Properly functioning air conditioning is vital for year-round comfort, especially during the summer months. Just like many mechanical systems, HVAC units can develop problems over time that diminish their efficiency and lead to breakdowns when you least expect it.

While it’s crucial to call a professional for air conditioning issues, it is advised to take proactive steps to mitigate problems before they even exist. Learning about common AC issues and brushing up on some troubleshooting tips can prevent bad situations. Here’s what you need to know:

AC Not Turning On

There are multiple reasons why an air conditioner may not start. One of the most common issues can be related to thermostats. Understanding the thermostat settings, such as dead cells or incorrect configurations, is important as it can prevent your unit from receiving signals to start. Power supply issues, such as a tripped circuit breaker or a blown fuse, can also prevent the unit from starting.

AC Not Blowing Cold Air

If your system is not cooling your home, check the return filter. A dirty filter restricts air flow, hindering the system’s ability to keep up. Your system could also be lacking the proper level of refrigerant. A loss of freon typically indicates a larger problem, and you should call Trusted.

Unusual Noises

Strange noises from the unit, such as hissing, clicking, and screeching, indicate that there may be an underlying mechanical issue. For example, a “hissing sound” could indicate a dangerous refrigerant leak. In addition, a clicking noise could insinuate trouble with electrical components such as capacitors or relays.

Frozen Evaporator Coil

Have you ever heard someone say that their unit is frozen?

As we have discussed, a lot of stress is placed on your system during the summer months. When the evaporator coil becomes too cold, it freezes. There are multiple reasons as to why this could potentially happen.

• • Low Refrigerant
    • When your system is experiencing a low refrigerant level, it causes the system’s pressure to be low as well. However, even though the pressure is low, the refrigerant is still expanding at the same rate. In this state of low pressure, when the refrigerant leaks, the system begins absorbing way more heat than normal, which freezes the refrigerant lines and coil.
  • Dirty Return Filters or Blocked Supply Vents:
    • The most common cause of a “not cooling” service call is a dirty air filter or a blocked supply vent. Be proactive, save yourself time and money, and set a reminder to change your filters every 30 days and always keep your supply vents clean and clear of obstructions. Doing this on a regular basis prevents the excessive buildup of dirt, allergens, pet dander, dust, and other particles, which all combine to restrict your air flow. This restriction forces your system to work harder than needed. When your system is overloaded, it freezes.
  • Clogged Drain Lines
    • A system’s condensate drain line is responsible for removing water (condensation). By draining this water, you do not have to worry about it backflowing and causing damage to your system or your home! However, without regular maintenance, this drain line is EASILY clogged by debris, causing a backup of moisture. Not only will your unit fail, but you can experience even more costly repairs. Water must have somewhere to go, whether it is in your wall, ceiling, etc, water leaks cause extensive damage.
  • Incorrect Thermostat Settings
    • Make certain that your thermostat’s fan setting is set to “auto” and not continuously running. Always change the set temperature in small increments, as to not, in layman’s terms, shock your system.

Water Leaking Outside

Excessive water leaking often signals underlying issues with the condensate drain system and additional components. This problem can manifest due to a clogged drain line, as we just discussed at length above. Improper installation of the AC unit can also contribute to troublesome water drainage.

Get Professional Technicians for Repairs

By understanding these common HVAC problems, you can take proactive measures, improve efficiency and indoor air quality, and potentially avoid costly repairs or replacements.

You should always leave it to your licensed HVAC technician to handle complex electrical or refrigerant air conditioning issues. For professional AC repairs and maintenance, contact the experts at Trusted Home Services. We provide 24/7 HVAC assistance.