This month on

Best of 2009! Tour's Year in Review

The most read HPAC Engineering articles of 2009 included:

  • Controlling Outside Airflow in VAV Systems,” by Kenneth M. Elovitz, PE, Esq. (October)

  • Boiler Inspection, Maintenance, Safety,” by Stephen Kleva (April)

  • The Benefits of VFDs on Cooling Towers,” by Joe Koepke (August)

Visit to catch up on any you may have missed.


HPAC Engineering offers electronic newsletters to its readers via e-mail at no charge. Fastrack, which is issued twice a month, reports timely and useful developments in the fields of HVAC engineering, engineered plumbing, green buildings, noise and vibration, and mechanical systems for commercial, industrial, and institutional buildings. Issued once a month, Engineered Green Buildings is devoted exclusively to the green-buildings community. It features reports on green-building projects, articles on ways engineers are incorporating green-building solutions, and ideas for promoting a greener future.

To subscribe to either e-newsletter, visit

HOTTEST ARTICLES's most popular articles over the last three months include:

  • “Becoming a LEED Professional,” by Peter C. D'Antonio, PE, CEM, LEED AP. (November 2004)

  • “Ground Source Heat Pumps for Commercial Buildings” (September 2008), in which Steve Kavanaugh discusses the benefits of simplifying in-ground piping and above-ground HVAC systems.

  • “HVAC-System Acoustics” (August 2008), in which Mark Terzigni examines methods of reducing unwanted sound associated with mechanical systems in commercial buildings.

These articles are only a sampling of's Top 10. Visit to view this selection and check out the rest of the list.