In this course, you’ll learn the fundamentals of commercial refrigeration systems. You’ll be introduced to the refrigeration system components and how they operate. You’ll recognize the different types of available commercial refrigeration systems and their business applications. Finally, you’ll identify the most common types of failures for each system and how to diagnose them.

Have you ever had an interest in knowing more about exhaust fans and how they operate in the commercial HVAC system? Well, this is the course for you. In this course, you'll learn what exhaust fans are and their function in the commercial HVAC system. You'll then be introduced to different types of exhaust fans. You'll learn about the components of different types of exhaust fans. Lastly, you'll be introduced to how exhaust fans operate in the commercial HVAC systems.

In this introductory course, you'll learn what fluid cooling towers are and how the components function to reject and absorb heat. You'll learn about the difference sections and the cleaning and chemical treatment requirements of cooling towers.

In this course, we will introduce you to residential gas piping and the basics of fuel gas in a residential setting, from the point that it enters the home up to the control valve serving individual appliances. We will orient you to the two main kinds of fuel gas – natural gas and liquid propane gas – their basic characteristics, where they come from, and how they are typically distributed to homes. We will identify the very serious risks of gas leaks and how to spot and respond to danger. We will outline key safety codes and best practices that can help you prevent danger in the first place. Finally, we will introduce the basic methods and materials of pipes, tubes, fittings, pipe support and protection, and pipe sizing.

This course is designed to cover the top 17 changes published in the latest edition of the NEC. Keep in mind, not all states immediately adopt the latest edition of the NEC. Always check with your local authorities which will have the jurisdiction to confirm which edition of the NEC your state or county is enforcing.

In this course, we'll cover everything you need to know to identify and fix faulty components in a PTAC, including the control board, compressor, heater, transformer, and more. Whether you're dealing with a PTAC that won't turn on, a unit that's not heating or cooling properly, or any other issue, we'll show you step-by-step how to troubleshoot and repair the problem.

This course will introduce learners to basic power tools required for residential and commercial plumbing work across various tasks. We will orient you to their basic characteristics, when they are used, and how they are utilized on the job site. We will identify tool users' health and safety risks and how to ensure safety procedures are followed. Finally, we will identify key plumbing tasks and the tools best suited for each.

In this course, we learn how to diagnose and repair common faults in the rack and cases of a parallel rack refrigeration system. We learn the symptoms of the most common failures. We get hands-on experience diagnosing and repairing those problems using a 3D simulation program. We learn a repeatable and reliable troubleshooting process. We learn the common risks of rack system and case repair, so we can fix problems safely.

Commercial kitchens rely on upblast exhaust fans to remove grease and smoke from the building. Exhaust systems reduce the risk of fire and improve air quality in the building. To follow local regulations businesses must schedule routine maintenance for their exhaust fans. In this course we learn what maintenance activities a technician should perform on an upblast exhaust fan. We recognize the most common signs of wear and tear and what steps to take to prevent them from growing into major problems. We learn the safety risks of working on upblast exhaust fans and the steps that a technician must take to stay safe. We apply the concepts we learn by conducting various maintenance and repairs on a virtual exhaust fan.

A well-working exhaust fan is essential to the functioning of the entire CHVAC system. Fans are one of the most reliable components of a CHVAC system. Still it's important to have an ongoing schedule of preventive maintenance for exhaust fans. In this course we will learn the maintenance that a technician should perform on a centrifugal backward inclined exhaust fan. We will learn to recognize the most common signs of wear and tear and what steps to take to prevent them from growing into major problems. We will learn the risks of working with fast moving blades and high voltages and what steps the HVAC technician must take to stay safe. We apply the concepts we learn by conducting various maintenance and repairs on a virtual exhaust fan.