What refrigerant is described in the scenario?

Prepare for the HVAC EPA Type I Test. Study with flashcards and multiple choice questions, each with hints and explanations. Get ready to excel in your exam!

Multiple Choice

What refrigerant is described in the scenario?

In modern residential HVAC, identifying refrigerants often comes down to ozone impact, typical applications, and lubrication needs. The scenario points to a refrigerant used in new homes as a replacement for an older ozone-depleting option, with chlorine-free chemistry and higher operating pressures. That description fits R-410A, a blend of R-32 and R-125. It contains no chlorine, so it doesn’t deplete the ozone layer, and it runs at higher pressures than older refrigerants like R-22. It also uses polyol ester oils rather than mineral oil. The other choices don’t fit: R-22 contains chlorine and is being phased out for this reason; R-404A is used mainly in commercial low-temperature applications; ammonia is toxic and used in industrial settings.

In modern residential HVAC, identifying refrigerants often comes down to ozone impact, typical applications, and lubrication needs. The scenario points to a refrigerant used in new homes as a replacement for an older ozone-depleting option, with chlorine-free chemistry and higher operating pressures. That description fits R-410A, a blend of R-32 and R-125. It contains no chlorine, so it doesn’t deplete the ozone layer, and it runs at higher pressures than older refrigerants like R-22. It also uses polyol ester oils rather than mineral oil. The other choices don’t fit: R-22 contains chlorine and is being phased out for this reason; R-404A is used mainly in commercial low-temperature applications; ammonia is toxic and used in industrial settings.

More practice questions