Your HVAC system can show many signs of malfunctioning in its lifetime—some issues can be repaired while some issues may require a complete replacement. If you live in an area where summer and fall temperatures remain consistently high on a daily basis, your air conditioner may be running in overdrive, causing it to wear out quickly. Even if you routinely perform, or hire an HVAC specialist to perform, air conditioning maintenance in Murfreesboro , you may find yourself in the market for a new unit.
Here are the telltale signs to look out for that can determine whether or not you need to replace your air conditioner. 
Your Air Conditioner is Old
A major determining factor that you need a new air conditioner is your unit’s age. Air conditioners and heat pumps generally show their age after 10 years of service. Consider your entire system’s age, as well. Furnaces or boilers have an average lifespan of 17 years. When choosing a new system, take the opportunity to upgrade to an ENERGY STAR model. Your local HVAC professional can help you.
Leaking Coolant
Air conditioners use liquid refrigerants to cool the air inside homes. If there’s a coolant leak, your AC unit becomes less effective. Have an HVAC specialist perform a diagnostic exam on your cooling system if you find evidence of leakage. It may be time to replace.
Tepid Air
If your air conditioner is on and warm air is circulating, there may be a serious problem with your unit, especially if coolant levels are normal.
Failing Sensor
Your HVAC system’s thermostat relies on sensors to be able to regulate the temperature inside. If your air conditioner’s sensor fails, your unit may run nonstop. Not only can your monthly energy bills rise, but also your air conditioner can become overworked.
Strange Sounds or Smells
Two telling signs that it’s time to replace your unit are strange noises and odd odors. Grinding or clanging noises should be very concerning, as well as foul odors such as burning rubber smells.