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The Leading Edge of Maintenance | HVAC - Contactors

Learn how contactors in HVAC systems use a 24-volt coil to control power flow, how they operate to supply 240 volts to compressors and fan motors, and common failure causes like obstructions or arcing. Understand how sealed contactors protect against...

The Leading Edge of Maintenance | HVAC - Contactors (Spanish)

Aprende cómo los contactores en sistemas HVAC usan una bobina de 24 voltios para controlar el flujo de energía, cómo funcionan para suministrar 240 voltios a compresores y ventiladores, y las causas comunes de fallas como obstrucciones o arcos...

The Leading Edge of Maintenance | HVAC - Drier Filter

Understand the purpose of a B-flow dryer filter in HVAC systems to block water and dirt from the refrigerant. Learn the importance of proper installation direction and careful brazing techniques to protect the internal moisture and debris-catching...

The Leading Edge of Maintenance | HVAC - Fan Relay

Understand the role and testing of an HVAC fan relay, which uses 24 volts to activate and powers the fan motor with 240 volts (split as 120 volts per side). Learn to safely troubleshoot by checking voltage at the relay and testing the thermostat...

The Leading Edge of Maintenance | HVAC - Fan Relay (Spanish)

Conoce la función y prueba de un relé de ventilador HVAC, que utiliza 24 voltios para activarse y alimenta el motor del ventilador con 240 voltios (120 voltios por lado). Aprende a solucionar problemas de forma segura verificando el voltaje en el...

The Leading Edge of Maintenance | HVAC - Gauges

Learn about manifold gauge sets with high and low sides that measure pressure and temperature for refrigerants like R-22 and R-410A. Understand the importance of inspecting hoses for damage, using low-loss fittings, and protecting hoses from sunlight...

The Leading Edge of Maintenance | HVAC - Gauges (Spanish)

Aprende sobre los juegos de manómetros con lados alto y bajo que miden presión y temperatura para refrigerantes como R-22 y R-410A. Entiende la importancia de inspeccionar las mangueras por daños, usar conexiones de baja pérdida y proteger las...

The Leading Edge of Maintenance | HVAC - Heat Strip

Learn how electric heat strips provide warmth in furnaces and heat pumps, working as emergency or primary heat sources. Understand their components—contactor, thermostat, and fuse links—and how to test each for proper function and safety.

The Leading Edge of Maintenance | HVAC - Heat Strip (Spanish)

Aprende cómo las tiras eléctricas de calor proporcionan calefacción en hornos y bombas de calor, funcionando como fuente de calor de emergencia o principal. Comprende sus componentes—contactor, termostato y fusibles—y cómo probar cada uno para...