What is an Orifice Tube?
Like most of the systems in your truck or fleet, the heating and cooling system is comprised of a complicated network of parts and components that all work together for the same goal — to make sure the temperature in your cabin stays exactly as hot or cold as you want it. The success of this system depends on the performance of every single part from the blower motor to the O-rings.
Because this system is so intricate, it can be easy to not understand everything about how it works. As long as that fresh, cold blast of AC comes on when you turn the truck on, that’s usually all that matters. But it’s also important to gain a better understanding of the small heroes inside your heating and cooling system, such as the orifice tube.