These Are 3 Reasons Your AC Smells Bad When It Turns On


If you’ve ever turned your air conditioning system on on a hot and humid Florida day, only to be greeted with an unpleasant mildew smell wafting from the air vents, we feel your pain.

This is something that lots of homeowners have had to deal with, but luckily, ridding your air conditioning system of foul odors is typically an easy fix.

Learn what cause your air conditioning system to smell back and what you can do about it here.

What Causes Air Conditioners To Stink?

There are a few factors that can cause your air conditioning system to smell bad, but here are most common three:

1. A clogged drain pan
Every air conditioning system will produce condensation as it cycles. This condensation builds up and should drain to the outside of your home via the drain line and into the drain pan.

As time goes on, the drain line and drain pan can clog and cause water to accumulate. You know what that means — mold.

As mold grows in your air conditioning system, the smell can waft through your home. Luckily, this problem can be easily remedied by unclogging the drain pan and/or drain line.

2. Excess moisture in the air vent
Moisture can wreak havoc on your air conditioning system in more ways than one. Because Florida is almost always humid, excess moisture can easily build up in the air vents in your home.

When the water sits for long periods of time, mold can form. As a result, when your air conditioning system kicks on and blows air over the mold, the scent of mildew can waft through your home.

3. A too-large air conditioner
Bigger isn’t always better when it comes to the size of your air conditioning system. If your system is too large for your home, it can short cycle.

Put simply, this means your air conditioning system will essentially cool your home too quickly, resulting in short cycles. While this might not seem like a bad thing, it almost always means your system won’t run long enough to remove from your home.

After all, air conditioners don’t just cool your home, they dehumidify too.

When your air conditioner doesn’t have time to be properly remove excess moisture, it sits in the ductwork and can result in mold growth.

This isn’t isn’t common, but if you’re not sure if your system is the right size, call your local HVAC techs for a consultation.

Contact Climate Design Today for Air Conditioning Repairs In Clearwater, Florida

At Climate Design, our team of HVAC professionals provides quick and efficient air conditioning repairs. If your air conditioning system producing a less-than-pleasant odor, we want to help.

Contact us today to learn more about our quality repair services and be sure to ask about our maintenance program to keep your AC running smoothly year round.