HVAC Systems for Technicians That Quietly Fail in Real-World Conditions - Jamie Kitchen Part 1

HVAC Know It All Podcast · Jul 2, 2026 · 21m

In this episode of the HVAC Know It All Podcast, host Gary McCreadie is joined by Jamie Kitchen, an HVAC expert, Training and Account Manager at Danfoss, to discuss refrigeration metering devices and how they control refrigerant flow. Jamie explains what a simple restriction is, how an orifice or piston works, and how flow is set by the size of the hole and the pressure difference across it. The conversation covers capillary tubes and why they self regulate through friction and flash gas, why cap tubes clog when a system runs hot, and why suction lines are sized larger than liquid lines. Gary…