Back to all

That Vexing Vapor Venting (Vapor Coming out of Vents)

November 24, 2024

You may have noticed sometimes on a hot and humid day, vapor will come out of your vehicle's vents when you have the air conditioning on.  Is that something to be concerned about? Well, it depends.

Sometimes that steam or vapor can be caused by water accumulating in the vent system after it has condensed.  And sometimes water can pool at the bottom of a vent.  When you turn on the blower mower, the air hits the water and may create steam or vapor that you can see in the cabin.

One thing to check is if that vapor smells like anything.  If it doesn't, that's a good sign. You may be able to run the fan for a while and the issue may just go away when things dry out.  But moisture collecting in the ventilation hoses in a hot vehicle may be a breeding ground for mold, and that can have health consequences.

There's another possibility. Ventilation systems often have drains to get rid of any accumulated water, and debris can sometimes clog them.  A technician can clean out those drains and you'll be back in business.

One thing to nose around for is a sweet smell coming out of your vents.  Sometimes the heater core (a component of your vehicle's heater system) can develop very tiny holes.  That sweet smell may be coolant that's been vaporized by those tiny holes entering your cabin. 

It's always a good thing to mention to your service advisor any abnormality you're seeing—or smelling—in your vehicle.  By venting a little about your vents, a technician can get to the bottom of the problem before it starts "clouding" the issue.

Tuffy Toledo
5154 Monroe Street
Toledo, OH 43623
4198417633
http://www.tuffytoledo.com

More articles from Tuffy Toledo (Monroe St)

Motor Oil?The Synthetic Advantage (Synthetic oil vs Conventional)

August 25, 2025

Youve probably already heard that regular oil changes are extremely important for the health of your vehicles engine. Thats sound advice. But what you might not know is when it comes to motor oil, the real thing may not be the best thing for your engine. There are different types of motor oil: ... More

Tracking True in Toledo: Wheel Alignment

August 18, 2025

At Tuffy Toledo, we occasionally see severe tire damage that could have been prevented with proper wheel alignment. During a Tuffy Toledo alignment service, your vehicle is put on an alignment rack where the tires, steering and suspension parts are inspected for problems. Then the alignment is c... More

Thoughtful Gifts for the Winter Driver

August 11, 2025

You may be one of those romantics who don't like giving (or getting) practical gifts for special occasions. Just wait until one of those gifts helps you out of a big predicament in cold weather, and you realize that practical gifts can be life savers. Here are a few things you may give the cold-... More