HVAC - EPA Certification Practice Exam

What is classified as a "major repair" by the EPA?

1. Replacing the thermostat

2. Maintenance of ductwork

3. Removing any major component like compressor or evaporator

4. Cleaning the air filters

The correct answer is: Removing any major component like compressor or evaporator

A "major repair," as classified by the EPA, refers to significant actions taken on a refrigerant-containing appliance that involve the replacement or removal of major components. This includes components such as compressors, evaporators, and condensers which are integral to the refrigerant cycle and overall system functionality. Removing a major component often requires careful handling of refrigerants and adherence to environmental regulations designed to prevent leaks and ensure safety. In contrast, replacing the thermostat is generally considered a minor repair since it does not directly involve working on or altering the refrigerant circuit. Maintenance of ductwork is also categorized under routine maintenance rather than a major repair, as it does not typically involve significant changes or replacements to the system's primary components. Cleaning air filters is similarly a standard maintenance task, essential for system efficiency but not impacting the core refrigerant components or their operation. Thus, the designation of a repair as "major" aligns closely with interventions that pose greater implications for both system integrity and environmental protection.