Practice test

HVAC Practice Exam 16

Expert HVAC practice exam 16: Universal certification scenarios, EEV and TXV charging, flash gas, and sealed-combustion furnace diagnostics, with explanations.

Free preview

These questions are for study practice only and are not official exam questions.

Question 1

1

A Universal-certified technician recovers R-22 from a rooftop unit, then needs to recover R-123 from a chiller. The Universal card:

Question 2

2

Before disposing of a small appliance such as a window AC, the disposer (e.g., scrap yard) must verify:

Question 3

3

An evacuation that will not break below 5,000 microns despite a good pump usually means:

Enable JavaScript for the interactive step-by-step quiz with instant scoring and explanations.