To work effectively, the system needs a compressor, condenser, evaporator, capillary tube, thermostat and sealed refrigerator box so the temperature can be controlled. If any one of these parts is ...

In the 1930s, refrigerator sales were booming ... and the original “Monitor Top” sealed unit. The first unit to use a capillary tube (made of brass tubing) was also top mounted. Quite a few ...