Special Advertising Section Special Advertising Section METERS FOR DEMANDING APPLICATIONS AAON HEATING AND COOLING PRODUCTS Over 20 years of Innovation The first two customers of AAON were Wal-Mart and McDonald’s. They came to AAON over two decades ago as a result of the expert ability of AAON to design and manufacture high-quality, energy-efficient equipment with low maintenance needs. We continue to exceed the high expectations that our customers have of us and our products. Focused on You Every job and every customer has different needs. With our indepth national account experience we know the importance of standardization of design throughout your buildings. But, because of our global presence we know the importance of understanding different geographical regions—Dubai has different HVAC needs than Chicago. We can even tailor equipment based on differing building types—office building needs differ from those of healthcare facilities. To find an AAON representative near you and learn more about AAON solutions visit www.aaon.com. www.info.hotims.com/25207-62 www.info.hotims.com/25207-63 NAFA COMPREHENSIVE AIR FILTRATION GUIDES Air Filtration—one of the most important components in an HVAC system, but possibly the least understood areas of the HVAC industry. The New NAFA Guide to Air Filtration 4th Ed., and the New Installation, Operation and Maintenance of Air Filtration Systems, 2 nd Ed.—the most informative and comprehensive works ever published in the air filtration industry. To order, contact the National Air Filtration Association 757-313-7400 www.nafahq.org. www.info.hotims.com/25207-64 www.info.hotims.com/25207-65 August 2009 ASHRAE Journal 73