Service & TroubleshootingQuestion 88 of 110
Recommended routine maintenance to preserve airflow and efficiency includes what?
a.Adding refrigerant every visit
b.Replacing the compressor annually
c.Regularly replacing or cleaning air filters and cleaning coils
d.Removing the condensate trap
Explanation
Routine maintenance such as changing filters, cleaning evaporator and condenser coils, and clearing condensate drains preserves airflow, capacity, and efficiency. Adding refrigerant should only follow a diagnosed leak and proper charging. Regular service prevents many common failures.
Practice all 110 questions free — no signup required.
Related questions on this topic
- A dirty flame sensor on a modern furnace most commonly causes what symptom?
- When measuring the actual airflow of an installed system, which measurement helps diagnose a restrictive duct system?
- A capacitor that reads well below its rated microfarad value should be treated how?
- A technician measuring compressor amp draw far above the rated load amps (RLA) should suspect what?
- The most likely cause of no cooling when the thermostat calls but the outdoor unit is completely silent is what?
- An ECM (electronically commutated motor) blower offers what advantage over a standard PSC motor?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB C-20 Warm-Air HVAC Trade Exam · How we review