New HVAC Training Book, Refrigerant Charging & Service Procedures 2nd Edition!!
0:37
2nd Edition Refrigerant Charging & Service Procedures Paperback!!
22:15
A2L Refrigerants R-454B and R-32 Explained! Bottles, Changes, Rules, Tools!
21:05
Air Conditioner Troubleshooting! Connecting, Measuring, Fixing, Disconnecting!
7:04
Bolton has theory on why Trump threatened Russia with sanctions
19:06
R454B Vs. R32, which is better? Not what you THINK!
1:20:49
Gas Furnace Training Class! Basics, Operation, Components, Troubleshooting
14:14
Explaining Superheat and Subcooling to Your Apprentice!
41:45