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NYC 9/11 Public Portal Document Dttp;//wwwji8dca.com/consumer_mfo/conunerciB]_iiifo^

! J feHrdiHAIKA March 6, 2002 *

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Consumer Info 1^ You are here: Consumer Info » Commercial Into Consumer Brochure Commercial Consumer Xnfo Post Cleaning Checklist The following Is the "Introduction" fron- Introduction t . HVAC System Cleaning ► Commercial £SQd£fiS:AJSuldfiUll6JteE-CfinUD£C£ifiLCfillSUlDfiia. Consumer Znta Why a NADCA Certined company? A building's heating, ’ entilation, and air conditioning (HVAC) system provides conditioned air to occupied spaces within the facility. Membership Typically, air from within an occupied space, along with fresh air drawn Certification from outdoors, in drawn in through ductwork to an HVAC unit, where it Member Listings is conditioned. Before the air gets to the unit, it usually passes through ® designed to protect the mechanical equipment from becoming i---------------------------- LJ contaminated by large particles of dust and debris. Many filters Standards commonly used today will not prevent the introdur Jon of small Calendar of Events particles of dust and debris from the air stream into the system. Over Bookstore time, these deposits may form sizable accumulations. About NADCA In the course of normal building operations, the humidity level within . Industry Links the HVAC system can vary greatly. High humidity can combine with dust and debris in the system, often resulting In the growth of microbial contamination. In an HVAC system, microbial contamination (such as mold, fungus and their spores) may cause adverse health SS reactions among building occupants. Condense drain pans and other iSl system components often become heavily contaminated with fungal ra and bacterial slime.

I In order to maintain acceptable indoor air quality (lAQ) it is commonly recommended that mold, fungi, dust and other contaminants are ; E3 I cleaned out of the HVAC system. Cleaning HVAC systems provides many benefits. Cleaning lessens the likelihood of indoor air pollution in I I the building, and may help to alleviate health and comfort complaints I . by occupants. Clean HVAC systems perform more efficiently, which Ss may decrease energy costs. Well maintained mechanical components are likely to last longer, reducing the need for costly HVAC system replacement or repairs.

With growing awareness of the dangers of indoor air pollution, public concern for the cleanliness of ventilation systems has led to significant increase In demand for HVAC system cleaning services. Solving complex lAQ problems, however, often requires a team of multi-disciplined professionals, such as mechanical -contractors, filtration experts, test and balance specialists, industrial hygienists, and, of course, professional HVAC system cleaning ccMractors.

In most cases, HVAC system cleaning alone will not solve lAQ problems. It can, however, greatly reduce the threat of indoor air pollution when performed In conjunction with a program of regular building maintenance and lAQ evaluation. The U.S. Environmental Protection Agency (EPA) has published a comprehensive guide for building owners and managers wh ch is designed to help reduce the risk of indoor air pollution. The publication, "Building Air Quality," (provide link) provides guidelines which alt owners and managers should use and implement in their facilities. 1-3lD

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