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My AC isn’t Blowing Air Out of the Vents

By March 20, 2024General

Imagine this scenario: the scorching Kansas heat is relentless outside. You’ve cranked up your air conditioning system, only to find that despite its persistent hum, no refreshing breeze is making its way through your vents.

Frustrating, right? But feat not, you’re not alone with this issue. It’s a common issue that many homeowners encounter, especially in the midst of summer’s swelter.

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The team here at Fenix Heating and Cooling has been the trusted HVAC professionals in Wichita since 1988. With decades of experience under our belt, we’ve seen it all when it comes to air conditioning woes.

From minor hiccups to major malfunctions, we understand the urgency of keeping your home cool and comfortable, particularly during those scorching Kansas summers.

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In this comprehensive troubleshooting guide, we’ll delve into the possible reasons why your AC may be running but failing to deliver the air you crave through your vents.

Whether you’re a seasoned DIY enthusiast or simply seeking insight before calling in the experts at Fenix, our aim is to equip you with the knowledge and confidence to tackle this common issue head-on. Let’s dive in!

A large portion of issues with your air conditioning stem from these 2 causes:

  • Lack of Maintenance – Routine maintenance is key to keeping your system running efficiently for many years to come. Our Protection Plan Service Program offers affordable twice-yearly maintenance on your system to ensure small issues are identified and fixed before they lead to much larger issues.
    Protection Plan Service Program
  • Broken HVAC components – While routine maintenance is crucial to increasing the life of your system, you may still encounter broken or malfunctioning parts that require repair or replacement. A lot of these issues will go unnoticed until your unit stops working or air stops coming out of your vents.
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Here are the 11 reasons why your AC is running, but there is no air coming out of your vents.

  1. Check Your Vents

    If your AC is running and you are not feeling air coming out of your vents, you will first want to check all of your vents to see if you have an issue with just one or with multiple vents.

    If you notice a lack of airflow in just one area of your home, check to ensure that the registers in this area are completely open. Most vents have a switch or toggle to open and close the vents – you want to make sure that none of your vents have been inadvertently closed.

    You also want to check the vents for any obstructions that could be blocking the airflow. If you notice any, clear the obstructions and you will hopefully have fixed your issue.
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  2. Thermostat Issues

    If you are still experiencing lack of air coming from your vents, your thermostat is the next likely culprit. Make sure that your thermostat is switched to ‘cool’, and that the temperature is set lower than the current temperature of your home.

    If you have a battery-operated thermostat, you will also want to check that your batteries aren’t in need of a change. Low or dead batteries can cause your thermostat to malfunction and not communicate effectively with your system and can ultimately impact your airflow.

    While at your thermostat, you will want to open the cover to check for any dust or debris that may be affecting your connection. You can remove any grime with a soft brush.

    If you notice any wires that are damaged or broken, it’s time to call in the professionals at Fenix Heating & Cooling for a fix to get your AC back up and running –
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  3. AC Blower Issues

    If you can hear your AC running, but the fan isn’t kicking on you will want to try lowering the temperature on your thermostat a few degrees. If your fan is still suspiciously quiet, this can be an indication of an issues with the AC blower.

    The AC blower pushes the cold air out to the ductwork and through your house. Excessive dust can accumulate on the blower blades and cause the blower motor to malfunction.

    To address this issue, turn off your AC and remove the covers on your indoor unit to expose the AC blower. Once open, gently wipe away any grime from the blower, replace the covers, and turn your AC back on.

    fenix heating and cooling wichita ks

    If your airflow is still lacking, give us a call at (316)945-4842 and we’ll send one of my HVAC experts out to properly diagnose and resolve this fan issue for you.

  4. Check Your Air Filter

    On the opposite side, if your AC and fan are both running and you still are not getting airflow through your vents, you will want to check for a dirty air filter. The air filter collects dust and debris and can block airflow through your system if not changed routinely.

    If left dirty and unchanged, it will greatly restrict airflow through your system and can cause your unit’s coils to freeze over.

    Furnace filters, an important factor in how long does a furnace last

  5. Frozen Evaporator Coil

    A dirty air filter or a blocked return vent can greatly restrict airflow through your unit and cause the evaporator coil to freeze over. When this happens, the air is blocked from passing over the coils and into your duct system to be pushed out through the vents.

    The first place that evaporator coils will freeze is within your air handler. If you notice ice forming on the lines or if they’re already frozen over, you will want to turn your thermostat fan to ‘ON’ instead of ‘Auto’ to help thaw the refrigerant lines.

    It’s very important that you do not chip away the ice or try to use a hair dryer to melt the ice. This can cause further damage to your unit.

    If you have changed your air filter and checked your return vents for obstructions and your evaporator coil continues to freeze over, it’s time for a call to Fenix at (316)945-4842.

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  6. Leaking or Blocked Ducts

    The ductwork is in place to deliver cold air throughout your home. With time and with lack of maintenance, your ductwork can become damaged or clogged. Issues with your ductwork can greatly restrict the airflow throughout the vents in your home.

    Have you done any recent work in your attic? This may have caused damage or a section of your ductwork to come apart.

    If you notice uneven cooling, dust in the air, or you notice twists in your ductwork, you will want to contact a professional at Fenix Heating & Cooling or try to inspect the ductwork yourself.

    You will want to check for crack or holes within the ductwork as well as for leaks where the ducts join together. You will want to use foil-faced tape or mastic air duct sealant to seal any leaks or holes in your ductwork.

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  7. Over or Undersized Ductwork

    Incorrectly sized ductwork can also cause airflow issues throughout your home.

    Ductwork that is oversized will have a hard time maintaining air pressure and will result in low air pressure throughout your vents.

    Undersized ductwork will cause the airflow to be heavily restricted and will not be able to distribute it evenly throughout your home, which will result in low airflow from your vents.

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    If you suspect an issue with ductwork sizing, give us a call at (316)945-4842 for proper inspection.

  8. Limited Return Air

    If your system is not receiving adequate air from your return vents, the air conditioning process will not work efficiently. To efficiently distribute cool air throughout your home, the same amount of air must return to be reconditioned and redistributed through the vents.

    You will want to check and ensure that the return vents throughout your vent are not blocked. If these vents are blocked, it can lead to a lack of air being pulled back into your system.

    If you are concerned that you don’t have the adequate amount of return air vents in your home, call on the HVAC experts at Fenix Heating & Cooling at (316)945-4842 for a thorough inspection.

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  9. Condenser Unit is Dirty or Damaged

    Leaves, dirt, and other debris can easily get stuck in your air conditioner’s outdoor unit. This will cause your unit to have to work harder and can lead to your unit overheating.

    Routine maintenance is key to ensuring that debris don’t accumulate in your outside unit and cause issues. We recommend our Protection Plan Service Program for affordable twice-yearly cleaning and maintenance that will ensure your unit continues to run efficiently for years to come. Visit give us a call at (316)945-4842 to learn more.

    Protection Plan Service Program

  10. Low Refrigerant Levels

    If your refrigerant levels are low, you may notice low or no air blowing through the vents as well as reduced cooling throughout your home.

    A lack or AC maintenance can lead to corrosion buildup in your air conditioner. This buildup can cause cracks and holes in your AC coil and lead to leakage or your refrigerant.

    Call on Fenix Heating & Cooling at (316)945-4842 to refill your refrigerant to ensure the levels match exactly with the levels specified by your AC’s manufacturer.

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  11. Aging HVAC Unit

    A significant decrease in your air conditioner’s airflow can be an indication that your unit might be near the end of its life. Towards the end of life, a unit does not work as efficiently and cannot always maintain optimum airflow.

    Typical HVAC units last 15-20 years and up to 25-30 years with proper maintenance. Your HVAC unit will get less efficient as it ages. If your unit is older than this, one of our HVAC professionals can thoroughly inspect your unit and go over the best options for your individual needs.

    Give us a call to learn more at (316)945-4842 to learn more about our current specials and financing deals to get you into a new unit affordably.

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If you have followed these troubleshooting steps and are still having airflow issues from your vents, it may be the sign of a bigger issues. There are a handful of issues that can limit the airflow to your vents and will require a call to Fenix Heating & Cooling at (316)945-4842 to properly fix.

  • Indoor fan motor failure
  • Capacitor failure
  • Malfunctioning compressor
  • Mechanical problems

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As we wrap up our troubleshooting journey, remember that while DIY fixes can be tempting, safety should always come first. If you’ve exhausted our tips and find yourself still facing an AC that isn’t pushing air through your vents, don’t hesitate to reach out to the team at Fenix Heating & Cooling at (316)945-4842.

Our team of seasoned professionals is here to provide swift and reliable solutions, ensuring your home remains an oasis of comfort, even amidst the sweltering Kansas heat.

With Fenix Heating & Cooling by your side, you can rest easy knowing that your HVAC needs are in capable hands. From routine maintenance to emergency repairs, we’re committed to keeping your home cool and your family comfortable year-round. So, until next time – stay cool, Wichita!

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Trust the Fenix Comfort Heroes to rescue you from your HVAC problems. Don’t wait until the first day of winter to discover your furnace is not working! Turn it on today. If it’s not running properly, contact us and we’ll work to get your system fixed before the first frost.

Join the Fenix Protection Plan Service Program today! You’ll receive some nice benefits, like 20% off all parts and labor and having the peace of mind to know that your HVAC unit is being serviced by the best comfort specialists in Wichita!

Visit our showroom to see all our trusted products on display at 802 West 2nd St., just across from Wichita’s new library, or give us a call at 316-945-4842.

Be sure to check out our current promotions to get the best deal on meeting your comfort needs!