Demonstrates a ratchet-style tubing bender that bends copper HVAC line sets from 1/4" to 7/8", allowing precise bends like 90 degrees on installed pipes.

Shows how to fix a hole in a line set by carefully building up silver solder over the leak, creating a sealed “bridge” without needing a coupling—ideal for tight spaces.

Covers how to check if an HVAC outdoor unit is working properly. Learn how to verify power at the contactor, test compressor and fan motor activation, and use a jumper wire to diagnose issues with the thermostat or control wiring

Explains how the reversing valve in a heat pump works, how to test its function, and how to avoid damaging it during replacement. Includes tips for safely brazing and troubleshooting a jammed valve caused by copper debris.

Covers how to replace a Schrader valve without losing refrigerant by using a specialized removal tool. Explains the step-by-step process and how to manage system pressure during reinstallation.

Walks through how a straight AC system functions, including how the thermostat controls key components like the fan relay, contactor, compressor, and blower. Explains how AC and heat modes differ in operation and which parts activate in each.

Covers how to test and charge systems with a TXV using subcooling. Explains how to calculate subcooling and what ideal ranges indicate about system charge levels.

Explains how to test and charge piston systems using superheat. Covers how to calculate superheat and interpret results to assess refrigerant levels.

Covers brazing techniques for HVAC copper tubing, including bridging holes with silver solder and connecting mismatched pipe sizes by pinching and soldering.

Explains how to safely test a live HVAC contactor, including checking for 240V input/output and 24V control from the thermostat, with strong emphasis on safety practices.