When My Air Conditioner Is On It Smells

When My Air Conditioner Is On It Smells

Living in Houston, Texas during its hot and humid summers can sometimes feel unbearable, so making sure to have a fully functional air conditioning system is utmost important for you and your family’s comfort in your home.  That being said, having a AC that is working but when it runs you have this foul smell running through your home can be majorly frustrating, and not to mention just gross.


One of the things that you should feel when your AC unit is working and bring cool air into your home is being refreshed and relieved of the heat outside.  But if you have this foul smell running through your home along with the cool air, you are not feeling very refresh or relieved anymore.


If this foul and strange smell is floating through you home, it is important to find out just why there is a smell and how to fix it.  If you neglect to, it could become hazardous in various ways for you and your family.


Here are some things to check that are common reasons why you may be getting that foul smell:

  • Having Moisture in You Ductwork – Ductwork is what the outdoor AC unit pushes the newly cooled air through to bring it back into your home.  These are tunnel like and are connected to your vents and registers where the cool air blows out.  If your AC is not properly removing the moisture from the air, it can collect in the ductwork and cause mildew to start growing.  Also, mildew can grow if the ducts were not properly sealed.
  • Internal Problems – If there are issues inside your air conditioner such as parts being dirty or has mildew growth on it can cause that smell.
  • Clogged Drip Pan – If you drip pan has been moved, clogged, or is filling up too quickly this can cause mildew to grow.  Be sure to check and see if you can see the clog, if you can you can try to unclog it, but if you cannot see it, it is most likely located further down the drain.
  • Condensate Drain Line Clogged – You will find this drain line run from your evaporator coils all the way to your outdoor AC that is in charge of removing condensation from the coils.  If it is clogged, there is a chance that mildew can grow in it as well as along the coils.
  • Filters are Clogged or Dirty – Your air filters’ job is to catch as much dirt, debris, dust, and much more as possible.  This includes organic particles that if overly exposed to moisture can quickly have mildew grow.  Make sure these are changed regularly.


To take care of most of these issues, it may be best to call your trusted HVAC specialist to come out.  Usually having them come out in the early springtime and providing your air conditioner with an AC tune-up can help eliminate or prevent any of these issues from happening.  During the tune-up they will thoroughly clean, lubricate, and check for any possible problems within your AC.  It is a great investment for such a small price that could end up saving you lots down the road.


If your air conditioning system is not operating correctly or is in need of its annual maintenance to prevent potential issues, please contact us today to schedule your appointment.  Do not be strand in the blasting heat of Houston, Texas summer without a cool home.


Autumn Mechanical
18812 Tomato St.
Spring, TX 77379
(713) 864-8368
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