He then dives deeper into testing heat pumps when it’s cold outside – checking charge, what to look for in terms of frost and ice buildup, abnormal signs, and more. Bert shares manufacturer charging charts, rules of thumb for pressures, and how to accurately check charge using a charging jacket. Additional topics include:

• Normal coil frost vs ice-bound coils
• Defrost cycle
• Cooling and heating cycles
• Reversing valve function
• Checking the charge in heat mode
• Accurately reading discharge temperatures
• Approach method
• Temperature split

As always, Bert peppers the lesson with real-world stories and examples from the field to drive home key points. The video strikes a perfect balance between technical knowledge and practical application. Whether you’re a seasoned pro or just getting started in HVAC, you’ll learn valuable skills from one of the industry’s most engaging teachers. Join Bert and the Kalos staff by watching “Heat Pumps – Preparing for Heating Season Part 2”!