Associate of Occupational Studies in Mechanical Maintenance Engineering Degree Program

Train in mechanical maintenance engineering for a higher level HVAC/R career in just 15 months!

Complete maintenance training in just 15 months – blend of on campus and online learning. First 9 months coursework is the completion of the on campus Electro-Mechanical Technologies program. Remaining 6 months coursework is available on-campus or online.

RSI’s 15 month Associate of Occupational Studies in Mechanical Maintenance Engineering Degree program includes the completion of the on campus Electro-Mechanical Technologies program. The remaining coursework for the Associate of Occupational Studies in Mechanical Maintenance Engineering Program is available online or on-campus. Mechanical Maintenance Engineering covers a broad spectrum of potential employment options. In addition to the options which are open to Heating, Ventilation, Air Conditioning and Refrigeration (HVAC/R) Technicians and Electricians, graduates of this maintenance training would be likely candidates for entry level into industrial and institutional maintenance engineering positions, industrial refrigeration service and other career paths which require maintenance and service of large, complex systems.

Take the next step toward an exciting HVAC/R career.
The RSI team is here to help you through every step of the process.

Career Options:

  • Facilities Maintenance Engineer/Technician
  • HVAC/R Service Technician
  • HVAC/R Installation Technician
  • Refrigeration Service Technician
  • Refrigeration Installation Technician
  • Low-Temperature Field Technician
  • Restaurant & Retail Refrigeration Technician
  • Commercial Refrigeration Technician
  • Solar Panel Technician
  • Power Plant Field Technician
  • Solar Thermal Repair Technician
  • Solar Panel Installer
  • Solar Systems Troubleshooter
  • Facilities Maintenance Engineer/Technician
  • Maintenance Electrician
  • Boiler Operator

Prerequisite Classes – Electro-Mechanical Technologies Program:

  • Fundamentals of Electricity
  • Fundamentals of Solar
  • Electric Wiring – Residential
  • Electric Wiring – Commercial
  • Fundamentals of Refrigeration
  • Refrigeration Systems and Practices
  • Comfort Systems – Residential
  • Comfort Systems – Commercial
  • Advanced Troubleshooting

Click Here for class descriptions

Advanced Level Classes Required For Degree:

  • Basic College Mathematics
  • English Composition
  • Principles and Applications of Air
  • Motors and Applications
  • Predictive Maintenance and Piping Systems
  • Electrical Systems and Heat Pumps
  • Cooling Towers and Maintenance
  • Chillers
  • Fundamentals of Boilers
  • Boilers and Boiler Systems
  • Preventative Maintenance and Planning
  • Computer Applications and Decision Making
  • Entrepreneurship

Advanced Level Detailed Course Descriptions:

Principles and Applications of Air

This course includes the study of typical pneumatic control systems: The evaluation, maintenance, operation and troubleshooting of the air station, controlled devices, controllers, receiver controllers, transmitters, relays and switches which make up a pneumatic control system. An introduction to air compressors which drive a pneumatic system is also discussed. Also provided are the mathematic concepts similar to those described in Liquid Piping, as applied to the advanced study of the properties of air and heat calculations with the use of a psychrometric chart. Along with information, calculations and formulae used in fan operation and analysis, ductwork and air distribution, air outlets, air balancing, belt and sheave analysis and air filters.

Motors and Applications

This course covers the techniques and calculations (including evaluation of expressions, order of operations, symbols of inclusion and power exponents) to determine load and sizing requirements for heating and cooling equipment. Included is the 24 hour method of load calculation and sizing of residential and commercial air conditioning and heating equipment as well as commercial refrigeration equipment.

The course also covers the application of single and three phase motors. Applications include motor types, operation, components, control hookups, motor feeder and branch circuit conductors, motor protection, motor control circuits and motor connections and testing, connections, transformer schematics and auto transformers of low and high voltage systems.

Predictive Maintenance and Piping Systems

This course covers why and how compressors fail, how to detect the cause of compressor failures and how to prevent repeat compressor failures. Commercial serviceable hermetic reciprocating compressors are covered, as well as Rotary and Scroll compressor operation and servicing. Also covered are maintenance of reciprocating, rotary and centrifugal air compressors and compressed air systems. This course also covers types of distribution systems, materials and accessories found in water refrigeration systems. Also covered are concepts including evaluation of expressions, order of operations, symbols of inclusion, power exponents, proportions and computation of surface area uses applied to liquid piping operations. Included are: calculations and methods to determine pressure drops and pipe friction in water and refrigeration lines; techniques and methods to calculate the sizes of suction, discharge and liquid line of single and multiple piping systems in HVAC equipment and water lines; and methods and procedures to size water pumps and calculate pump head.

Electrical Systems and Heat Pumps

This course covers a study of single and three phase transformers. Included are the operation, inspection maintenance, installation and testing of single and three phase transformers. Delta and Wye load balancing for single and three phase transformers, sizing, protection, connections, transformer schematics and auto transformers of low and high voltage systems. A review of basic heat pump systems along with high efficiency split systems, heat pumps, variable speed and capacity products, including the familiarization, installation, operating sequence, operation and common servicing techniques. Current troubleshooting techniques will also be covered.

Cooling Towers and Maintenance

This course covers cooling tower history and theory. Included are waste heat disposal, maintenance and inspection of interior and exterior structure, mechanical equipment including fans, gear boxes, power transmission and motor. Also covered are different types of cooling towers, water distribution systems, upgrading of existing cooling towers, water treatment, and water filtration and purification methods. Also covered is the installation, start-up and troubleshooting of 15-200 ton conventional reciprocating liquid chillers. Included are conventional chiller controls, step controllers used in chiller capacity, electronic controls and operation, microprocessor chiller controls, their operation, troubleshooting, and flotronic chiller operation and troubleshooting.


This course covers the differences in components and operation between centrifugal and reciprocating chillers. Included is a study of the centrifugal compressor, its operation, components and troubleshooting. The familiarization, operating sequence, start up, troubleshooting application, and operation of the microprocessor expanded service panel are covered. Finally, central station air handling units with Product Integrated Controls (PIC) operation and troubleshooting is covered. In addition this course covers steam and direct fired absorption systems as well as screw compressor systems. Included are system operation, system components, system controls, control sequences, start up, maintenance, troubleshooting and installation procedures for both types of systems. Also covered is an absorption system.

Fundamentals of Boilers

This course covers the principles of low pressure boiler operation. Included are boiler operation, fittings, feedwater accessories, steam and combustion controls, draft control and water heating systems. In addition, the course covers the principles of high pressure boiler operations, to include steam boiler types, package and field erected boilers, the steam system, feedwater systems, fuel system, feedwater and fuel heaters, pumps, regulators, traps, superheating, desuperheating, and pressure reducing systems and steam boiler operation.

Boilers and Boiler Systems

This course covers the techniques and procedures for boiler operation and evaluation. Included are oil fired boiler installation, steam boiler operation, hot water boiler operation and evaluation, boiler start-up, service and troubleshooting, as well as boiler instruments, water treatment and boiler room safety. Also provided are the fundamentals of multiple boiler operation, hydronic systems, the principles of zoning, system sizing and calculations, zone valves, boiler selection, as well as boiler piping, installation and troubleshooting.

Preventative Maintenance and Planning

This course covers the techniques and procedures for boiler and chiller inspection and maintenance. Included are preventive and predictive maintenance procedures, maintenance of boiler room and heating equipment, fire protection and structure, and maintenance of centrifugal, reciprocating, OPAC, and modular liquid chillers. In addition, this course covers the fundamentals and procedures necessary for starting and running a personal business. Topics on writing successful business plans, licensing requirements and information, different types of business organizations, business assets, and business operation.

Computer Applications and Decision Making

This course covers the fundamentals, components and operations of computers and computer systems. Included is an introduction to computer basics, computer components and operations, hardware configuration and software applications. Also covered are a demonstration and application of miscellaneous software relating to the industry. This course also emphasizes the concept that service is produced and consumed simultaneously and addresses communications and active listening methods to ensure this transaction is profitable and positive. Includes servicing techniques in dealing with customers in a positive manner.


In this course, students learn academic theory, review case studies, and complete exercises in critical thinking that help student entrepreneurs start-up a small business and related communication skills with an emphasis on professionalism.

Ready to enroll? It only takes 4 steps:

  1. Contact RSI for more information.
  2. Schedule a personalized tour of our campus with an Admissions Representative. For out-of-state students, we have a virtual tour of our campus you can view.
  3. Apply for admission to RSI.
  4. Start school!

For information about our graduation rates, the median debt of students who completed this program, and other important program information, please see our Gainful Employment Disclosure.


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