A functioning air conditioner is a silent hero in our homes, especially during scorching summers. It provides comfort, cool air, and a respite from the sweltering heat.

However, when your AC starts acting up, it can lead to several discomforts and inconveniences. Fortunately, many common AC issues can be diagnosed and resolved with the proper knowledge and techniques.

Here, we’ll explore five common air conditioning issues homeowners often encounter and provide DIY troubleshooting steps. Remember, a well-maintained AC system keeps you comfortable and helps you save on energy bills. 

If you need professional AC repairs or an annual tune-up, call Precision Today Heating, Cooling & Plumbing, LLC at 630-283-8848 to request cooling services.

1. Insufficient Cooling

If your AC blows warm or mildly cool air instead of the refreshing cold air you’re used to, it indicates insufficient cooling. There are several possible causes, including:

• Dirty air filters: Clogged air filters can obstruct airflow and reduce cooling efficiency.
• Refrigerant leaks: Low refrigerant levels can compromise your system’s cooling capacity.
• Condenser unit issues: Damage or dirt on the condenser unit can hinder heat exchange.

DIY Troubleshooting Tips

• Regularly clean or replace air filters
• Check for visible refrigerant leaks
• Keep the condenser unit free from debris

2. Strange Noises

Unusual sounds from your AC unit can be alarming. Air conditioners can make several types of noises when they aren’t functioning correctly, each one with its own possible meaning:

• Rattling or buzzing: This is a sign of loose or damaged parts.
• Squealing or screeching: This often points to an issue with the belt or motor.
• Banging or clanging: This could mean there are loose components inside the unit.

DIY Troubleshooting Tips

• Tighten loose parts
• Lubricate moving components
• Replace worn-out belts or motors

3. Airflow Problems

Weak or uneven airflow can make your home uncomfortable quickly. Your unit may have poor airflow for several reasons, including:

• Blocked vents or registers: Obstructions can hinder air distribution.
• Clogged air ducts: Dust and debris can accumulate over time.
• Blower fan malfunction: A malfunctioning fan can’t push air effectively.

DIY Troubleshooting Tips

• Ensure vents are open and unblocked
• Clean your air ducts regularly
• Inspect the blower fan for damage

4. Short-Cycling

If your AC frequently turns on and off, it can strain the system and reduce its efficiency. Frequent on/off cycling can be caused by many different things, including:

• Thermostat issues: Incorrect thermostat settings or faulty sensors can cause short-cycling.
• Refrigerant problems: Low refrigerant levels or leaks can cause your system to struggle to turn on or off.
• Evaporator or condenser coil dirtiness: Dirty coils can disrupt heat exchange.

DIY Troubleshooting Tips

• Adjust your thermostat settings
• Check for refrigerant leaks
• Keep condenser coils clean

5. Unpleasant Odors

Strange odors from your air conditioner can be unpleasant. Different types of smells can indicate various issues within your AC system, including:

• Musty or moldy odor: There could be mold or mildew growth inside the unit.
• Burning or electrical smell: Overheating components can produce a burning smell.
• Rotten egg-like smell: Gas leaks, which are considered an emergency, often give off the smell of rotten eggs.

DIY Troubleshooting Tips

• Clean or replace air filters
• Ensure proper drainage
• Address gas leaks immediately by calling a professional

When To Contact a Professional for Repairs

In some cases, DIY troubleshooting won’t resolve your air conditioning issues. It’s best to trust a professional for AC repair when:

• Issues persist despite troubleshooting
• There’s severe mold growth in your system
• You suspect a gas leak

Schedule AC Repair With Precision Today

If you have urgent cooling system failures, contact Precision Today for same-day air conditioning repair. With over 97 years of service experience, our team is committed to providing fast, reliable AC repairs you can trust to regain reliable cooling performance in no time. 

Call 630-283-8848 to request same-day air conditioning repair.