Type II — High-PressureQuestion 158 of 240
A technician recovers refrigerant from a heat pump in heating mode and is unsure which service port to use. On a heat pump, why must the technician understand the reversing valve position when recovering or charging?
a.The reversing valve makes recovery illegal
b.The reversing valve swaps which coil is the condenser and which is the evaporator
c.The reversing valve changes the refrigerant into a different chemical
d.Heat pumps cannot be recovered while installed
Explanation
A heat pump's reversing valve switches the roles of the indoor and outdoor coils between heating and cooling, so which line is the high side and which is the low side changes with the mode. Understanding this ensures the technician connects to the correct ports and interprets pressures correctly. The valve does not change the refrigerant itself or prohibit recovery.
This topic, taught in full in the EPA Section 608 Certification guide. EPA 608 Universal Study Guide (2026) — Core + Type I/II/III, with the 2027 A2L update — PDF + EPUB, $14.99 · 14-day refund →
Practice all 240 questions free — no signup required.
Own the complete EPA Section 608 Certification guide — PDF + EPUB, $14.99 →
Related questions on this topic
- A technician performs a standing pressure (leak) test on a repaired Type II system using dry nitrogen. Over several hours the pressure holds steady with no drop. What does this indicate?
- A technician is selecting a vacuum pump to properly dehydrate a Type II R-410A system. Why is a dedicated vacuum pump used instead of the recovery machine to pull the final vacuum?
- A technician retrofitting an R-22 system to an HFC replacement changes the oil and refrigerant. Which additional component is most commonly replaced during the retrofit?
- A technician is unsure which required vacuum applies to a high-pressure appliance during recovery. Which two factors determine the required evacuation level?
- A commercial refrigeration appliance holds more than 50 pounds of an ozone-depleting refrigerant and has developed a leak. Under the Section 608 leak-repair requirements, what must the owner or operator generally do?
- After evacuating a Type II R-410A system to a deep vacuum, a technician is ready to charge. Which practice supports an accurate final charge?
Last reviewed: · editorial process
PrepPass team · Verified against EPA Section 608 Technician Certification Exam · How we review