ESCO Air Conditioning Practice Exam 2025 – The All-in-One Guide to Exam Success!

Question: 1 / 400

What is the common refrigerant used in air conditioning systems?

R-22

R-134A

R-410A

The most commonly used refrigerant in modern air conditioning systems is R-410A. This refrigerant is a hydrofluorocarbon (HFC) blend that has largely replaced older refrigerants such as R-22 due to its higher efficiency and lower environmental impact.

R-410A operates at a higher pressure than R-22, which allows for improved energy efficiency and performance in cooling systems. Additionally, it does not contain chlorine, making it a more eco-friendly choice because it does not contribute to ozone depletion, an important factor given the global emphasis on reducing harmful emissions and protecting the atmosphere.

In many new installations, R-410A is preferred for both residential and commercial air conditioning systems, making it a standard in the industry today. Consequently, understanding the role and advantages of R-410A is crucial for HVAC technicians and anyone involved in air conditioning maintenance and installation.

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