The average central air conditioner lasts 12 to 15 years, though they can last longer with light use and proper maintenance. If your unit is reaching the end of its lifespan, you should look out for some telltale signs that it's starting to fail to avoid a full breakdown when you need it most. Below are some of the key signs indicating you need a new system or AC repair.

How to Tell When You Need AC Repair or Replacement

1. Unpleasant Odors

When it's operating correctly, an air conditioning unit shouldn't have a noticeable smell. However, bad odors can occur, and they usually mean bad news. Musty smells can indicate mold or mildew growth, so check and clean the condensate line and drain pan if necessary before calling for assistance. However, if you smell smoke or burning plastic, contact an AC repair professional immediately.

2. Unusually High Utility Bills

If you notice your electric bill is much higher than usual, even if it hasn't been particularly hot outside, your unit may be on its last legs. Worn parts and a deteriorating system can cause AC inefficiencies that make it more costly to keep your house cool. If your air conditioner seems to be sucking up power, call an AC repair service for an inspection.

3. A Warm Home

If your system appears to have a hard time keeping your home a comfortable temperature, there's something wrong with it. It may be low on refrigerant, have a damaged thermostat, or be too small for the size of your home. If the latter is the case, you'll need to upgrade to a more powerful, higher-BTU system.

To buy a new air conditioner or schedule AC repairs, contact Air Pro Heating & Air in Canton, GA. This Trane® Comfort Specialist has served clients throughout the metro area for nearly 30 years. They offer 24/7 emergency HVAC services and specialize in air conditioning installation and furnace maintenance. Visit their website to learn more about your AC options, or call (770) 386-5603 to schedule AC repair.