Use these questions when your technician is performing a seasonal tune-up. They show that you understand the value of preventative maintenance and want to protect your equipment.
1. The Capacitor Check
Ask: "What are the actual microfarad readings on my capacitors versus their rating?"
Why: Don't settle for "It's fine." If a 45 µF capacitor reads 40 µF, it’s out of range. Ask for the specific numbers.
Ask: "Is the capacitor showing any signs of 'bulging' or oil leaks?"
Why: Even if the numbers are okay, physical deformation (a domed top) is a sign the internal pressure safety is about to pop.
2. The Motor Stress Test
Ask: "What is the 'Amp Draw' of the compressor and fan motor right now?"
Why: Every motor has a "Rated Load Amps" (RLA) on its sticker. If your motor is pulling amps close to or above that number, it’s working too hard—often due to a weak capacitor or dirty coils.
Ask: "How does the current Amp Draw compare to the manufacturer's rating?"
Why: If the rating is 1.5 Amps but the motor is pulling 1.8 Amps, that motor is overheating and costing you money every minute it runs.
3. The "Cleanliness" Factor
Ask: "Did you check the condenser coils for debris? Do they need a chemical wash?"
Why: Dirty coils trap heat. This raises the pressure in the system, which forces the capacitor and motor to work harder, accelerating their failure.
4. The "Hard Start" Kit (Optional but Good)
Ask: "Would my system benefit from a 'Hard Start Kit'?"
Why: As compressors age, they get tighter and harder to start. A hard start kit is an extra capacitor that gives the compressor a "boost" at startup, reducing the strain on the main run capacitor and the motor windings.
🚩 Visual Red Flags (Watch for these yourself)
If you look at your outdoor unit and see these signs, call a pro before it stops working:
- The "Hum but No Spin": You hear the unit trying to turn on (a loud hum), but the fan isn't spinning. Turn it off immediately! This is a classic dead capacitor symptom.
- Clicking Sounds: The unit tries to start, clicks, stops, waits a minute, and tries again.
- Oil Spots: Dark, oily stains on the floor of the unit or on the electrical components.