You have seen the C terminal on a dual run capacitor before. You have also seen the C terminal on a compressor. It stands to reason that they would both connect together, right? They don't connect, and they aren't even related, at least not in the way you think. In both cases, the C denotes […]

Friction rate is a value located on a ductulator. We use it during the design phase of a duct system to predict the operating static pressure of a duct system. The challenge with friction rate is that it is often misapplied by folks using a rule of thumb (ROT). In order to apply friction rate properly, […]

There are three reasons why I don't like infrared thermometers for many HVAC tasks. #1 – The laser can be misleading The laser dot is just a point of reference, not an exact point where it is reading. Often the thermometer will read lower, higher, or over a MUCH wider area. Unless you are right […]