Eliminates compressor
High energy efficiency
Low energy efficiency
Current drawn is high
Hand shut off valve
Automatic expansion valve
Thermostatic expansion valve
Thermal electric expansion valve
Weighing method
Dial a charge method
Suction pressure method
Sight glass bubbles method
Suction tube
Copper tube
Capillary tube
Discharge tube
Higher cost
Noisy operation
Silent operation
Needs more space