Coolzy – The small portable air conditioner

Coolzy is a small, lightweight portable air conditioner designed to be used anywhere you need cooling. Coolzy is just like a tiny refrigerator with a fan that blows cool air directly where needed.

How Coolzy Works

A mini compressor pushes refrigerant gas into a condenser heat exchanger where a fan blows air through the fins to cool the refrigerant gas so it condenses to a liquid. The liquid, still at high pressure, passes through a thin capillary tube or an expansion valve, reducing the pressure. The low liquid is squirted into a second heat exchanger called the evaporator. Here the liquid evaporates into a cold gas, cooling air flowing past the tubes. The gas, now warmer, passes back to the compressor where it is compressed once again.

Small portable air conditioners with an exhaust pipe seem at first to be simpler and more convenient. However, these mini ac systems perform far worse than split system air conditioners because they suck in cooler air from the room to absorb the heat and pump that air outside. Air has to come in from the outside to make up for the air pumped out, bringing heat and humidity with it. Even worse, the hot exhaust pipe radiates heat back into the room. Therefore, the net cooling effect is about one quarter of a split AC with the same electrical power. Don’t expect more than 3-4 degrees of room cooling.

Unlike other portable mini ac air conditioners, the small and portable Coolzy does not mix the cool air with the room air. Instead, the cool air is carefully focused on the user’s face and upper body, just where we are most sensitive. Therefore, a very small amount of cooling is much more effective at creating the sensation of comfort. Coolzy sends warm air from the back to the ceiling, just like a kitchen refrigerator or freezer. 

Coolzy is as close as we can get to the ideal mini portable air con, a really small portable air conditioner that provides comfort with very little electricity.