The wait is over. The Department of Energy (DOE) has set the new standard for central air conditioners and heat pumps at 12 SEER. Three states — Connecticut, New York, and Vermont — have filed a challenge in federal court to keep the standard at 13 SEER.
Contractors familiar with oil-lubricated compressors may want to start thinking magnetically. Turbocor, from Montreal, PQ, Canada, is introducing a compact centrifugal compressor that uses magnetic bearings and variable-speed drives to deliver what the company claims to be better efficiencies than conventional oil-lubed recips, scrolls, and screws.
“Yes, the economy will continue to grow,” pronounced Martin Regalia, Ph.D., who spoke at the Gas Appliance Manufacturers Association’s (GAMA’s) 67th annual meeting. In fact, Regalia believes that, short term, the economy is poised for a growth rate of more than 3%.
As the cooling season approaches, Nate and Ace are switching gears, performing cooling start-ups and changing out components. While on their first call, a condensing unit replacement, the discussion turns to the required refrigerant handling techniques and proper system maintenance.
Zoning is a powerful tool for providing comfort. Distribute conditioned air where you need it, when you need it there. However, “What do you do with the ‘extra’ air?” This question has confused contractors, produced unsatisfactory installations, and sometimes given zoning a bad name. Joe Ramunni of Arzel® Zoning Technology says, “The answer is to understand the dynamics of airflow and address the cfm issue proactively.”
A whole new carrot is dangling in front of hvacr contractors, with the promise of millions of dollars in new business — that is, if you believe the prognostications of Melinda Ballard, president of the Policyholders of America.
The Healthy Indoor Environments (HIE) 2002 conference officially kicked off with a “State of the IAQ Industry” discussion conducted by representatives from the business, political/regulatory, legal, and consumer/insurance sectors.
Over the years, some contractors have carried a negative perception of zoning.
Honeywell is looking to dispel some of these myths, and one way is through zoning seminars. They aim to inform contractors about the benefits and facts of zoning.
Zoning in commercial applications is nothing new. But manufacturers and contractors are working on ways to take this beneficial system and reap even more rewards from it. One such example is the work Lennox International has been involved with in Canada.