Seven Common AC Problems and How to Prevent Them

It’s getting HOT out there, y’all, and the last thing you need is for your air conditioner to break down and be left in the humidity with nothing but a measly desk fan to attempt to keep you cool (we’re sweating just thinking about it!). To prevent that unfortunate circumstance, we’ve put together a list of some common AC problems that come up during the summertime and how to prevent them, so you can stay cool as a cucumber all season long.

Dirty Filters

This is one of the most common AC problems you’ll encounter. The more your AC runs, the more often the filters need to be changed. Most filters should be replaced every three months, but if your AC is running more than usual (see: a humid NC summer), you’ll probably need to change it out more often.

For more on replacing your home air filters, read our blog post here!

Low Refrigerant

Your air conditioner uses refrigerant to remove the heat and humidity from the air in your home. If refrigerant leaks, your AC unit won’t be able to get all the hot air out, thus leaving you with a humid home—which no one wants in the summertime. In most cases, a professional will have to fix the leaks and repair the system.

Fan Issues

All air conditioners contain a fan that helps cool the air. A faulty motor, lack of lubrication, worn belts, or too much debris can cause a fan to go faulty. Make sure to address these problems ASAP, or your AC could be done for.

Faulty Thermostat

If you have an old or faulty thermostat, your AC might not be getting the right “instructions” from the control system to cool your home properly. This problem can be prevented by replacing or recalibrating your thermostats.

A smart thermostat may also be a good fit for you. Read more about smart thermostats here.

Dirty Condenser Oils

If you live in a highly polluted area, dirty condenser oils (which help to expel heat removed from the air) are a real problem. To prevent this as best as you can, keep the area near the condenser clear and clean.

Leaking Ducts

Your home’s ductwork is responsible for carrying the cool air from the AC unit throughout your home, ensuring all rooms are at the same temperature. A hole or break in your duct can cause your energy bills to go up, or prevent a room from getting cool altogether. If you have leaking ducts, you’ll want to call a professional to fix them right away.

Loud Unit

No AC unit is 100% silent, but if yours is making more noise than usual, you may need to get your ductwork, fans, and/or exterior vents checked and cleaned. Dust and debris accumulation can also cause your AC to be loud, so make sure you clean your unit often.