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In this Introduction to Electrical Code course, you will learn about the National Electrical Code, which is a set of guidelines that covers the best ways to do electrical work in residential and commercial settings. This course focuses on...

Intro to Fire Safety and Portable Fire Extinguishers" is designed to increase learners’ awareness of the chemistry behind creating and eliminating a fire, the different classifications of fire, the most common fire hazards present within the...

This course is an overview of how heat pumps work and what makes them different from air conditioning. It covers piston type heat pumps and heat pumps with a thermostatic expansion valve.

Introduction to Mechanical Code is an overview of the International Mechanical Code (IMC) requirements for residential HVAC equipment installation. It focuses on plumbing, electrical and various other codes and industry standards used to properly and...

In this course, we’ll start off with a couple lessons that identify the various components of the appliances before we delve into the different configurations available and their actual operation. Washers and dryers may seem like simple appliances...

This course is an introduction to cold climate heat pumps and the advances in technology made to these units. In this course, you will learn the various types of heat pumps that are used in cold climates and the requirements a unit must meet in order...

An Air Handling Unit, or AHU, plays an important role in a commercial HVAC system. In this course, we cover the foundational information you would need to know when working with AHUs. Specifically, we will talk about what AHUs are, how they operate...

An electrical plan for a room or house can look like a super complicated maze of lines and symbols! So in this course, we break it all down for you. An electrical plan shows single lines for all the circuits, and symbols for receptacles, switches...

A pump is a device for lifting, transferring, or moving fluids by suction or pressure from one position to another. This course covers how pumps are used to move liquid--primarily water--through hydronic HVAC systems. You will learn the basic...

In this course, you will learn about parallel rack refrigeration systems. These are one of the most complex types of commercial refrigeration systems. You’ll learn about the application of large-scale parallel rack systems and what makes them a good...