5 Common Air Conditioning Issues and How to Fix Them
🧊 Introduction
When the summer heat hits Quebec, your air conditioner becomes your best friend — until it stops working. Here are 5 common air conditioning problems and simple ways to troubleshoot them before calling a technician.
❓ 1. Why is my AC blowing warm air?
Possible causes:
- Dirty or clogged air filter
- Thermostat set to “fan” instead of “cool”
- Low refrigerant level (potential leak)
- Faulty compressor
What you can do:
- Check and replace the air filter
- Confirm your thermostat is in “cool” mode
- If it still blows warm, call a technician to check refrigerant and system pressure
❓ 2. Why is my AC unit leaking water inside the house?
Common reasons:
- Clogged condensate drain
- Frozen evaporator coil
- Improper drain pan installation
Solution:
- Turn off the system to prevent further damage
- Contact a professional to clean the drain and inspect for coil or refrigerant issues
❓ 3. My heat pump or AC runs constantly — is that normal?
If it’s extremely hot outside, constant operation might be normal. However, other causes include:
- System too small for your space
- Thermostat malfunction
- Leaky ducts or poor insulation
Recommendation:
Have your system evaluated to ensure it’s properly sized and your home is well-sealed.
❓ 4. Why is my AC making strange noises?
Rattling, buzzing, or clicking could indicate:
- Loose parts
- Motor or fan issues
- Debris inside the outdoor unit
What to do:
- Turn off the unit
- Have it inspected and serviced before it causes further damage
❓ 5. My AC cycles on and off too frequently — what’s wrong?
This might be due to:
- Oversized unit
- Dirty condenser or evaporator coils
- Malfunctioning thermostat
Action plan:
- Clean filters and coils
- Let a technician recalibrate or relocate the thermostat if needed
🧠 Pro Tip from Applewood Technicians:
“Many AC problems begin with airflow — change your filters regularly and schedule seasonal tune-ups to stay ahead of issues.”
📞 Need AC service in Montreal or South Shore?
Climatisation Applewood Quebec Inc. is here to help.
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