NATE Air Conditioning and Heat Pumps Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the NATE Air Conditioning and Heat Pumps Exam with engaging quizzes and flashcards. Each question is paired with hints and explanations. Ace your test!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which refrigerant is commonly used in modern air conditioning units?

R-22
R-410A
R-134A
R-12

The correct answer is: R-410A

The refrigerant commonly used in modern air conditioning units is R-410A. This refrigerant is favored because it has a higher efficiency and is more environmentally friendly compared to older refrigerants like R-22. R-410A operates at a higher pressure than R-22, which allows for better heat absorption and transfer, facilitating improved cooling performance in HVAC systems. Furthermore, R-410A does not contain chlorine, making it less detrimental to the ozone layer, aligning with global efforts to phase out substances that contribute to ozone depletion. As a result, R-410A has become the standard for new air conditioning and heat pump systems, reflecting advancements in technology and regulatory changes promoting more sustainable practices in the refrigerant industry.