Is your air conditioner running but your house still feels hot and stuffy? Few things are more frustrating on a hot summer day than an AC that’s not cooling properly.
There are several reasons why this might be happening — some you can fix yourself, and others that require professional HVAC help. Let’s break down the common causes of a malfunctioning air conditioner and what you can do about them.
🌬️ 1. Dirty Air Filter
The first thing to check is your AC filter. A clogged or dirty filter restricts airflow, preventing cool air from circulating through your home. This is one of the most common (and easily fixable) problems.
Try replacing your air filter and see if cooling improves. Filters should be changed every 1–3 months during peak usage.
❄️ 2. Low Refrigerant Levels
Your AC system relies on refrigerant to absorb and release heat. If levels are low due to a leak, your unit won’t be able to cool your home effectively — or at all.
This is not a DIY fix. You’ll need a licensed HVAC technician from Pro Service Mechanical to inspect the system, repair any leaks, and recharge the refrigerant.
🔧 3. Frozen Evaporator Coils
If your system is running constantly but not cooling, your evaporator coils may be frozen. This typically results from restricted airflow (often due to a dirty filter) or low refrigerant.
Turn off your AC and let the coils thaw. If the problem keeps coming back, it’s time for a professional diagnosis.
🌡️ 4. Thermostat Issues
Sometimes, the problem lies with your thermostat. If it’s not reading the correct temperature or isn’t communicating properly with the AC unit, cooling will suffer.
Try replacing the batteries or checking your thermostat settings. If it’s still not working, you may need a replacement or recalibration.
🌳 5. Dirty or Blocked Outdoor Unit
Your outdoor AC unit needs room to breathe. If it’s covered in dirt, leaves, or debris, it can’t release heat effectively — meaning your home won’t cool down properly.
Clean the area around the unit and gently rinse the condenser coils with a hose. Be careful not to bend the fins or damage the components.
⚙️ 6. Leaky Ductwork
If your ductwork has leaks or gaps, cool air could be escaping into your attic or walls — never reaching your living spaces. This is a common issue in older homes.
An HVAC technician can inspect and seal your ductwork to restore proper airflow and efficiency.
🔍 How We Can Help
At Pro Service Mechanical, we specialize in diagnosing and fixing all types of air conditioning issues. Whether it’s a dirty filter, a refrigerant leak, or a thermostat problem, we’ll find the cause and restore cool comfort to your home quickly.
- AC tune-ups and inspections
- Refrigerant recharging and leak repairs
- Thermostat installation and calibration
- Ductwork repair and sealing
✅ Final Thoughts
If your AC isn’t cooling properly, don’t sweat it. From simple fixes to major repairs, the expert team at Pro Service Mechanical has you covered. We’re proud to serve homeowners across Saskatoon with fast, friendly, and affordable HVAC services.
Schedule your AC service today and take back control of your indoor comfort.
