Whose DNA is Hidden in Your Air Ducts?

The air ducts in your home act like a time capsule. Everything from hair and dander to dead skin cells can remain in your HVAC system for years. DNA from other people can be hidden in your vents and ducts without you even knowing it. Air duct cleaning in St. Louis removes contaminants from your HVAC system and is the best way to improve the indoor air quality of your home. With poor air quality, your family isn’t just breathing in unhealthy air; they can also be breathing in other people’s DNA.

Previous Residents

When buying or renting a home, you don’t know who was living there before you. You may know their names, and you might even meet them once or twice before you move in, but you don’t really know them. They – and their DNA – are essentially strangers. When you live together with someone, you get used to who they are, and you agree to share the same space and air as them.

But you probably don’t agree to share the same air with the previous residents of the home. Their dead skin cells, hair, and pet dander have been building up in the air ducts. Probably since before you even moved in. And they’re likely still there now. Each time the air flows through your house, the DNA of previous residents joins the air quality, becoming part of what you breathe in. And if they never cleaned the air ducts, the DNA of even older residents enters the equation. Professional air duct cleaning ensures that once you get the keys to the house, you’ll never have to unintentionally share space with previous residents.


Part of owning a house for many is the pride and joy of sharing it with others. Having guests over, even just for a quick visit, gives time for their DNA to enter your HVAC system. Then it can hide out in the vents and ducts in your house. When it’s time for your guests to go home, you want all of them to go home. However, if you aren’t cleaning your air ducts regularly, the DNA of your guests can hang around for quite some time.


At some point, there will be an issue in your house that you can’t fix yourself. Calling in repair teams, movers, and even decorators invites their DNA into your home and your air quality. Much like with previous residents, these are strangers in your house. Humans are constantly shedding microscopic parts of their DNA. And if you don’t get your HVAC system cleaned out, the DNA of everyone who steps through your door is in your air.

Cardinal Carpet and Air Duct Cleaning in St. Louis

At Cardinal Carpet and Air Duct Cleaning, we’re devoted to helping your family home be as healthy and fresh as possible. As a father and son team, we know how important your family’s health can be. That’s why we offer quality air duct cleaning to St. Louis homes. The air ducts in your home contain the DNA of previous residents and every guest that enters your home. To clean your air ducts and help your family enjoy higher indoor air quality, give us a call at (314) 501-5462.

Call Now (636) 288-8910