Associate of Occupational Studies in Mechanical Maintenance Engineering

icon-clock Duration: 15 Months

Upcoming Class Start Dates


Class Schedules

Lower Division Courses

Morning (M-F) Afternoon (M-F) Evening (M-Th)
7:30am-12:30pm 12:45pm-5:45pm 6:00pm-10:00pm

Upper Division

Morning (M-Th) Afternoon Evening
7:30am-12:30pm N/A 5:30pm-10:30pm

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.

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What can you do in 15 months?

Mechanical maintenance engineering covers a broad range of potential employment options in heating, ventilation, air conditioning and refrigeration (HVAC/R). Graduates of this program would be great candidates for entry-level jobs that require maintaining and servicing large, complex systems in the HVAC/R industry. Some career options are:

  • 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
  • Maintenance Electrician
  • Boiler Operator

Employment is Expected to Grow for HVAC/R in the US to 414,200 Jobs by 2028!i

Flexible Class Schedules

Class schedules range from morning, afternoon and evening, depending on the program and campus location. RSI offers flexible schedules whether you are just graduating from high school, changing your career, or transitioning from military to civilian life. We work hard to find the right program and the right schedule to help you succeed. Contact us for more information on upcoming class times and start dates for the AOS in MME program.

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    Employer Partnerships

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    The Right Tools for the Job

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Program Courses

Prerequisite Courses

This program requires completion of the Electro-Mechanical Technologies program prior to enrolling. Here are the prerequisite courses included in Electro-Mechanical Technologies:

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.

Basic College Mathematics

This course presents the fundamental concepts of a pre-algebra course. Students will be introduced to whole numbers, fractions and decimals, integers, order of operations, percents, signed numbers, measurements, geometry, probability and basic algebra concepts.

BCM 100

  • 45 Contact Hours
  • 45 Contact Hours
  • 3.0 Contact Hours

English Composition

This course develops written communication skills with an emphasis on understanding the writing process, analyzing readings, and practicing writing for personal and professional applications.

ENG 100

  • 29.5 Contact Hours
  • 29.5 Contact Hours
  • 2.0 Contact Hours

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 formulas used in fan operation and analysis, ductwork and air distribution, air outlets, air balancing, belt and sheave analysis and air filters.

MME 205

  • 50 Contact Hours
  • 50 Contact Hours
  • 2.0 Contact Hours

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.

MME 210

  • 50 Contact Hours
  • 50 Contact Hours
  • 2.0 Contact Hours

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.

MME 215

  • 50 Contact Hours
  • 50 Contact Hours
  • 2.0 Contact Hours

Transformers and Technical Math

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.

MME 220

  • 50 Contact Hours
  • 50 Contact Hours
  • 2.0 Contact Hours

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.

MME 225

  • 50 Contact Hours
  • 50 Contact Hours
  • 2.0 Contact Hours


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.

MME 240

  • 50 Contact Hours
  • 50 Contact Hours
  • 2.0 Contact Hours

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.

MME 245

  • 50 Contact Hours
  • 50 Contact Hours
  • 2.0 Contact Hours

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.

MME 250

  • 50 Contact Hours
  • 50 Contact Hours
  • 2.0 Contact Hours

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.

MME 255

  • 50 Contact Hours
  • 50 Contact Hours
  • 2.0 Contact Hours

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.

MME 260

  • 50 Contact Hours
  • 50 Contact Hours
  • 2.0 Contact Hours


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.

MME 265

  • 45 Contact Hours
  • 45 Contact Hours
  • 2.0 Contact Hours

Sound Interesting? Contact us for more information on this course and the Mechanical Maintenance Engineering program below.

Alumni Testimonials

iEmployment is expected to grow for Heating, Air Conditioning, and Refrigeration Mechanics and Installers (499021) in the US to 414, 200 through 2028 and in Arizona to 11,320 through 2026.