Cochrane & Associates, LLC

Puerto Ricans Turn to Zimmetry Environmental for Answers to their Ventilation and IAQ Questions


Source: Cochrane & Associates, LLC

Zimmetry Environmental provides indoor air quality and ventilation consulting services to identify and resolve air quality problems in buildings.

Bayamon, Puerto Rico, November 10th, 2014 -- It is not uncommon for indoor pollutants to accumulate to levels that can pose health and comfort issues when too little outdoor air enters a building. These may include mold, bacteria, tobacco smoke, chemicals such as volatile organic compounds (VOCs), radon, allergens, elevated levels of carbon dioxide and carbon monoxide, and other pollutants.


For those who live or work in a building with this type of problem, one approach to lowering the concentration of indoor air pollutants is by increasing the amount of outdoor air coming into a structure.


Outdoor air enters and leaves a building thru infiltration, natural ventilation and mechanical ventilation.  With infiltration, outdoor air flows into the building through openings, joints, and cracks in walls, floors and ceilings, and around windows and doors.  Air may also move out of the building in this manner and this is known as exfiltration. With natural ventilation, air moves through opened windows and doors. Air movement associated with infiltration and natural ventilation is caused by air temperature differences between indoors and outdoors and by wind. Finally, there are a number of mechanical ventilation devices, from exhaust fans that remove air from a single room, such as bathrooms and kitchens, to air handling systems that use fans and duct work to continuously remove indoor air and distribute filtered and conditioned outdoor air to strategic points throughout the building.


“When there is little infiltration, natural ventilation or mechanical ventilation, the air exchange rate is low and pollutant levels will often rise,” said Harry Pena, President of Zimmetry Environmental. “Some residential heating and cooling systems, including some forced air heating systems, do not mechanically bring fresh air into the house. At Zimmetry, our indoor air quality experts can identify indoor pollutants, ventilation issues and provide recommendations on ways to resolve any problems that may be found in residential, commercial and institutional buildings.”


Zimmetry Environmental recently sponsored an educational video about home ventilation and indoor air quality that can be seen at:


To learn more about indoor air quality, ventilation and healthy indoor environments, please visit, call (787) 995.0005 or email


About Zimmetry Environmental

Since 2002, Zimmetry Environmental has been providing environmental consulting services to building owners and managers, architects, engineers, EHS professionals and Fortune 500 companies.  The company is based in Puerto Rico and provides services across the Caribbean and Central America.  The professionals at Zimmetry offer environmental compliance, indoor air quality (IAQ), asbestos, lead-based paint, Phase I ESAs and general environmental consulting services.

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