Call Today for Service

Understanding Common AC Problems and Solutions

Keep Your AC Running Smoothly: Common Issues and Essential Maintenance Tips


At Mor Air Inc, we understand that air conditioning issues in sunny North Hollywood, CA, can be frustrating. But don’t sweat it—we’ve got your back. Today, we want to share some common AC issues and what you can do to keep cool and comfortable.

Common Residential AC Problems

1. Thermostat Issues

Let’s start with your trusty thermostat. It tells your AC when to kick on and for how long. If it’s acting up, your cooling might go haywire.

How to Check and Fix Thermostat Problems

Before calling us, try these quick fixes:

  • Change the Batteries – If the screen is blank, it might just need new batteries.
  • Power Check – Make sure the thermostat has power (especially for smart models).
  • Mode Setting – Ensure it’s set to “Cooling.”
  • Temperature Setting – Make sure the set temperature is lower than the room temperature.

2. Dirty Air Filters

You might not believe it, but dirty air filters can mess up your AC’s efficiency big time.

The Impact of Air Filters on AC Performance

Dirty filters mean poor airflow, bad indoor air quality, and higher power bills. Plus, they can make the coil freeze up.

When to Change Air Filters

If you can’t remember when you last changed your filter, it’s probably time. As a rule of thumb:

  • Flat Filters – Change every month.
  • Pleated Filters – Change every three months.

3. Frozen Condenser Coils

Even in the summer, your AC coils can freeze up.

Causes of Coil Freezing

This can happen due to:

  • Dirty Coils – Skip annual maintenance, and they’ll get dirty.
  • Dirty Filters – Reduces airflow.
  • Clogged Drain Line – Moisture buildup can cause freezing.
  • Refrigerant Leaks – Lowers cooling power.

Steps to Thaw Frozen Coils

If your coils freeze, turn off the AC and let the ice melt. Switch to “fan only” mode to speed up the process.

4. Refrigerant Leaks

Low refrigerant means less cooling and possibly a sweet-smelling leak.

Signs of Refrigerant Leaks

Look out for:

  • Insufficient Cold Air
  • Humid Home
  • Long Cooling Cycles
  • Ice on Evaporator Coils
  • Dripping or Hissing Noises
  • Sweet Smell Near AC

5. Water Leaks

Your AC’s drain line can clog up, causing water to leak.

Common Causes of Water Leaks

Mold buildup or a clogged drain line are typical culprits.

Immediate Actions to Take

Turn off your AC to prevent damage, and give us a call!

6. Tripped Circuit Breaker

If your AC keeps tripping the breaker, it might be because of:

  • Dirty Air Filter – Blocks airflow.
  • Low Refrigerant – Makes the AC run hot.
  • Dirty Condenser Coils – Restricts airflow.
  • Electrical Issues – Damaged or loose connections.
  • Failed Blower Motor – Stops air movement.
  • Compressor Issues – Drawing too much power.

Troubleshooting Electrical Issues

First, check the air filter. If it’s dirty, replace it. Otherwise, you might need professional help.

7. Short Cycling

Short cycling happens when the AC turns off before the house is cool.

Understanding and Addressing Short Cycling

If your AC is short cycling, it might be overheating. Monitor how long the air is on before shutting off. Typically, the AC should run for 15-20 minutes and stay off for about the same time. If it’s short cycling, it’s time for a checkup.

Common Commercial AC Problems

  • Zero Maintenance

Skipping maintenance can lead to clogged filters, reduced airflow, and  breakdowns.

Consequences of Neglecting AC Maintenance

Without maintenance, your AC works harder, consumes more power, and eventually breaks down.

Recommended Maintenance Schedule

In dusty areas, clean filters and check the system more frequently to maintain performance.

  • Refrigerant Leaks in Commercial Systems

Leaking refrigerant reduces cooling efficiency and can damage the compressor.

Preventing and Managing Refrigerant Leaks

Regular inspections and proper refrigerant levels are key.

  • Electrical Issues and Component Failure

Faulty wiring, worn capacitors, and tripped breakers are common in commercial ACs.

Identifying and Fixing Electrical Problems

Regular electrical checks help catch and fix issues early.

  • Dirty Coils

Dirty coils restrict airflow and make the AC work harder.

Importance of Clean Coils for Efficient Operation

Keep coils clean to maintain cooling performance and efficiency.

  • Overloading the System

Running an AC beyond its capacity can cause premature failure.

Ensuring Proper AC Sizing and Usage

Make sure your AC is correctly sized and avoid overloading.

  • Compressor Issues

The compressor is the heart of the AC. If it fails, the system is toast.

Preventing Compressor Failures through Maintenance

Regular maintenance prevents compressor issues and extends the system’s life.

Preventive Measures and Maintenance Tips

Residential AC Maintenance Tips

  • Change air filters regularly.
  • Keep coils clean.
  • Check refrigerant levels.
  • Inspect for leaks.

Commercial AC Maintenance Strategies

  • Schedule routine inspections.
  • Clean filters and coils.
  • Monitor electrical components.
  • Avoid overloading.


Regular maintenance is key to a happy AC system. For expert help, contact Mor Air Inc. We’re here to keep you cool and comfortable! Give us a call or fill out our contact form to schedule an appointment.

Leave a Comment

Your email address will not be published. Required fields are marked *

Call Now ButtonCall Us Now