The big push is on to replace R-22 unitary air conditioners and heat pumps, and it looks like the industry has really and truly decided that R-410A systems are “it.” This article offers an overview of some of the issues related to R-22 and -410A in the field: operating pressure differences, oil characteristics, and temperature glide.
When unitary heat pumps and air conditioners using R-410A were introduced to hvac contractors, many were skeptical. They had been working with R-22 systems for so long, the change seemed unreal. As recently as last year, system manufacturers themselves, though pleased with the new refrigerant’s efficiencies, were hesitant to comment on how contractors were adapting. This year they are speaking out, and the news is good.
The potential for energy conservation and resulting cash savings continues to fuel the growing popularity of variable-frequency drives (vfd’s) in hvac installations. Realizing that potential, however, has often proven elusive, due to the inherent dependency for success on proper placement of the pressure feedback transmitter in the air- or water-distribution system.
Charlie Elliot needed some marketing advice for his Sault Ste. Marie, MI, hvacr business. The president of the Michigan ACCA Chapter asked the marketing department at a local television station to develop a plan.
A new summer is fast approaching — and the advent of summer brings us to another season filled with air conditioning opportunities.
The most basic opportunity from which many more can sprout is the “Precision Air Conditioning Tuneup.”
John Sedine and son Aaron of Lowing Heating & A/C of Grandville, MI, demonstrated the functions of Right-Suite design software from the Wrightsoft Corp. (Lexington, MA) to a roomful of attendees at the MIACCA convention.
A big fear of consumers and business owners alike is applying for a personal or business loan. Anthony Palumbo of North County Bank & Trust, Traverse City, MI, explained to MIACCA Conference attendees that there are ways to alleviate those fears.
Has your traditional a/c service and maintenance work been in a slump? Are qualified workers hard to find? If you live in an area with a lot of residential evaporative cooling systems, you may be able to lessen both problems at once.