Common AC Problems and Troubleshooting Tips

We've all been there. It's a scorching summer day, and your AC decides to act up. Thankfully, understanding some common problems and their solutions can help. So, before you dial up your technician, let's dive into the basics of Common AC problems.

The Importance of Regular AC Maintenance

Think of your AC unit like a car; it needs periodic check-ups to run smoothly. Regular maintenance can prevent significant breakdowns, ensure efficient operation, and prolong your AC's life.

Recognizing Signs of AC Issues

Is your AC making a funny noise? Or it's not cooling as effectively. Recognizing these early signs can save you from a sweltering summer day without AC.

Common AC Problems and Their Causes:

1. Faulty Wiring

Shoddy or uncertified wiring can hinder your AC's operation and even pose a fire threat.

2. Frozen Coil

This usually results from issues with airflow, such as obstructions caused by dirty air filters or blocked return air ducts.

3. Low Refrigerant

Also known as Freon, low levels usually indicate a leak or problem with the refrigerant system.

4. Outside Fan Not Working

This fan transfers the heat from your home to the outside. Proper heat transfer is only achieved if it functions properly, leading to potential compressor problems.

5. Outside Unit Not Functional

This typically indicates a lack of power, a contactor problem, or a faulty thermostat.

6. The Coil is Frozen

A frozen coil often indicates an issue with airflow, such as restrictions caused by filthy air filters or blocked return air ducts.

7. The Unit is Constantly Running

Lack of adequate insulation, leaks in the ductwork, or a too-large AC unit can cause this.

Quick Troubleshooting Tips:

- Reset Your Circuit Breaker

Often, your AC might not be working because it tripped a breaker. Simple flipping might solve the issue.

- Check Your Thermostat

Ensure it's set to "cool" and the temperature is lower than your room's current temperature. And always check for dead batteries!

- Clean or Replace Your Filter

A clogged filter can impede airflow and cause several issues. Regularly checking and replacing can solve many problems.

- Ensure Power is On

Check if the AC unit's switch is on, usually located near the outdoor unit.

- Check for Ice

If you see ice on your unit, switch it off and call a technician.

- Clean the Outdoor Unit

Over time, leaves, dirt, and debris can accumulate, blocking efficient airflow. Regularly cleaning it can enhance performance.


Some AC issues can be resolved with some DIY spirit and basic knowledge. However, always rely on a professional AC technician for more significant problems or when in doubt. Regular maintenance can also go a long way in preventing many common AC problems. Stay cool!

Frequently Asked Question

How often should I change my AC filters?

Ideally, every 1-3 months, depending on use and air quality.

Is a noisy AC a cause for concern?

A professional should check for usual, sudden, loud, or unusual noises.

How frequently should my AC be serviced?

A general rule of thumb is at least once a year.

Why is my AC blowing warm air?

This could be due to low refrigerant levels, a dirty filter, or thermostat settings.

What should I do if my AC unit freezes up?

Please turn it off immediately and call a professional.

Read our more blogs

Best Air Conditioner Repair Guide in Seminole, Fl

Top Signs That Indicate Your AC Unit Needs Repair

Factors That Influence the Cost of a Typical AC Repair Service

How to Find a Certified AC Repair Technician

Emergency Air Conditioner Repair

Share Article

Momentum AC Services Inc is a family-owned HVAC company in the Tampa area. We offer fast installation of all major brands of air conditioning units with no hidden costs or surprises. Momentum AC will work hard to make sure your new unit is installed on time and that it runs smoothly for years to come. 

Recent Posts