Exam (elaborations)
HVAC EPA Exam - Type 3 Certification-100% Solved
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AS OF NOVEMBER 14, 1994, the sale of ___ and ____ refrigerants is restricted to certified technicians - ANSWER-CFC and HCFC Because a low pressure system operates below atmospheric pressure (in a vacuum), leaks in the _______ or ________ will cause air and moisture to enter the system - ANSWER-g...
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