In this video, you will learn how flame sensors operate, and how to maintain them in a gas heating system.

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This video showcases the proper way to inspect a primary and secondary heat exchanger on a condensing furnace in the field. This method can also be done on non-condensing furnaces as well. This is an important part of any heating system inspection and/or service calls as well.

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In this technical video, we will show you how to properly diagnose and troubleshoot common problems with igniters and flame sensors on gas-fired equipment.

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We will show you the importance of airflow on the coils and what types of problems are associated with airflow. We will look at indoor evaporator coils and outdoor condensing coils.

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Start-assist kits (hard starts), assist compressors in starting and reduce the starting current of the compressor. This video breaks down the process of checking and replacing these on a system.

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In this video, we will demonstrate how to properly inspect, diagnose, and troubleshoot a PSC compressor on a system in the field. On average, most compressors that get turned in for warranty are not even bad. It is extremely important to diagnose compressors properly. In this video, we will show...

This video will show you how to properly neutralize the acid in a refrigeration system and flush the system with an r-11 flush kit. This procedure should be done any time a system has acid in it, or when a compressor has been replaced due to a burnout.

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We will walk you through an introduction to the electric heating element and the components that make it up.

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In this video, we will show you how to correctly test and replace a 120-volt power switch for a gas furnace.

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In this instructional video, we are going to demonstrate how to replace a heat exchanger on a condensing furnace.

Learn more about NexTech Academy's HVAC curriculum at https://www.nextechacademy.com

Checking incoming gas pressure along with checking the manifold gas pressure on a gas-burning appliance is a task all HVAC technicians need to know. We will be discussing this in detail in this video.

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In this video, we will demonstrate how to properly diagnose a bad gas valve on a standard furnace you would encounter in the field.

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Replacing compressors is a huge task for an HVAC service technician. Here, we will demonstrate how this complex task is done on a system in the field.

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Here, we will discuss how to properly troubleshoot and replace a thermostat on a system in the field.

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For this video, we will show you the best practices of how to troubleshoot and replace a condenser fan motor on a condensing unit or heat pump system in the field.

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Here, we will show you how to correctly diagnose and replace an induced draft motor on a standard furnace. These same principles are used on induced draft boiler systems as well.

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We will show you a step-by-step procedure of properly troubleshooting and replacing a PSC blower motor in a standard gas furnace. Troubleshooting ECM motors are in a separate video.

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In this video, we will be discussing the different troubleshooting methods for diagnosing problems with relays, sequencers, and solenoid valves.

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Beyond the troubleshooting techniques shown in this video, you will also learn how to select and install a universal control board for a gas furnace.

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Here, we will discuss the different contactor types you will run across in the field, along with how to test and replace these on air conditioners and heat pumps.

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Run capacitors and PSC blower motors are still a very common motor to run across as an HVAC service technician. In this video, you'll see a step-by-step process of how to accurately test and replace run capacitors on PSC blower motors.

We will show you how to replace a reversing valve on a heat pump system and share tips on how to easily perform this difficult task.

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Here, we will show you how to install and repair flexible ductwork on a system in the field.

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In this video, we will show you the basics of how to recover refrigerant from a system, pressure test it when a repair or installation is performed, and evacuate it to a proper vacuum.

Interested in learning more about NexTech Academy? Visit https://www.nextechacademy.com