How do HVAC surge protectors work? What sorts of electrical events do they protect HVAC systems from? Does every HVAC system need one? What is undervoltage protection? In this article, we will cover the basics of surge protection and help you determine the best use cases for the various options available in residential applications. […]

Jesse Grandbois is one of the techs who reads the tech tips, and he wrote a few tips that he wanted to share on some gas furnace control basics. This tip is about the basic terminal designations on a typical 24v gas valve. Thanks, Jesse! Have you ever noticed the TH/TR terminal on a gas […]

Every gas furnace data plate/tag has a specification for the temperature rise through that furnace. It is shown in a range like 50-80° or 45-75°. Those first two numbers are the lowest recommended temperature rise; the highest allowed temperature rise through the furnace is usually a 30° difference. When possible, we want to get the rise […]