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Carbon Monoxide: What Do You Know? Four Package Unit Inspections That Expose CO Safety Issues

Most HVAC technicians don’t think about CO (carbon monoxide) while they’re working on a package unit in 90°F heat. They know that getting the cooling back on is the top priority. However, as a professional technician, don’t forget that health and safety are also top priorities. Here are some quick checks you can do with your summer service procedures that could expose potential CO safety issues. Let’s look at four inspections that may reveal hidden… Read More

Carbon Monoxide: What Do You Know? Duct Connections that Kill Airflow and Heat Exchangers

In the middle of the summer heat, you probably aren’t thinking much about cracked heat exchangers. However, airflow is essential year-round in our industry. If you encounter systems with low cooling airflow, chances are high you also have messed up heating airflow. David Richardson, NCI Trainer Low airflow through a furnace forces it to operate outside of manufacturer specifications. The heat exchanger overheats and may lead to premature equipment failure. Let’s look at some issues… Read More

Carbon Monoxide: You Can Help Improve Community Carbon Monoxide Awareness

Carbon monoxide (CO) incidents hit Texas families hard during the winter storms this past February. There are heartbreaking stories of families using unsafe heating methods to stay warm. The aftermath includes 11 deaths, 1400 emergency room visits, and other unknown long-term issues. David Richardson, NCI Trainer Most people are unaware of CO poisoning. They don’t know what causes it, the sources, or what to look for in their home. They don’t think it will happen… Read More

Carbon Monoxide: What do you know? – One Reason Heat Exchangers Rust

By David Richardson David Richardson, NCI Trainer Have you ever wondered why some heat exchangers rust while others remain spotless year after year? One overlooked reason could be flue gas. Let’s look at what heat exchanger rusting can reveal and why it’s happening. Visual Signs of a Bigger Problem Our industry has blamed heat exchanger rusting on everything from contaminated combustion air to high humidity levels. While these issues must be addressed, they aren’t… Read More

Carbon Monoxide: Leaking Gas Valves

By David Richardson With the floods affecting central Kentucky right now, I thought it would be a good idea to revisit what happened here over 20 years ago. During that event, some HVAC technicians cleaned out water-logged gas valves as they tried to get furnaces running again. I’m sure many of you are shaking your heads since you know those valves could fail in the open position, spewing gas into the equipment and building. Read More

Carbon Monoxide: The Importance of Light-Off CO

By David Richardson Many technicians who work on fuel-fired equipment will admit they have scorched their eyebrows when watching a burner light. It is a rite of passage among most seasoned technicians. What if there was a safer way to check ignition instead of sticking your face in front of a burner? Fortunately, there is, and it involves using a combustion analyzer. Anyone who has had the flame roll out or the doors… Read More