AC Not Blowing Cold Air? Here’s What May Be Wrong

AC Not Blowing Cold Air? Here's What May Be WrongWhat’s wrong with my air conditioner? If your air conditioner is not blowing cold air – or not blowing air at all – it may not mean the end of your ac unit. In fact, in many cases, this problem has a simple fix.

Why Isn’t My AC Blowing Cold Air?

  • Reasons for AC Blowing Warm Air

    • Improper Thermostat Setting
      If your AC is alternating between blowing warm and cold air, check to see if your thermostat fan is set to “on.” In this setting, your system will blow air constantly – even if it is not cooling air. Simply switch your thermostat to the “auto” setting and the problem is solved.
    • Dirty Air Filter
      If your system is outfitted with a filthy home air filter, it can thwart proper circulation, forcing your system to work harder and impacting performance. If your air filter is very dirty, replace it and see if this addresses the problem.
    • Outside Unit Smothered by Vegetation or Debris
      Your unit needs breathing room to perform properly. Check for and clear weeds and detritus around your outdoor unit, ensuring ample circulation. If you notice your fan is not working, contact your local AC repairman for a professional assessment here.
  • Reasons No Air is Blowing from Supply Vents

    • Improper Temperature Setting
      If your system isn’t blowing air at all, make sure the temperature setting is at least 5 degrees cooler than the air in your home. Also, check and make sure other family members haven’t altered thermostat settings, turning the unit to “heat” or “off.”
    • Dirty Air Filter
      If your system has operated with a dirty air filter for a long time, or the filter is so dirty it has completely blocked air flow, it may have a frozen coil. In this case, after you change your air filter, you may have to turn your system off and wait a while – up to several hours – for the coil to thaw to verify proper operation.
    • Electrical Issues
      There are a number of ways electrical issues could impact air conditioner performance. A unit that has experienced a surge could trip a circuit breaker, cutting power to the unit. If this is not the problem, check the power switches at the outside unit and the air handler (inside unit). There are a number of scenarios in which they may have been turned off. If you are able to get your system back in operation, and this problem repeats itself, your air conditioner may be overheating. In this case, fast emergency repair service is highly recommended to prevent damage to the system.

Are you still puzzled as to why your AC is not blowing cold air? Get down to the source of the problem quickly, reduce snowballing repair costs, and safeguard your system’s lifespan. Contact H & H Heating & Air Conditioning for a system inspection today.

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