COP compares cooling produced to work input, while EER expresses cooling capacity per unit electrical power. BEE Star Ratings indicate an appliance's energy-efficiency level.
Duration of the online course: 9 hours and 11 minutes
5
(2)
Build job-ready HVAC skills with this free refrigeration and air conditioning course—learn cycles, COP/EER, refrigerants and ratings, plus practice questions.
Understanding refrigeration and air conditioning is a practical advantage in many technical careers, from building maintenance to industrial operations. This free online course builds a solid foundation in how cooling systems work, why they are designed the way they are, and how efficiency and performance are evaluated in real conditions. You will move from core principles of refrigeration to the logic behind common system choices, giving you the confidence to discuss, analyze, and troubleshoot concepts used across HVAC and refrigeration applications.
The learning path starts with the essential thermodynamics of refrigeration, distinguishing refrigerators from heat pumps and focusing on key measures of performance. You will understand COP and why it matters, connect cooling capacity with power input, and relate efficiency concepts to real-world indicators such as EER and star ratings. Rather than treating these metrics as formulas to memorize, the course frames them as decision tools that influence operating cost, system selection, and responsible energy use.
As you progress, you will explore ideal and practical refrigeration cycles, including the reversed Carnot perspective and air refrigeration systems. You will also examine the reversed Brayton or Bell Coleman cycle and how actual performance differs from theoretical behavior, developing intuition around losses and component efficiencies. Aircraft refrigeration concepts introduce applications where design constraints and operating conditions shape the cycle, helping you appreciate how engineering trade-offs appear in specialized systems.
The course then shifts to vapour compression refrigeration, the most widely used approach in modern cooling. You will follow the cycle from concept to analysis, interpret common diagrams, and recognize sources of deviations such as pressure drops and non-ideal compression. Along the way, practice questions help you check understanding and strengthen problem-solving, making the theory more usable when reading specifications, comparing systems, or preparing for technical interviews.
Finally, you will learn how refrigerants are designated, what properties make a refrigerant suitable, and how environmental indicators like ODP and GWP affect choices today. By the end, you will have a clear, structured understanding of refrigeration and air conditioning fundamentals, with an efficiency-aware mindset aligned with current industry expectations.
9 hours and 11 minutes of online video course
Digital certificate of course completion (Free)
Exercises to train your knowledge
100% free, from content to certificate
How are COP, EER, and BEE Star Rating used to compare air-conditioning efficiency?
COP compares cooling produced to work input, while EER expresses cooling capacity per unit electrical power. BEE Star Ratings indicate an appliance's energy-efficiency level.
What is the difference between a reversed Carnot cycle and a vapour compression refrigeration cycle?
The reversed Carnot cycle is an ideal benchmark cycle, whereas a vapour compression system is the practical cycle used in most refrigerators and air conditioners.
Why do refrigerant ODP and GWP matter in air-conditioning systems?
ODP measures a refrigerant's potential to damage the ozone layer, while GWP measures its heat-trapping effect. Lower values reduce environmental impact.
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Course comments: Refrigeration and Air conditioning
MOHSIN GULAB
highly recommended..
MOHSIN GULAB
highly recommended..
Jean
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Jean
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