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David Richardson/NCI
Interior Hvac Diagram
David Richardson/NCI
If you know what to look for, a visual inspection provides clues to unsafe operation. It's never good for one package unit to exhaust into the economizer of an adjacent unit.
National Comfort Institute
Before you jump on the heat pump bashing bandwagon, look at your duct installation practices first.

AirTight Mechanical Establishes Links with Danfoss, PDU Cables

Dec. 1, 2009
AirTight Mechanical, Inc., a commercial HVAC contractor based in Charlotte, NC, has been granted partner status by Danfoss and PDU Cables.

AirTight Mechanical, Inc., a commercial HVAC contractor based in Charlotte, NC, has been granted partner status by Danfoss and PDU Cables.

As a certified Danfoss sales and service partner for Charlotte, NC and surrounding markets, AirTight can now provide its customers with the complete line of Danfoss variable frequency drive (VFD) products and services solutions. To earn the designation, AirTight had to meet established training and financial requirements. Through the program, the AirTight team achieved individual certifications for Danfoss products.

PDU Cables manufactures UL-listed under-floor power cable assemblies and is the sole supplier of the Air Guard Cable Seal product line.

AirTight Mechanical, Inc., has hired Ricky Kepley as a service technician. He has several years experience in HVAC and facilities support. Michelle Impaglia is AirTight's new production coordinator. She has an extensive background in service operations management.

About the Author

Terry McIver | Content Director - CB

A career publishing professional, Terence 'Terry' McIver has served three diverse industry publications in varying degrees of responsibility since 1987, and worked in marketing communications for a major U.S. corporation.He joined the staff of Contracting Business magazine in April 2005.

As director of content for Contracting Business, he produces daily content and feature articles for CB's 38,000 print subscribers and many more Internet visitors. He has written hundreds, if not two or three, pieces of news, features and contractor profile articles for CB's audience of quality HVACR contractors. He can also be found covering HVACR industry events or visiting with manufacturers and contractors. He also has significant experience in trade show planning.