Under EPA Section 608, which activity requires EPA-certified technicians even when no refrigerant is expected to be released?
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A
Attaching manifold gauges to a system containing a regulated refrigerant
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B
Replacing a thermostat on a split-system air conditioner
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C
Changing a fan motor on a condenser unit with the refrigerant isolated
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D
Cleaning condenser coil fins with a pressure washer