History, they say, repeats itself. The HVACR industry is not immune to the truth of this saying. A good case in point was the introduction of R-410A earlier this century, compared to the introduction of R-22 in the 1930s.

We all create our own individual histories every day. At the same time, we become part of a larger history. With that in mind, we asked a few industry colleagues what the most significant changes were that they have witnessed in the HVACR industry.

Honeywell has announced that Bitzer has approved the use of HFC-407F (marketed by Honeywell as Genetron® Performax™ LT refrigerant in North America) as an HCFC-22 retrofit solution for medium-temperature systems, such as supermarket refrigerated cases.

In 1926, F.M. Cockrell started Business News Publishing Co., now BNP Media, in Detroit. The first issue of the Electric Refrigeration News, now The Air Conditioning, Heating & Refrigeration NEWS, had a publication date of Sept. 11, 1926. It was created to help recognize the importance of the expanding electric refrigeration market.

It is one thing to install efficiently running refrigeration equipment. But it also has to be energy efficient – according to a wide range of standards. That’s why Emerson recently issued a white paper called Status of Energy Regulations for Commercial Refrigeration Equipment.

The increased use of high pressure refrigerants has created new challenges for technicians, yet it is still possible to perform high speed recovery of high pressure refrigerants. The tips and practices in this article will help keep your refrigerant recovery speeding toward the finish.

Once every three years, the International Institute of Ammonia Refrigeration ups the ante within the expo portion of its annual conference by calling the expo a Heavy Equipment Show and including some especially large pieces of equipment. The most recent show in Orlando demonstrated the wide product range.

The U.S. Department of Energy (DOE) has published a final rule establishing federal test procedures for walk-in coolers and freezers. In the rule, DOE adopted by reference Air-Conditioning, Heating, and Refrigeration Institute (AHRI) Standard 1250 (I–P)–2009, ‘‘Standard for Performance Rating of Walk-In Coolers and Freezers.”

HVACR contractors who do work in the hotel-motel sector probably know it already - there is what has been described as “fundamental contradictions of sustainability in the hospitality industry.” For example, there may be a lot of talk of going green, but that may not mean action.

When Stop & Shop was looking for ways to incorporate sustainable technology into its new multimillion dollar West Hartford, Conn., store, it focused on energy savings and a reduced carbon footprint. In fact, the store, which opened in December 2010, is a 38,000-square-foot model of sustainability.