Sophie Ashley is an HVAC Designer for Energy Vanguard. Prior to entering the HVAC industry, she amassed extensive experience in the construction industry, especially in framing and carpentry. She also serves as a field inspector who conducts blower door and duct leakage tests.
As the HVAC industry transitions to refrigerants with lower global warming potential (GWP), A2L refrigerants like R-454B are becoming more common. These refrigerants are classified as “mildly flammable” and require the installation of A2L leak detection sensors in many applications to ensure safety. While these sensors are essential for detecting actual refrigerant leaks, HVAC technicians […]
This tech tip is the final installment in our short series on using oscilloscopes to troubleshoot communicating systems. Imagine this scenario: you've got a refrigeration system acting up, and the comms network, whether it's LON or MOD-bus, seems a bit flaky. Let me introduce you to oscilloscopes—more specifically, a PC version called the PicoScope 2204A. […]
This tech tip about preventing heat illnesses covers information and resources from the Cleveland Clinic, the U.S. Centers for Disease Control and Prevention (CDC), the U.S. Occupational Safety and Health Administration (OSHA), and the National Oceanic and Atmospheric Administration (NOAA). HVAC School is NOT an official OSHA training resource, and although these safety tips are […]
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Sophie Ashley is an HVAC Designer for Energy Vanguard. Prior to entering the HVAC industry, she amassed extensive experience in the construction industry, especially in framing and carpentry. She also serves as a field inspector who conducts blower door and duct leakage tests.
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