The chart above is from a Carrier heat pump, and it lists some common accessories. I have heard this common pressure switch (last on the list) called a low-pressure switch (because it opens on fall in pressure) and a high-pressure switch (because it's in the liquid line), but RARELY do I hear it called its […]

This tip was a COMMENT on the sensible heat ratio tip left by Jim Bergmann. As usual, Jim makes a great point; once you get the “sensible” capacity for a piece of equipment at a set of conditions, you can easily calculate a true target delta T. Another interesting thing you can do is use […]

Please note: There have been some legitimate questions about a few of the points in this article and the diagrams. While Justin Skinner is an experienced tech and totally qualified to write this article, we will be specifically looking into the question of the best location of the circulator pump and addressing the “point of […]