8 Signs Your Air Conditioner Needs to Be Replaced

8 Signs You Need to Replace Your Air Conditioner

Sweltering summer heat in North Carolina is no joke for your air conditioner. Your AC system is forced to work harder to keep your home cool and consequently is the most frequent time of year when you experience system breakdowns. As a homeowner with an aging AC unit, it is crucial you familiarize yourself with the top 8 signs your air conditioner needs replacement.  

#1 Your Air Conditioner Uses R22 Refrigerant

If you have an older air conditioner or heating system, it likely uses an R-22 refrigerant (Freon). At the start of 2020, the US EPA (Environmental Protection Agency) has banned the importation and manufacturing of R22 due to its negative environmental impacts. Future repairs for AC systems that use R22 will end up costing you more in the long run due to the high cost and limited access to the refrigerant. 

#2 Your AC Unit is Old

The average lifespan of an air conditioning system is between 10-15 years. If your unit is approaching or past this expectancy, you may want to consider a new unit and explore AC financing options. The expense of a new AC unit could be significant, but the greater efficiency it provides will save money in utility costs and repairs. 

#3 AC System is Making Strange Noises and Smells like Sulfur

Ever wonder, why is my AC unit making a clicking noise? A hissing sound? A screeching cry? There are a number of different sounds that come from your air conditioner, many of which may suggest your cooling system may need repair or even replacement. The majority of these unusual sounds come from your outdoor unit as it runs. Many reasons may cause these noises such as a fan belt wearing, an object blocking your fan, electrical issues, refrigerant leaks, condensate drain blockage, fan motor bearings failing, and more! It’s best to schedule an appointment with an AC technician if you notice unusual noises coming from your AC system. 

Notice unpleasant odors from your AC unit? If your air conditioner has a musty smell when blowing air, there could be a build up of mold in your system. This mold contamination blows spores into your home and can cause your family to become very sick. If you smell a strong burning smell, it is likely you have an electrical wiring issue. 

#4 Frequent Repairs

We know homeowners want their air conditioning unit to hang on as long as possible, but if you’re frequently calling your AC repair company and having to replace components of your system, it may be time to consider replacement. Forking up money for repairs that only prolong unit life for a short time is inefficient and places burden on your household budget. We know replacing your AC unit isn’t always in your budget, which is why Carolina Comfort Air AC technicians advise when your system is nearing the end of its lifespan, giving you time to consider financing options.

#5 AC is Blowing Warm Air

If your AC is blowing warm air, it could be indicating issues with your compressor or refrigerant levels. If your AC unit is not keeping your home cool, it could also mean that your home’s duct work is inefficient, pulling air from outside or even attic space rather than from your AC compressor. Our Trane certified HVAC experts will be able to pinpoint the issue and determine if a repair is viable or if the AC system requires replacement. 

#6 Little to No Air Flow

If you do not feel air coming out of the vents or the flow of air is very weak, your AC system is not circulating air properly throughout your home. In the heat of summer, poor airflow will leave you and your family hot and uncomfortable. Weak air flow often means there is a problem with air ducts or the compressor. 

#7 Build Up of Water Underneath the Air Conditioner

While you may see some condensate moisture around your AC system, puddles or buildup with odd coloration may be a larger issue. Refrigerant leaks are a high cause of concern because refrigerants are poisonous. Condensate leaks could be caused by blocked or broken drain lines, and should be looked at by an AC repair professional. 

#8 Increase in Energy Bills

It’s normal for energy bills to rise during the heat of summer. However, if you notice a spike in your bill that does not seem to correlate with the increased use, the efficiency of your AC system may be compromised. There could be a related issue with your ductwork, thermostat, or your air conditioning unit may be reaching the end of its life.


Understanding the tell-tale signs that your air conditioner has reached the end of its life and may soon need replacement is vital as a homeowner. The sooner you acknowledge these warning signs, the more time you have to budget and explore the best AC financing options for your family. 

For AC repair and replacement help from the professionals, schedule an appointment with Carolina Comfort Air, Carolina’s #1 HVAC repair and replacement experts!