Why Does My Air Conditioner Smell? 5 Common AC Odors & How to Fix Them
Ever walked into your home and wondered, “What is that smell?” If it’s coming from your air conditioner, you’re not alone.
There are several potential reasons why your AC might be producing unpleasant odors. These smells can indicate anything from a minor issue to a more serious problem.
In this article, our experts will share the common smells your AC might emit, what they mean, and how to resolve them.
Smells Like Trash
What It Means
If your air conditioner smells like garbage, you might have a dead critter inside the unit. Small animals like birds, mice, and insects can find their way into your AC system, and unfortunately, sometimes they don’t find their way out.
How to Fix It
Start by turning off your AC unit. You don’t want to spread any more of that smell throughout your home.
Next, check the ducts and the outdoor unit for any signs of animal entry. If you spot the culprit, you may be able to remove it yourself if you feel comfortable doing so.
If not, contact an HVAC professional like Brinks Heating and Air to handle the removal and ensure no other animals can get in.
Smells Like Mold or Mildew
What It Means
A musty, moldy smell is a sign of mildew or mold growth within your AC. This usually happens when moisture doesn’t drain properly, leading to the growth of mold and mildew in the ducts or evaporator coils.
How to Fix It
First, replace your air filters. Clogged filters can contribute to poor airflow and moisture accumulation.
Next, check the condensate drain line to ensure it’s not blocked. Using a mixture of bleach and water, clean the drain pan and line.
If the smell persists, you likely need a professional ac cleaning service to address the issue comprehensively.
Smells Like Dirty Socks
What It Means
A smell akin to dirty socks often points to "Dirty Sock Syndrome," where bacteria grow on the coils in your air conditioner. This commonly occurs when the AC cycles between heating and cooling, providing an environment where bacteria can thrive.
How to Fix It
Turn off your AC and give those coils a good clean. You can use a commercially available coil cleaner to remove bacteria and grime.
Also, consider installing UV lights inside the unit to inhibit bacterial growth. Regular ac maintenance and cleaning can help prevent this smelly issue.
Smells Like Exhaust Fumes
What It Means
If your AC smells like exhaust fumes, it’s likely due to a fluid leak. Your air conditioner uses various fluids, and if these leak, they can produce an exhaust-like smell.
How to Fix It
Turn off your AC immediately and inspect the unit for any visible leaks. If you find a leak, it’s best to call in a professional.
They can safely locate and fix the leak, ensuring your system runs efficiently and safely.
Smells Like Burning
What It Means
A burning smell is a red flag and should be addressed immediately. This could indicate an electrical problem, such as a motor or wiring issue, or it could be that some component of the AC is overheating. If it smells like burning, it is burning!
How to Fix It
Turn off your AC right away to prevent any potential fire hazards. If something is burning, call 911 and leave your house. Do not come back until given the all-clear.
If it is safe to do so, inspect the unit for visible signs of damage or overheating. Whether you spot something or not, this is one problem that requires professional attention.
An HVAC technician can diagnose and fix electrical issues, ensuring your safety and the longevity of your unit.
Professional Services for All Smelly AC Problems
An unpleasant smell in your AC is a sign of an unpleasant problem. But there's hope! If your AC smells funny and you're not sure what to do next, don't hesitate to reach out to your HVAC pros in Brinks Heating and Air.
Our decades of expertise in all types of HVAC equipment can help you resolve any issues quickly, ensuring your home remains a comfortable and pleasant place to be. We've seen it all and offer you honest recommendations, premium services, and free second opinions on all AC concerns.
Call us at 763-219-7859 or send a message online and keep your cool air smell-free all summer!