Videos

Many problems that occur during installations stem from poor duct design. Ductwork requires a lot more thought and planning than just using ACCA Manual D. Duct sizing is important, and HVAC systems often lose efficiency to takeoffs and return drops that are too small; Michael and Neil like to make the ductwork as large as […]

Ed has over 35 years of HVACR experience, both in the field and through teaching. He has lived and done business in New Jersey, which has a variable climate, and he has experienced a wide range of temperatures. When designing ductwork, we obviously want our static pressure to be close to our calculations. However, lower […]

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 […]