a link to eLearn. Visit the Getting Started - eLearn Guide for step-by-step instructions. Please note your course will not appear in eLearn until the scheduled start date.

Find your Classroom
Room assignments for Continuing Education are available on the WhereEnCampus Portal. Visit Room Listings for more information. 

Find your Textbook
Use the Mohawk College Textbook Search to find your course materials. 

Explore Student Services available