Heating & A/C (A7)Question 84 of 120
Technician A says overcharging an A/C system improves cooling. Technician B says overcharging raises system pressures and can reduce cooling and damage the compressor. Who is correct?
a.Technician A only
b.Technician B only
c.Both A and B
d.Neither A nor B
Explanation
Overcharging raises high-side pressure, reduces cooling efficiency, and can damage the compressor with liquid slugging. The correct charge, measured by weight, is critical. Technician A is wrong; more refrigerant is not better.
Practice all 120 questions free — no signup required.
Related questions on this topic
- In an automotive A/C system, the compressor's job is to:
- The component that changes high-pressure refrigerant vapor into a liquid by removing heat is the:
- The evaporator in the passenger compartment:
- The expansion valve or orifice tube controls:
- The desiccant in a receiver-drier or accumulator is used to:
- Technician A says a low refrigerant charge typically shows low readings on both gauges with poor cooling. Technician B says the leak should be repaired before recharging to the correct weight. Who is correct?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against ASE Automobile Certification Series (A1–A8) · How we review