How the Auto Evaporation Function on an Air Conditioner Works

Air conditioning is a popular option for cooling down during the summer heat. Air-conditioning units come in a variety of sizes and costs.

Cool air conditioners can cool the entire house. Window air conditioners are another option, which cool the room in the closest.

Another option is portable air conditioners, which may offer an auto-evaporation function.

Portable Air-Conditioner Features

The portable air conditioner is similar to a small space heater. These air conditioners work in the same manner as larger window types.

The air conditioner is surrounded by hot air. The air conditioner's components remove moisture from the air and cool it for release into the room. A vent is positioned close to a window that allows hot air to escape.

Auto Evaporation

Self-evaporation can also be called auto evaporation. This feature allows portable air conditioners to recycle residual moisture from the air, eliminating the need for removing it with a bucket or drainage hose.

The moisture from the air flows across the coils of the air conditioner, cooling them. Any moisture left behind is vented through the exhaust to evaporate.

You don't have to empty the cooling unit's water tray. Instead, you can use one of the fully self-evaporating portable conditioners.

These units do not need to be drained often. These units have an internal condensation exhaust which expels moisture during cooling and dehumidification. Through a hose, this water vapor and the hot exhaust air are released to the outdoors.

A self-evaporating portable air conditioner has many advantages, as we will discuss in the next section. Before you choose the right unit, there are a few things you need to take into consideration.

How Does a Self-Evaporating Portable Air Conditioner Work?

The self-evaporating portable conditioner works differently to traditional air conditioners. They first condense excess moisture during refrigeration, then cycle it through the cooling circuit to increase cooling efficiency.

The unit will then evaporate or expel the moisture through its hot-air exhaust vent. This disperses the moisture with hot air.

This means that the user won't have to drain any water into the container because most of the moisture created during cooling has been expelled from the room. Self-evaporating air conditioners can be energy-efficient.

Are you looking for a fully-evaporative portable air conditioner?

This question will depend on your personal preferences. You don't want to have to empty the water-catcher tray from your AC unit every time, which can drive you crazy, so you should consider a portable, fully-evaporative air conditioner.

This type of AC conditioner can also keep you cool during hot summer months. An evaporative AC conditioner doesn't require you to drain the hoses and the water-catching tray.

This ultra-cool air conditioner will efficiently evaporate all moisture from the air. Then, expel it outside through the vent pipe.


Air conditioners do more than just blow cool air into a space. They also remove moisture from a room and blow it into the unit.

This moisture must go somewhere, but that is the tricky part. These self-evaporating air conditioners have been quickly gaining popularity due to the fact that they automatically remove moisture from your home without any hassle.

A self-evaporating portable conditioner has the advantage of not having to empty the water collection tray manually, as is the case with traditional air conditioners.

Because water doesn't drip off their rear sides, self-evaporating ACs can also be called "no drip units".

This is because half of the condensed heat is recycled by the AC unit. It then cools down the inner cooling coils, allowing the unit to operate efficiently.

The air conditioner will work more efficiently if it can remove moisture using the auto-evaporation feature.

The air conditioner consumes less energy as the coils are mainly cooled with the recycled moisture. This feature will allow you to cool your room faster by providing extra cooling from the moisture.


The auto evaporation function has a major disadvantage: it cannot be used in high humidity. If the humidity is high when you are trying to keep cool in summer, the air conditioner will not evaporate all of the moisture in the air.

The water tank in the air conditioner will therefore store any moisture left after the auto-evaporation feature has ended.

Once the water tank is full, the air conditioner will stop working. The portable air conditioner will not function if the water tank is full.


You can choose from a range of sizes to cool different rooms. The coil assemblies of larger portable air conditioners are more powerful.

The air conditioner can therefore recycle more moisture than a portable unit.

Consumer Search states that portable air conditioners don't cool rooms as well as comparable window machines. A larger portable air conditioner will cool a smaller room better than a smaller one.


Make sure you check the features of your portable air conditioner before purchasing.

This feature is not available on all AC units. Each manufacturer makes a unique air-conditioning design. This forces the buyer to verify all details before purchasing.

Be sure the next portable air conditioner you buy has an auto evaporation feature.