Are you a member of an HVAC trade organization? I’m talking about the ones you have to pay dues to belong to. If you don’t, think about something that Benjamin Franklin once stated: an investment in knowledge pays the best interest. Seems reasonable, right? Yet it occurs to me, in the HVAC contracting world, the …
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Heat Transfer explained

or So what exactly is combustion energy and heat transfer anyway? This article is based on more than 30 years of field testing, measuring, and auditing equipment performance. Although some of the information requires interpretation, it’s still based on proven field performance. What is Combustion Energy? Combustion is the burning of some kind of fuel …
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Measuring static pressure

Like blood pressure in humans, static pressure impacts HVAC systems, positively or negatively, depending on what that pressure is. We all know that high or low pressure is bad for human health. The same is true when it comes to building static pressure as well. Taking a building’s static pressure lets you “see” the HVAC …
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What if you could offer your customers a system efficiency option of 57%, 78%, or 93%? No, this is NOT equipment-rated efficiency. It’s the operating system’s field-measured efficiency after installation and verification in a home. Here’s a sample proposal of the future. Field Measured System Efficiency Constant advancements in our ability to field measure the …
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When I was a kid, I didn’t know what my beliefs were, so I had a habit of constantly asking why. I questioned my mom and dad repeatedly on the things I didn’t understand. They patiently answered my questions and encouraged me to keep asking. If you’re a parent, you’ve no doubt experienced this with …
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Picture yourself troubleshooting the following CO call and think about the pattern that’s followed. Remember, you’re going to be the hero on this call! The Call Long-time customers of yours, the Smith family, have recently moved into a new home. The previous homeowners replaced their old furnace with a direct-vent 90% efficient condensing furnace before …
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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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In the world of business, marketing and selling to existing customers is more important than ever. Today it’s even more affordable than before because the Internet acts like the rising tide – it floats all boats, no matter the size. In other words, it equalizes a business’ marketing reach, no matter how large or small …
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US Energy Policy 2015

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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