Why Won’t My AC Run?

As the scorching summer falls upon us, a malfunctioning AC system can quickly turn your home into an uncomfortable and unbearable space. If and when you find yourself in a similar situation, it’s crucial to identify the underlying cause preventing your AC from running and take the necessary steps to address the issue. But don’t panic. Canadian Heating and Air Conditioning is here to relieve you of the perils of a malfunctioning AC unit with our comprehensive AC services in Hamilton, ON, and all nearby areas. 

In this blog post, we’ll explore potential reasons why your AC unit won’t run and provide various troubleshooting tips to help you get your system back up and running efficiently.

Power Supply Issues

One of the most common reasons for an AC unit not running is a power supply problem. Check if the unit is receiving power by ensuring it is plugged in correctly and the circuit breaker hasn’t tripped. If you find a tripped breaker, reset it and monitor the AC unit to see if it starts running.

Thermostat Misconfiguration

Incorrect thermostat settings can prevent your AC unit from turning on. It’s essential to set your thermostat to “cool” and set the desired temperature below the current room temperature. If you own a programmable thermostat, verify that the programmed settings are correct and consider replacing the batteries if necessary.

Dirty Air Filters

Clogged and dirty air filters can obstruct airflow and cause your AC system to shut down. Inspect the air filters & clean or replace them as needed. Regularly changing your air filters improves air quality and enhances your AC system’s efficiency.

Condensate Drain Line Issues

A clogged condensate drain line can trigger a safety switch, causing the AC unit to shut down. Inspect the drain line for blockages and remove any debris or buildup. If the line is severely clogged, consult Canadian Heating and Air Conditioning for a detailed AC repair in Hamilton, ONto avoid potential water damage.

Tripped High-Pressure Switch

The high-pressure switch protects your AC system from damage caused by excessive pressure. If it’s tripped, the system will shut down. This issue can result from a dirty condenser coil or a malfunctioning fan motor. Inspect and clean the condenser coil and check the fan motor for proper functioning. If the problem persists, seek professional assistance.

Faulty Capacitor

A faulty capacitor can hinder the motor’s ability to start, preventing your AC unit from running. Check for bulging or leaking capacitors and replace them if necessary. However, capacitor replacement requires technical expertise, so it’s best to consult a professional.

Compressor Failure

A failed compressor is a significant issue that may even require a system replacement. If your AC unit doesn’t start and you hear strange noises or notice warm air blowing from the vents, the compressor may have failed. Contact our professional HVAC technician to evaluate the situation, recommend the best action moving forward, and perform an effective and efficient AC replacement in Burlington, ON, if necessary.

Be Vigilant So You Won’t Have To Suffer 

Understanding the potential reasons why your AC unit won’t run and implementing troubleshooting steps can often resolve minor issues. However, for complex repairs and other services, including AC replacement needs in Burlington, and Hamilton, ON, it’s advisable to seek professional assistance from Canadian Heating and Air Conditioning. Routine maintenance and upkeep are crucial to keeping your AC system in optimal condition and avoiding unexpected breakdowns. 

Don’t let a malfunctioning AC ruin your summer—reach out to us now and experience the difference in professional HVAC service.