The Thermostatic Expansion Valve (TEV) has become the refrigerant metering device of choice for most HVACR manufacturers in the past decade. Over time, countless valves have been needlessly replaced because of low airflow affecting their operation. A basic understanding of TEV operation helps tie the effects of low airflow to proper operation of the valve. …
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It is often taught that to diagnose a restrictive air filter is as simple as a visual inspection to see if it’s plugged. Then, if the filter is dirty, replace it. Once this obvious defect is fixed, everything is assumed to work correctly. Could there be more to it? What if the new air filter …
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You know, you just can’t win. For decades the U.S. government, through the auspices of the Energy Efficiency Act, the Department of Energy, and even the Environmental Protection agency have worked tirelessly with electric and gas utilities and the consuming public to become more energy conscious and consume electricity more efficiently and economically. In the …
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It’s in the books: the first Republican debate on the road to the 2016 presidential elections. As a native of Cleveland, I want to say how proud I am of this city and its people. Commentators said that the Cleveland audience was one of the most demonstrative in the last three election cycles. How cool …
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Energy efficiency is like the never-ending story with the U.S. Dept. of Energy (DOE) and the current administration’s non-stop push to squeeze ever more out of the HVAC industry. Yes, ladies and gents, the efficiency dance continues still, with members of Congress FINALLY getting into the act. Here’s the rundown: on June 8th, 121 members …
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OK, so for those who know me, they know that since before college I fell in love with all things “techie” – and that was so long ago that the word “techie” didn’t even exist. Back in the late 1960s and 1970s, the tech was all things stereophonic – receivers, amplifiers, turntables, eight track and …
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