Which of the following repairs is always considered "major" under EPA regulations?

Prepare for the Type II EPA 608 Certification Exam. Study with comprehensive flashcards and multiple choice questions, each question featuring hints and detailed explanations. Ace your exam confidently!

The replacement of an evaporator coil is considered a "major" repair under EPA regulations because it involves a significant component of the refrigerant system. The evaporator coil is crucial for the cooling process, as it is where the refrigerant absorbs heat and is transformed from a liquid to a vapor state. This type of replacement typically requires a substantial amount of work, such as evacuating the refrigerant, replacing the coil, recharging the system, and ensuring proper sealing to prevent leaks.

In contrast, while replacing a compressor is also significant, it does not always carry the same classification as an evaporator coil replacement. Repairs like service valves and system flushing, while important, do not generally qualify as major repairs due to their less extensive impact on the refrigerant circuit and overall system functionality. This classification helps enforce standards for handling refrigerants and maintaining environmental safety as stipulated by the EPA.

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