10 Air Conditioning Problems Every Homeowner Should Know

Do you know what to do if your AC starts malfunctioning?

AC systems keep your home comfortable and add value to your property, but they have unique problems.

Here is a list of the ten most common AC problems and how to fix them at home. You can solve many air conditioning issues at home without needing to phone a technician, but you may need to call a professional in worse cases.

To schedule service with CMC Service Experts, fill out our contact form or give us a call at (919) 246-4799.

1. Thermostat Not Working

Your thermostat is the main form of communication that you hold with your HVAC system. If the thermostat is malfunctioning, you will never be able to set your home to the correct temperature.

How to solve:

It’s possible that a faulty thermostat also has a simple fix like replacing the batteries. You should consider switching to a newer model if the thermostat is old or damaged beyond repair. A professional may need to come in and check your electrical system’s faulty wiring to solve the

2. Poor Air Flow

In the most extreme temperatures, it’s easy to tell when your AC system has an airflow issue. If the airflow is weak, it may be due to dirty filters.

The most common culprit of weak airflow is a dirty air filter believe it or not. When debris build-up and become trapped, they block air from flowing freely into the room. Dirty air filters can also cause drafts and temperature imbalances in your home.

How to solve:

If it’s been a while since you last changed your air filter, consider replacing it to solve any HVAC issues.

If cleaning the air filters doesn’t work, it’s time to call an HVAC professional. Damaged components and other HVAC malfunctions may cause weak airflow.

3. Strange Noises

It’s common for AC units to make quiet noises as they operate during a cooling cycle. There’s something wrong if you hear loud hissing, buzzing, or explosions. If you ignore noises, the damage to your HVAC system and home could be disastrous.

A piece of the hardware is most likely loose if you hear rattling. Whistling sounds point toward airflow problems. Clicking noises usually mean an electrical issue.

How to solve:

Call a reliable technician from CMC to diagnose the issue. Attempting to solve the problem yourself can lead to even more damage to the AC system, regardless if you have some HVAC knowledge.

4. Strange Odors

If your HVAC system makes an unpleasant odor when turning on the AC, it’s most likely a warning sign of mold caused by too much moisture. Unclean air filters and pests trapped in ducts can also cause foul odors. An electrical issue can be extremely dangerous if there is a burning smell.

How to solve:

Odors are not something to be ignored. You also risk hazardous exposure to contaminants if you try to investigate odors yourself. Bacteria and mold can harm yourself, your family, and your property. Call an expert HVAC technician to investigate the odor and clean or repair the area.

5. AC Fails to Start

Perhaps the most confounding problem is when your AC system won’t turn on despite numerous attempts. This failure to start up can be due to a loss of power or a system failure.

How to solve:

Ensure that your home has power and the AC unit is connected to it. You may have experienced a power outage and never even realized it.

Fuses or faulty wiring can cause malfunctions while an AC system attempts to begin the cooling cycle. If there are any electrical issues, our technicians can repair them.

6. AC Blows Hot Air

The last thing you want during a hot summer is to feel your AC system blowing out hot air. If the temperature in your house refuses to drop, your thermostat could be the culprit, or the coils have become frozen due to dirty air filters.

How to solve:

Check your thermostat to ensure the settings are correctly adjusted to cool instead of warm air. Also, clean out the air filters to prevent frozen coils. Finally, call a technician to investigate.

7. Short Cycling

A cooling cycle begins when the fan on your AC blows and ends when the home reaches the target temperature, and the AC system turns off.

Short cycling is when air only blows for a few minutes and quits by itself. Most of the time, these short cycles lead to insufficient home cooling.

Short cycling can happen due to issues like dirty filters or clogged ducts. It can also be due to a thermostat or electrical malfunction.

How to solve:

Check to ensure that your air filters are clean and your thermostat is not malfunctioning. If not, then call an electrician to diagnose the problem for you.

8. Leaky Components

Your AC system should never be leaking water. If you’ve found a puddle near your HVAC system, you have a water leak somewhere in the system. The leak could be due to a buildup of moisture and insufficient refrigerant levels.

How to solve:

Most of the time, small water leaks are not significant issues, and having a  technician can solve the problem in a single day. Once he locates the leak, all he has to do is seal it and restore refrigerant levels.

9. Electrical Issues

All AC system usage wears down on your AC system over time. AC systems require an electrical connection to start, and your AC system is pretty much out of commission when electrical malfunctions occur. If you have an issue with electrical connections, it can prevent the motor and compressor from
turning on.

How to Solve:

Monitor the usage of your AC unit and keep from frequently adjusting the temperature to minimize wear and tear on electrical components.

If you suspect electrical issues, do not try to repair them yourself!  Without the proper training and equipment, you could put yourself and your AC system in danger. We recommend calling an electrician from CMC when dealing with any electrical issues.

Immediately turn off your power to prevent electrical fires or damage as soon as you notice electrical malfunctions.

10. Failure to Drain

The HVAC drain pipeline can become clogged with debris, vegetation, and dirt. All kinds of bacteria and mold can grow when water refuses to drain properly for a while. Bacteria and other contaminants cause gasses and foul odors to your home.

How to Solve:

Ensure to request regular maintenance for your drain line. Have it routinely cleaned and inspected by an expert so it doesn’t become clogged.  AC systems that do not drain properly will eventually need to be repaired or replaced.

Need AC Maintenance, Repair, or Replacement in Clayton?

Most commonly, issues arise during a hot summer when homeowners use their AC unit the most. This list of common problems and solutions can prepare you for anything your HVAC system throws your way. Talk to a professional about your HVAC issues to decide whether or not you’ll be able to solve them
yourself or if you’ll need expert help.

Keep your AC unit in the best shape for the longest time by looking into annual routine maintenance. CMC Expert Services offers the highest quality HVAC maintenance in Clayton. Contact CMC, and we’ll keep your AC in its healthiest shape for the summer.

Fill out our contact form to schedule with us or give us a call at (919) 246-4799.