Over the years, as the number of employees increased at J & J Air Conditioning Inc. in San Jose, CA, owner Jerry Hurwitz felt a need to keep his mechanics up to date and on the “leading edge.” Hurwitz put his love of education and his years of professional teaching into practice by developing a series of in-house training classes. This eventually led to the establishment of Air Conditioning Instructional Research (AIR) in 1983.
How would you like to have to pay the Environmental Protection Agency (EPA) $10,000 just for having a large piece of mechanical refrigeration equipment running on R-22 — even if it wasn’t leaking?
For a number of years, advocates of chiller change-outs away from CFCs have bemoaned the slow pace of the process in the United States. And it appears that the same situation exists in Canada as well.
When some European countries made the move away from HFCs, they maintained that carbon dioxide could be a viable refrigerant. Now CO2 is gaining a practical foothold in the United States.
Capillary tubes are generally used as the metering device on small, fractional-horsepower refrigeration systems. Charging these systems with refrigerant requires a different procedure than those systems using a thermostatic expansion valve.
R-410A has been called the air conditioning refrigerant of the future and the long-term HFC replacement for R-22. But 410A is also turning up in refrigeration applications. One example is an ice rink in the Netherlands.
What would an industry association meeting today be without a discussion about mold? At the Air Conditioning Contractors of America’s (ACCA’s) recent conference, a seminar titled “What Today’s Hvacr Contractor Needs To Know About The Mold Issue” drew an overflow crowd of anxious contractors thirsting for knowledge and answers.