When Buying A New Home Look At The Road System First
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January 22, 2010 | Category: Product Information
It is always interesting to view homes when driving. Whether its a county dirt road or a major highway you are always within close proximity to someones place of residence. I’m sure that the people that live close to the roads enjoy the quick access and associated short drives to their destination. But are they sacrificing health for a quick trip to the store?
When cars and trucks travel down any road tiny bits of dirt, dust and tire debris are thrown into the air. In addition, the amount of NO2 and NOX that is released from the exhausts can exceed the OSHA and ASHRAE limits when you are in close proximity to these effluents.
On a hot, dry, windless day you can often see the layers of dirt or dust hanging in the air close to a highway or dirt road. These layers of “hanging” dust obviously include particles that you can see ( usually larger than 20 microns in size) but this layer of dust also includes almost twice as many sub-micron particles ( usually less than 10 microns) that you can’t see.
When you combine the small, respirable sized particles along with the exhaust gases you have a fairly toxic chemical soup. While most homes along major highways are usually 200 to 400 feet or more from the road, a large number of homes rest within 50 t0 100 feet from secondary and dirt roads. The air currents from the traffic alone will push the airborne pollution away from the roads and toward the homes. Add some wind and you could have a pollution cloud around your house 12 to 24 hours a day.
On mild days many people open their windows or doors and allow the “fresh” air to come into the homes. If your home is in a low traffic zone you will notice a little outside dust on the furniture and flat surfaces. However, for those people living close to or near roads that are heavily used, you may find that after only a few hours there is a layer of dust and dirt every where. In fact many of these “close to the road” homeowners may not be able to open their windows at all at anytime of the year.
This issue is not limited to just the summer months. Since most homes use forced air ducted heating/cooling systems they employ a series of supply and return air grills located throughout the house. Often times the systems are not properly balanced and there is more return air than supply air pulled through the HVAC system. This creates a negative pressure in the house as the additional return air is pulled from the outside through small openings and communication points in the shell of the house.
Since the air outside has a large amount of this airborne particulate, some of that will be pulled into the house. This is why you can have a substantial amount of dust in the house even though the house is buttoned up.
Pure Air Systems offers a complete line of whole-house HEPA based air filtration systems that attach to the return air side of your HVAC systems. These unit have carbon media as well so they can effectively remove both the small airborne particles as well as the gaseous contaminants. In addition, the PAS units can assist in keeping the home pressurized to eliminate the negative air issue.
For more information go to their website at: www.pureairsystems.com.
Post Tags: negative air pressure outdoor contaminants outdoor pollution road dust
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About the Author: Don Musilli
My name is Don Musilli. I started Pure Air Systems in 1985 and then sold it in 2006. I continue to consult for PAS and write their blog and control their Twitter account. I also, on occasion, make changes to the website. The company is now almost 26 years old and has been a major player in offering commercial grade, high performance HEPA and Carbon based filtration systems for the commercial, institutional, industrial and residential markets.
I currently reside in Englewood, Florida where I write blogs and do social media marketing for a number of clients.
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