In a series circuit (loads connected in a row end to end), it's easy to calculate total circuit resistance because you simply add up all the resistances to get the total. In a parallel circuit, the voltage is the same across all the loads; the amperage is simply added up, but the resistance is a […]

This article was written by my good buddy, Bill Frisbie. Bill is a service manager and crack technician at AirFx, a Trane dealer in lovely Inverness, Florida. Thanks, Bill! One of the most intimidating things in the field is to walk up to a piece of equipment that you have either never worked on or […]

Swaging copper is one of the most common practices in our trade when it comes to brazing pipes. Yes, it sometimes makes more sense to slap on a coupling or street ell fitting, but most of the time, cutting your braze joints in half is much easier and faster during an install or repair.  So, […]