Max Marquez demonstrates single-pole and double-pole HVAC contactors and discusses how clicking or rattling sounds may indicate a problem. This participant demonstration was recorded during the September–October 2026 HVAC Technical Academy workshop in Sanford, Florida.
Jacqueline Baez explains the purpose of HVAC capacitors, identifies the terminals on a dual run capacitor, and demonstrates how to test capacitance using a multimeter. This participant demonstration was recorded during the September–October 2026 HVAC Technical Academy workshop in Sanford, Florida.
Dwayne Dukes demonstrates how HVAC heat strips work, why they can produce a burning smell, and how technicians test and replace them. This demonstration was part of the HVAC Technical Academy September–October 2026 workshop in Sanford, Florida.
With safety on our minds and hands-on experience in our heart, a few rules need to be addressed:
* Water plus electricity can cause shock, short circuits, or damage equipment
* When moisture is around, techs must keep tools, meters, recovery machines, pumps, and all electrical connections dry
* Never stand in puddles which troubleshooting
* Keep hoses and refrigerant connections clean and protected from water
I know the above listing is common sense, but sometimes it is nice to get a refresher or two.
The HVAC refrigerant recovery process involves setting up equipment, purging air from hoses, activating the recovery machine to pump refrigerant into a dedicated recovery cylinder, monitoring the process, and then safely shutting down and storing the cylinder.
Recovering refrigerant is required when an EPA Universal Technician performs a major operation such as:
* Replacing a compressor
* Replacing an evaporator or condenser coil
* Opening the sealed system
* Repairing a leak
Welcome to the world of HVAC where accidents happen. In truth, cuts and bruises are part of the game, thus PPE is always stressed.
Personal Protective Equipment, though oftentimes a bit uncomfortable, is essential when it comes to safety. Items such as gloves, safety glasses, boots, and flame-resistant clothing (when required)