So many techs are OBSESSED with how to set the charge rather than understanding all of the readings, specs, and system conditions that go into optimum system performance. Before “setting the charge,” I suggest (nay, I REQUIRE) that you do a full visual inspection of the system, have an understanding of the initial factory charge […]

As we have mentioned in several previous articles (such as this one HERE), many blended refrigerants have glide, which simply means they boil and condense over a range of temperatures instead of just one temperature. As an example, consider refrigerant R407c. It is a zeotropic blend, which means it has enough glide to make a […]

This article is part 4 of a 5-part series on troubleshooting by Senior Refrigeration and HVAC tech Jeremy Smith Ok, so we've got our data scribbled and scratched out on paper. Maybe a bit of grease, dirt, and oil, too, if you're doing things right—blood if you're doing it wrong. Now, time to take a […]