Students can enroll in programs that cover the skills necessary to install, design, troubleshoot and service HVAC-R systems. Graduates of these programs are qualified to sit for exams administered through HVAC-R industry organizations such as the Air-Conditioning Refrigeration Institute (ARI) and the North American Technician Excellence (NATE). Though online courses may be part of these programs, other courses will require on-campus participation to learn hands-on skills.
Online HVAC-R Courses
Below are some courses related to refrigeration that are often offered online.
- Introductory HVAC-R Course: Courses in heating, ventilation, air conditioning and refrigeration fundamentals explore several aspects of HVAC-R technology, from basic HVAC-R terminology to safety in the workplace. Content includes heat transfer methods, applied physics for HVAC-R systems, industry HVAC-R measurements and handling hazardous materials.
- HVAC-R Electrical Course: These classes explore basic electrical theory as it applies to CD and AC circuits. Ohm's law, circuit characteristics and schematic circuit symbols are examined as students look at control components in HVAC-R systems. Course topics also include control methods, transformers, motor theory and common motors, starting components, wiring and pressure residential thermostats.
- HVAC-R Structures Course: Students analyze system functions, including airflow measurement methods, psychometrics, air properties and accurate comfort parameters. These courses emphasize common HVAC-R installation standards, heat transfer concepts, heat-loss issues and conditions of air.
- HVAC-R Cooling System Course: Mechanical compression refrigeration cycles and essential operation components are covered to prepare HVAC-R technicians to size, install or design a cooling system. Students are introduced to basic refrigeration cycle physics, metering devices evaporation, cooling equipment and duct sizing.