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David Holt
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Tech Tips written:

Thermal Balance Point vs. Economic Balance Point
The thermal balance point is the point at which a heat pump can move heat into the home at the same rate the home loses its heat. Above this point, the heat pump will not need any additional help to heat the home. But below it, the heat pump will need auxiliary heat with it […]
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A Field Guide to Conductors for HVAC Techs
HVAC work is never just “HVAC” work. One minute you're brazing copper, and the next you're troubleshooting a blown fuse in a disconnect or running a new whip to a condenser. Because our trade is so varied, you never know what you're going to find when you open a service panel or crawl into an […]
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Ohms/Continuity Basics
Some quick basics: An ohmmeter is used to measure the resistance to electrical flow between two points. The ohmmeter is most commonly used to check continuity. Continuity is not a “measurement” as much as it is a yes/no statement. To say there is continuity is to say that there is a good electrical path between […]
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Podcast guest:

HVAC Training Past, Present & Future w/ David Holt
David Holt with NCI returns to the podcast to discuss the evolution of HVAC training; we cover the past, present, and the possible future of training in the industry. In the past, we had a lot of hands-on training, whether it was one-on-one or in a traditional classroom setting. These learning practices remain beneficial today, […]
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AirFlow Testing as a Customer Service Tool (Podcast)
David Holt from NCI comes on the podcast to talk about airflow testing and its importance as a customer service tool for the HVAC trade. Charging and airflow are closely linked. Even though the charge may be correct, the system can't operate correctly if the airflow is off. For example, we can only get the […]
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