Serving South Florida since 1973

Is the Air in your House Dirtier than the Air Outside?

Posted on Air Quality, Blog November 15, 2016


We don’t mean to scare you, but it’s quite possible that your home’s indoor air quality could be worse than the South Florida air outside. In fact, the air you’re breathing RIGHT NOW in your home could be 2 to 5 times as polluted as the air just outside your window.


In order to understand how this is possible, you first have to understand the basics of air conditioning and air ducts.

The Overly Simplified Explanation of Air Conditioning & Air Ducts

The air inside your house has to start from somewhere — the outside. The warm (polluted) air from outside your house runs through your outdoor HVAC unit, gets cooled, and gets delivered to the rooms in your house via ducts and fans. This process includes things like condensers, evaporators, and refrigerants, but we’ll spare you the boring details (unless you want the boring details, see video below).

We know what you’re probably thinking… isn’t the outdoor air getting filtered before it enters my house?

The answer is yes, but it’s far from perfect. The filters might only be removing 10% of pollutants. Naturally, your ducts will be lined with dust, animal dander, mold spores, and chemicals that came from outside that will then make their way into your house, onto your comfy couch, and into your lungs as you innocently watch Dancing with the Stars (#TeamDerek).

I still don’t understand… how can my indoor air quality be worse?

For the record, we’re not saying that the air inside your house is definitely worse. We’re just saying that it’s pretty likely.

The pollutants brought into your house from your air conditioning system’s air ducts are only part of the problem. If your stove is leaking gas, you’re breathing that in. If there’s black mold in your house, that’s not good either. If you’re using chemicals in your house (ex: hair spray, cleaning chemicals, etc), that could be polluting your air. If you recently painted your house, those fumes are poisoning your indoor air. If you open your windows to let in “fresh air”, you could be adding unfiltered pollutants to your house.

quebec-license-plateblackPS: Yes, we know that the fall and winters in South Florida are the best times to open your windows to let in fresh air. Our windows are open right now as we type this article. It’s why we live here. It’s also why you see so many license plates from
Quebec this time of year. 






We can help you improve one aspect of your indoor air quality…

There’ nothing we can do about the gases from your stove or the paint fumes coming from your latest home project, besides bringing awareness to the importance of maintaining clean air in your house. Although, we CAN assist you through cleaning out your air ducts.

We know, we know…. we’re a bit biased when it comes to air conditioning stuff, but we truly believe that cleaning air ducts goes a longgggg way to improving your home’s air quality. It makes sense if you really think about it– reducing the amount of dust, dander, and mold spores being circulated through your house will make your air a lot cleaner.

Don’t believe us? We’d be glad to show you what your ducts look like right now. For a sneak peek of what your ducts might look like, see these crazy before-and-after photos.

Our final answer

So, is the air inside your house dirtier than the outside air? The answer is somewhere between MAYBE and LIKELY.

If nothing else, we hope that this article has made you aware of the air you breathe inside your house. If you want to have a better idea of the status of your indoor air quality, don’t hesitate to contact us. We’ll take a look, and let you know if an air duct cleaning is in your family’s best interest. Contact us today for your free estimate.




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