The TXV powerhead or power element is the part of the valve that sits on top of the valve to which the sensing bulb is attached. The powerhead provides the opening force for the valve by translating force from the bulb to a diaphragm in the element that forces the valve open. The sensing bulb […]

This article is the second in a series on boiler basics by senior boiler tech Justin Skinner. Thanks, Justin. There are many types of boilers that do many different things, but almost all of them have some of the same basic components. It's partially because regulatory agencies require them, and other times, it's because they […]

We've been pretty spoiled in residential and light commercial in the USA because we haven't needed to deal with glide much. R22 has no glide, and R410a is a near-azeotropic blend, which means it has almost no glide. The days of being able to ignore glide are coming to an end. Carrier has announced their […]