A digital multimeter displays a reading of 12.52, positioned in front of a blue car battery with red caps—a practical scene often found during HVAC technician training and troubleshooting sessions.
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111 Electrical DC Theory Plus

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Close-up of electronic components, including capacitors, a copper wire-wound inductor, terminal block, and heat sink fins on a circuit board—ideal visuals for HVAC technician training or HVAC continuing education online.
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112 Electrical AC Theory Plus

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A construction worker wearing a blue hard hat and gloves looks up at a building blueprint while standing indoors, possibly reviewing HVAC continuing education online materials, with ductwork and yellow walls visible in the background.
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113 Electrical Components

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A 3D rendering of an industrial electric motor with a metallic gold finish, cooling fins, mounting base, and a visible shaft on one end—ideal for illustrating components in an HVAC apprenticeship program.
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114 Electrical Motors

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A large glass office building at dusk, with several floors visible, each filled with illuminated offices and workspaces. Some desks are occupied by those studying for NATE certification prep or enrolled in an HVAC technician training program. Trees reflect in the glass facade.
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216 Commercial Building Lighting Systems

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A large, industrial white generator with black base, closed double doors, and a small window on one side—ideal for hands-on learning in an HVAC technician training program—isolated on a white background.
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217 On Site Generation Systems

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