With Measure & Charge (MAC-134) and EZ Charge (SD-134), dispensing refrigerant is as simple as pressing a button. You just connect the hose to the low-pressure port, press the button on the can to fill (to "charge") and release to stop. With Measure & Charge, releasing the button will automatically give you a pressure measurement on the in-line gauge (which is re-usable). Both let you store unused refrigerant for later. Both contain the appropriate proportions of refrigerant and oil, as well as System-Safe leak sealer. See full instructions on this site or on the can.
With the Quick Charge charging gun (QC-1CS and QCK-2CS), you simply connect the hose to the low-pressure port, screw a can of refrigerant into the Quick Charge, squeeze the trigger to dispense and release to stop. Quick Charge will automatically give you a pressure reading on the built-in gauge. Quick Charge is completely re-usable. See full instructions on this site or on the package.
Direct Charge Dispensing
With High Mileage Top-Off (HMT-1DC), you simply press the direct charge fitting onto the low-pressure port to fill 6oz. of refrigerant & oil (in the proper proportion). Great when all you need is a small amount of refrigerant to top off your system. We recommend using our EZ Gauge (GEZ-1) to measure pressure before and after charging to ensure proper pressure for peak cooling. See full instructions on this site or on the can.