Nothing draws attention like a big piece of equipment sitting in a booth. That was definitely the case at this year's AHR Expo, where exhibitors set up their cooling towers, chillers, rooftop units, and other large mechanical systems to catch the eyes of attendees.

Every year the AHR Expo has a plethora of exhibitors showing their new duct products. This year was no different, as manufacturers proudly displayed their new ducts, duct liners, duct tapes, and various duct accessories.

Maybe it was the equipment that pulled hordes of attendees into the booths highlighting residential furnaces at the 2005 AHR Expo. Exhibitors had a whole lineup of new and exciting residential furnaces at the show.

The world of grilles, registers, and diffusers has changed remarkably in the last few years. This was evident at the AHR Expo, where manufacturers happily showed off their range of products in a variety of colors, styles, and finishes.

Among the exhibitors at the 2005 AHR Expo were a sizable number of manufacturers offering a wide range of new air movement products. Products ranging from quiet bathroom fans for the home to turbine ventilators for industrial applications were showcased.

Some of the most important relationships contractors can have are with their distributors. Both sides often grumble about the other. But like a good marriage, a successful contractor-distributor relationship is built over time and needs constant work and attention so that both parties are happy.

Diffuser manufacturers often rate their products based on the Air Diffuser Performance Index (ADPI). This designation helps contractors and engineers select the proper diffuser. This article looks at what ADPI is and is not, and how to use it in making selections.

Customers are looking for more options in the world of grilles, registers, and diffusers. Many companies are complying with this request by offering these products in a wide range of materials, sizes, styles, and finishes.

In some situations, such as prisons and zoos, contractors and engineers turn to security registers and grilles. Though there is an energy penalty associated with them, when security is an issue, only security registers and grilles will do.

Mission Foods converted its facilities to non-ozone-depleting refrigerants. The company operates a plant that contains air-cooled chiller systems and a warehouse with walk-in units. These systems utilized eight compressors and contained far more than 50 pounds of R-22. Air Refrigeration LLC tackled the conversion.