🔧 General Experience & Background
1. Can you tell us about your experience as an AC technician?
Answer:
Yes, I have worked as an AC repair technician for over [X years]. I have experience in installing, maintaining, and repairing different types of air conditioning systems, including split systems, window units, and central AC. I also know how to handle refrigerants safely, perform regular servicing, and solve electrical and mechanical faults.
2. What types of air conditioners have you worked with?
Answer:
I have worked with residential split ACs, window ACs, cassette units, VRF/VRV systems, and central HVAC systems in both homes and commercial buildings. I understand their components and can troubleshoot them efficiently.
3. What tools do you usually carry for AC servicing?
Answer:
I usually carry manifold gauges, vacuum pump, leak detector, multimeter, refrigerant scale, coil cleaner, wrench set, pipe cutter, and safety gloves. These tools help me perform diagnostics and repair tasks safely and correctly.
4. How do you diagnose a malfunctioning AC?
Answer:
First, I check the power supply and thermostat. Then I inspect components like the compressor, capacitor, fan motor, and refrigerant level. I use a multimeter to test for continuity and voltage. Based on the symptoms and readings, I identify the root cause and plan the repair.
5. Can you explain the refrigeration cycle?
Answer:
Yes. The refrigeration cycle has four main components: the compressor, condenser, expansion valve, and evaporator. The refrigerant absorbs heat from the room in the evaporator, becomes gas, is compressed by the compressor, releases heat at the condenser, and returns to liquid. The cycle repeats to keep the space cool.
❄️ Technical Skills & Procedures
6. How do you check for refrigerant leaks?
Answer:
I use a leak detector or soap solution to check joints and connections. I look for bubbles, oil stains, or low pressure in the gauges. If a leak is found, I repair or replace the faulty part, vacuum the system, and recharge it.
7. What refrigerants have you worked with?
Answer:
I have worked with R-22, R-410A, and R-32 refrigerants. I understand their pressures, safety levels, and how to recover, recycle, and charge them properly.
8. How do you clean an AC system?
Answer:
I remove filters and wash them, clean the indoor coil with foam cleaner, vacuum the drain line, and wash the outdoor coil with water or pressure spray. I also check and clean the blower fan and ensure there are no obstructions in airflow.
9. How do you vacuum and recharge an AC system?
Answer:
After repairing leaks or replacing parts, I connect the vacuum pump to the service ports and vacuum the system for 20–30 minutes. I ensure there’s no moisture or air left. Then I close the valve and recharge the refrigerant according to the system’s specifications.
10. How do you handle electrical faults in AC systems?
Answer:
I use a multimeter to check for voltage, resistance, and continuity in components like capacitors, thermostats, PCB boards, relays, and motors. I isolate the faulty part, replace it if needed, and test the system again.
🧯 Safety & Work Discipline
11. What safety precautions do you follow while working?
Answer:
I always turn off the power before working. I wear gloves, safety glasses, and proper shoes. I handle refrigerants carefully to avoid gas exposure or burns. I also keep tools organized and follow lockout/tagout procedures if required.
12. How do you handle high-pressure refrigerants safely?
Answer:
I use proper gauges and hoses rated for the specific refrigerant type. I release pressure slowly and always wear protective gear. I also avoid direct contact with skin and store cylinders upright in a cool place.
13. What would you do if you found a gas leak indoors?
Answer:
I would switch off the AC and ventilate the room immediately. I would not ignite anything and use a leak detector to find the exact location. I would fix the leak and safely evacuate and recharge the system before restarting.
14. How do you dispose of old refrigerant?
Answer:
I collect it using a recovery machine into a recovery cylinder, label it properly, and send it to an authorized facility for recycling or safe disposal. I never release refrigerant into the air—it’s illegal and harmful to the environment.
15. Are you comfortable working at heights or in hot/cold conditions?
Answer:
Yes, I am used to working in rooftops, narrow spaces, and in all weather conditions. I always use safety harnesses and take proper hydration breaks when needed. I understand the physical demands of this job.
⚙️ Problem-Solving & Efficiency
16. What will you do if a customer says the AC isn’t cooling?
Answer:
I’ll first check the thermostat settings, then inspect the air filters, indoor and outdoor coils, refrigerant pressure, and electrical parts. I will identify if it’s a mechanical, refrigerant, or airflow issue and repair it accordingly.
17. What would you do if the compressor is not turning on?
Answer:
I would check for power supply, thermostat signals, capacitor condition, and overload protector. If the compressor has failed, I will explain the issue to the customer and recommend repair or replacement options.
18. How do you handle multiple service calls in a day?
Answer:
I organize my schedule based on location and urgency. I carry all essential tools and parts, diagnose quickly, and aim for first-time fix. I also update the service log after every job for tracking.
19. How do you deal with a customer who is not satisfied with your repair?
Answer:
I stay calm and listen to their concern. I review the work done, recheck the system, and try to solve the issue immediately. If needed, I report to my supervisor. My goal is always to leave the customer satisfied.
20. How do you keep records of your work?
Answer:
I note down the job details, work performed, parts used, and time spent in a logbook or digital app. This helps track service history and supports warranty claims.
🛠️ Work Attitude & Professionalism
21. What do you enjoy most about being an AC technician?
Answer:
I enjoy solving technical problems and helping customers feel comfortable in their homes or workplaces. Every system is different, and I like learning new technology and working with my hands.
22. How do you stay updated on new AC technologies?
Answer:
I watch technical videos, attend workshops, and read manuals or online forums. I also learn from experienced technicians and always stay open to new methods and tools.
23. Do you work better alone or in a team?
Answer:
I can work well independently and complete tasks responsibly. But I also enjoy working with a team when the job requires more hands, like in large installations or heavy unit repairs.
24. Are you available for emergency or weekend calls?
Answer:
Yes, I understand that AC systems can fail anytime, especially during peak seasons. I am ready to attend emergency or weekend calls if required.
25. Do you have a valid driving license?
Answer:
Yes, I have a valid driving license, and I am comfortable traveling to different work locations.
🔍 Scenario-Based
26. A customer says the AC smells bad. What do you do?
Answer:
I check the air filters, drainage line, and evaporator coil for mold or dirt. I clean them thoroughly and check for any stagnant water causing bad odor. I may suggest using antibacterial coil cleaner or deodorizer.
27. A new AC is installed but making loud noise — what do you check?
Answer:
I check for loose mounting, fan imbalance, refrigerant piping vibration, or foreign objects near the fan. I tighten screws, add vibration pads, and ensure no wires or parts are touching moving components.
28. The outdoor unit fan is not spinning — what’s the problem?
Answer:
It could be a faulty capacitor, motor, relay, or power supply issue. I will test each part with a multimeter and replace the damaged one. I’ll also check for blockage or overheating signs.
29. You are asked to install a new split AC. What steps will you follow?
Answer:
I inspect the room, mark indoor and outdoor unit locations, drill holes, fix the indoor bracket, connect the copper pipes and wires, install the outdoor unit, vacuum the lines, release the refrigerant, and test the system for performance and leakage.
30. Why should we hire you as our AC technician?
Answer:
Because I have the right technical knowledge, hands-on experience, and a strong work ethic. I take safety seriously, work with care, and always aim for customer satisfaction. I am also dependable, honest, and ready to join immediately.
