It is the hottest day of the year and your air conditioner is running but your home is not getting any cooler. Before you panic, there are several common causes that you can check yourself — and some that require a professional. Here is a step-by-step troubleshooting guide for GTA homeowners.
Check These First
- Thermostat settings: Make sure it is set to COOL mode and the temperature is set below the current room temperature
- Air filter: A clogged filter restricts airflow and can cause the system to freeze up. Replace it if it is dirty.
- Circuit breaker: Check that the breaker for your AC has not tripped. Reset it if needed.
- Outdoor unit: Ensure the outdoor condenser is not blocked by debris, leaves, or overgrown plants. Clear at least 2 feet of space around it.
Common Causes That Need Professional Repair
If the basics check out and your AC still is not cooling, the issue likely requires a licensed technician. Common professional-level causes include low refrigerant due to a leak, a failed compressor, a faulty expansion valve, a frozen evaporator coil, or a malfunctioning blower motor.
The Frozen Coil Problem
A frozen evaporator coil is one of the most common AC issues in the GTA. It is usually caused by restricted airflow (dirty filter), low refrigerant, or a failing blower fan. If you see ice on the indoor coil or refrigerant lines, turn the system off, switch the fan to ON to help thaw it, and call a technician.
When to Call for Emergency AC Repair
Call for immediate service if you notice a burning smell, hear grinding or screeching noises, see water leaking around the unit, or if the system will not turn on at all. These symptoms can indicate serious issues that could worsen if left unaddressed.
If your air conditioner is not cooling your GTA home properly, ZK Mechanical can help. Our licensed technicians diagnose and repair all AC brands and models with same-day service availability. Contact us to schedule a repair.