Measure TESP in HVAC Two-Piece Air Handlers

What makes modular or two-piece different from their single-piece cousins when it comes to measuring total external static pressure (TESP)? In this article we’ll examine the differences and discuss how to measure TESP correctly. “As-Shipped” The “As-Shipped” idea is helpful when measuring the TESP of two-piece air handlers. So, what do you find when you …
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Testing HVAC Static Pressure

I hear a lot of reasons for taking static pressure measurements on every service call. One of the most common is that it takes too long — there isn’t enough time on a call to do it. Let’s face it, technicians have a lot of responsibilities and measuring static pressure adds to them. What if …
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Challenge is measuring static pressure on a variable speed fan

Measuring static pressure on air handling equipment that has variable-speed fans can be a challenge to both new and experienced technicians. By addressing a few details, your readings will be consistent when you encounter this blower type. Let’s look at three tips you can use the next time you measure static pressure on a variable-speed …
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Blood Pressure Monitor

When replacing HVAC equipment, better service companies offer duct upsize and system performance upgrades as an option to their customers. These upgrades allow the duct system to perform closer to the level of efficiency claimed by the equipment manufacturer. Let’s take a look at the steps necessary to effectively upsize a residential duct system. Why …
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Kinetic Energy is Energy in Motion

The use of energy is what drives an HVAC system. Many of us remember learning about potential and kinetic energy in high school and wondering, when will we ever use this stuff? The truth is potential and kinetic energy are both forces we either ignore or apply in our professional and personal lives. Let’s examine …
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With the end of the heating season there’s a tendency to forget the dangers of carbon monoxide (CO). As you transition to the cooling season, be sure to keep your awareness for CO high even though it’s likely to be the last thing on your mind. Let’s look at five summer CO issues you should …
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HVAC Air Filter Media

If you’ve been in the HVAC industry for any length of time, you’re familiar with complaints involving dust and dirty equipment. As a result, most technicians target the air filter first when they receive such calls. As you investigate these problems, keep in mind how the following ways reduce filtration effectiveness so you can more …
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Notime for webinars? Bah Humbug

Doesn’t it seem like you are constantly being invited to attend webinars on every topic under the sun? They range from product announcements to how to do something, why you should do something, and more. Is it to the point where you just skim past those invitations or just delete them out of hand? Even …
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Changes are coming. If our President-Elect remains true to his campaign promises, bolstered by a business-friendly congress, we could see a very positive environment in 2017 for small businesses — i.e.  HVAC contractors. Of course, we should take campaign promises with a grain of salt, as we know politicians will usually say anything to win …
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Carbon Monoxide - What to Look For

Analytics — why are they so doggone important? To answer that, we need to know the terms and references required to understand marketing analytics, whether you are doing it by yourself or using a third-party web management person/team. Looking at analytics without knowing or understanding what you’re seeing is just like looking at your P&L …
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