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James Refrigeration Basics Quiz April 16, 2023, 7:25 pm
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Electric Heat & Blower Interlock
In residential air handler/fan coils, it is common to use a high-voltage interlock between the blower and the electric heat strips to ensure that the blower comes on whenever the heat is on. The problem is that it CANNOT work the other way around where the heat comes on with the blower. Heat strips are […]Read more
What Changes Will You Soon See With the Shift to A2L Refrigerants?
This article was written by Don Gillis, the current Technical Training Manager at Chemours. Don was also involved in a popular symposium session about A2L refrigerants with Jason Obrzut and Dr. Chuck Allgood, which you can now watch for free on our YouTube channel HERE. Thanks, Don! We all know that the change to A2L […]Read more
Get an EEV Open (Like Magic)
This tech tip comes from our contributor, compressor decapitator, and super tech Ulises Palacios. Many ductless systems and some high-efficiency unitary systems have electronic expansion valves. If you find one that is stuck closed, you may be able to get it open temporarily by putting a strong magnet like the one shown above on the […]Read more