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Carbon Monoxide: Don’t Forget the Gas Oven

By David Richardson It’s hard to believe Thanksgiving is here. Many of us will eat too much turkey and then doze off after the meal. Consider this: is it possible another source is making you sleepy? How many of you plan to cook a turkey this holiday with a gas oven? If you are, how do you know it’s safe? Unless you test the oven to ensure… Read More

Carbon Monoxide: Three Reasons High CO in Flue Gas Should Concern You

By David Richardson One question I frequently hear is, “Why should high CO (Carbon Monoxide) readings in the flue gas concern me? They’re all going outside, anyway.” It’s a question I also asked myself before I understood the cause-and-effect relationships that make this so dangerous. Let’s look at three reasons high CO levels in flue gas should concern you. Number One: Building Infiltration It’s easy to assume flue gas… Read More

Carbon Monoxide: Where’s the Draft?

By David Richardson A condition that concerns many technicians is when they measure no draft pressure in a flue. The display on their draft gauge reads zero. Let’s look at three common reasons that draft pressure in a flue disappears and ways to determine what you’re dealing with. Reason #1: Building Depressurization Building depressurization is the most common reason for no draft pressure. Depending on the source, depressurization can occur randomly or continuously. The… Read More

Carbon Monoxide: Remembering Rudy

By David Richardson Our industry suffered a great loss on the evening of July 28th. Rudy Leatherman, a former carbon monoxide (CO) trainer with Bacharach, lost his life because of a tragic accident. Anyone who knew him could share stories of his enthusiasm, willingness to share, and positive attitude. Rudy was the teacher at my first CO and combustion training class sponsored by Bacharach in the late 1990s. Left to right: Rudy Leatherman, David Richardson… Read More

Carbon Monoxide: Three Important Combustion Analyzer Maintenance Tasks

By David Richardson In the middle of summer, most HVAC professionals don’t think about combustion testing. While I don’t agree with this mindset, I understand why many in our industry think this way. When it’s 90°F outdoors, the last thing you want to do is turn a furnace on. During this busy time, technicians don’t use their analyzers much. However, if you take a few precautions before the cooling season begins, you won’t have… Read More

Carbon Monoxide: A Look at Side-Wall Power Venters

By David Richardson Side-wall power venters are an excellent venting option for non-condensing, fuel-fired equipment. They are an alternative to consider when an existing flue is unfit to use or undersized. Often, as I discuss them in class, I find it is the first time some students have seen or heard of them. This caused me to wonder how many technicians never encountered a side-wall power venter. With that in mind, let’s look at… Read More
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