Videos

In this class, Bryan teaches the Kalos techs about breakers, wires, fuses, and overloads. The practices associated with these components can be a bit controversial in the HVAC industry, so we look at these through the lens of NFPA 70 (National Electrical Code/NEC). The wire sizing guide can be found in NEC 310.15 Table B-16, […]

Mindset In today's live stream, Eric Mele, Chad, Corey, and Bryan cover the mindset, steps, and best practices required for HVAC installation. Chad and Corey are some Kalos apprentices who have done quite a few HVAC/R installations over the past few years. When approaching an installation, allow yourself enough time to understand the full scope […]

Impact of airflow In this class, Bryan teaches the Kalos techs about airflow and how it impacts system performance. He explains the factors that affect airflow and how those contribute to the overall state of an HVAC system. We use training equipment and MeasureQuick to demonstrate these concepts. On a typical no-cooling call, many techs […]

Techs often make mistakes when stripping wires. When you strip a wire by wringing it with your stripper’s jaws, you can nick the wiring. Generally, you’ll want to make a small split in the casing and gently use your wire stripper to pull back on a conductor you won’t use. That way, the casing will […]

If you work with negative people, let them be miserable by themselves. The best way to deal with them is to ignore them while you're working. Instead of focusing on shared complaining, try to focus on the common goal of getting work done. Moreover, you can avoid contributing to a negative environment by leaving work […]

The fan motor connects near the top of the condenser unit, quite close to the fan blade. In this video, Eric uses an attached metal flex connector to route the wires away from the fan. He has also removed the flag terminal ends, as they had worn out and made a lousy connection. Eric loosens […]

The goal of the refrigeration circuit is to move heat around; it absorbs heat from a space and rejects it somewhere else via the refrigerant. We maximize the amount of heat absorbed by allowing the refrigerant to undergo phase changes (liquid and vapor). Many technicians add or remove refrigerant whenever the system does not work […]

The first tool is a hand boiler. The hand boiler has a bottom bulb with ether alcohol. When you hold the bulb, the liquid rises to the top and may bubble. That occurs because your hand transfers heat to the ether alcohol, and the molecules begin moving more rapidly, creating more pressure in the closed […]

Recovering It is a good idea to recover for a bit before turning the recovery machine on. On the machine, you will see the input and tank pressures start to equalize. Some units, like the Fieldpiece MR45, can be throttled. When the machine starts, the tank pressure will rise a bit and pull the refrigerant […]