Air Filtration Systems, Corp 702-313-2060
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Common Chemicals
Found In Buildings


FC Industry

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Automotive Exhaust


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IAQ Tips
Commercial Buildings

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Do you have a question?
Email us and we will try to answer.

Ozone, I’m confused - is it a good thing or a bad thing?
Before we try to remove the fog of confusion let’s define Ozone. “Ozone is a gas that occurs both in the Earth’s upper atmosphere and at ground level. Ozone can be ‘good’ or ‘bad’ for your health and the environment depending upon its location in the atmosphere” as defined be the EPA.
  • Good Ozone is the protective layer of ozone in the stratosphere that has received much attention recently 
  • Bad ozone is ozone found at ground-level. Ground-level ozone is a harmful pollutant and can cause a variety of health issues.

According to the EPA “Breathing ozone can trigger a variety of health problems including chest pain, coughing, throat irritation, and congestion. It can worsen bronchitis, emphysema, and asthma. ‘Bad’ ozone also can reduce lung function and inflame the linings of the lungs. Repeated exposure may permanently scar lung tissue.” These adverse effects of ozone have prompted many governmental agencies and trade organizations to oppose the use of air purification equipment that generates ozone in occupies spaces.

An interesting study performed by Jeffery Siegel, Richard Corsi and Ping Zhao of the University of Texas at Austin documented that filters loaded with particulate (dirty filters) are able to remove ozone. This phenomenon is caused by the reaction of the ozone with the contaminate in the air filter. This chemical reaction can create harmful byproducts depending upon the composition of the particulate. Byproducts such as formaldehyde and ultra-fine particulate have been documented and are of particular concern.

Send me more information on how I can protect my building from ozone.

We have sewer odors coming in from our HVAC, how can we remove these odors?
Odds are the sewer odors are coming from a near by sewer vent that is near the HVAC unit. You can re-pipe the sewer vent or install one of our PVC Vent Scrubbers that is made out of the same ABS pipe that most sewer vent are made of. This is consider an extension of your current pipes. We use a UL Class 1 media that was designed to remove sewer odors and once used you can just place it in our landfill without hurting the environment.

We only have one serious caution using sewer vent filters/scrubbers. If the plumbing contractor did his job and the pipes are sealed or there is no penetrations or cracks in the pipes after the contractor has left then it is ok to install our PVC Vent Scrubber. If you notice a sewer odor after you installed the scrubber then you have a serious problem with your pipes in the wall that has to be repaired.

Question: Does your sewer vent filter create a vacuum in the pipe and cause the water traps to drain?
Good Question, this has been a problem with most vent filters. We use a vacuum breaker to keep this from occurring. Our PVC Vent Scrubber can be used on any vent up to 4", after this it takes a different type of scrubber or vent filter due to the amount of air that has to be delivered into the vent to prevent p-traps from draining. If your sewer or grease trap vent is over 4" then just give us a call to set an appointment so we can match the correct scrubber to control your odors.

Send me more information on how I can protect my building from sewer odors.

New study reports: Diesel Fumes Damage Your Brain. Find out how you can protect your indoor air form vehicle & diesel exhaust. >>More

Douglas Kosar from the University of Chicago recently performed testing to quantify the affects of the bypass of unfiltered air around a filter.. >>More

Air Filtration Systems, Corp.
Las Vegas , Nevada

Phone: 702-313-2060
Fax: 702-446-5216
Contact by E-Mail
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