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As we transition from spring to summer in the Triangle, many people are finding that their air conditioning systems are not keeping up with the demand of warmer temperatures. It is frustrating to hear your unit engaged, yet feel only warm air being pumped out through your vents. If your HVAC system is failing to keep your home cool, there are a number of potential reasons. We have compiled a short list of common causes for air conditioning system failure:

Restricted Air Flow

If your unit is running but only blowing warm air, it is likely due to restricted air flow. There are a couple of ways to test for air flow issues:

  • Check your air filters. Dirty or clogged air filters will restrict air flow and overwork your unit. 1” air filters should be replaced every 2 to 3 months. Larger 3” to 5” air filters can last up to a year.
  • Check to see if there is frost on the lines. If you find that there is ice around your unit, turn it off and let it thaw. Free the area of debris and make sure there is plenty of air flow.

If the problem persists after you have performed these tests, you will need to have a professional to examine your unit.

Leaking Refrigerant

In addition to lack of air flow, low refrigerant will cause your air conditioning system to pump out warm air. Your HVAC unit will not simply run out of Freon. If your system is low on refrigerant, it means there is a leak. Left untreated, low coolant will reduce the lifespan of your unit. Call us if you suspect your unit is leaking Freon.

Tripped Breaker

If the unit will not engage at all, you may have a tripped breaker. To test, switch the breaker to the off position (if it is not already off) and then back to the “on” position. Even if the unit does start up, there is a good chance that the tripped breaker is a symptom of overuse. New Light Services notes if you have a dehumidifier on the same circuit as your HVAC system, your unit could continue to trip the breaker. If this problem continues, it is important to have your system examined by a professional technician.

Contact us to schedule a maintenance appointment with one of our expert technicians.

Don Cootware