Updated If you're looking for a portable air conditioners without a hose or window exhaust, then what you want is an evaporative air cooler (also called a swamp cooler or wet air cooler) which is basically a device that cools the air by evaporating water. Here are some good ones. These require water and with some units, you can even add in ice in order to cool the air down even faster. It works by sucking in the warm air in the room and cooling it down before blowing it back out. This results in a temperature drop.These air coolers won't cool your room down as much as regular air conditioners so if your home/room gets really hot, it's best to get a regular AC unit. The good thing about the air coolers is that it uses less electricity than ACs since they don't use energy hogging components like compressors. This means you get to save money because as you probably already know, traditional ACs can run the electricity bill up by a lot.There are a lot of evaporative air coolers to choose from varying in strength and coverage in terms of how much square feet of the room it will cool down, how much water it can hold, and other options like varies speeds.

These can be used indoor or outdoor and have caster wheels under them for easy portability.There are different models for different room sizes such as the one pictured below, made for medium to large sized rooms.I'd say if you're looking for something that will cool your room down more than a fan would but not take up so much energy or require you to stick part of the unit outside or run a hose outside, then an evaporative air cooler is the way to go.Learn more about evaporative air coolersManufacturer of pictured item: HoneywellWritten There are no ventless air conditioning units currently available, but there is an alternative called an Evaporative Air Cooler. These units cool the air by evaporating moisture through a material that is kept wet by being partially immersed in a tank of water within the unit.A fan blows air through the material, evaporating the moisture, and creating cold air that can reduces the temperature in the room. Because there is no refrigeration process, there is no exhaust air, and therefore, no vent is needed.

It also uses less power than an AC unit, so you could save some money on your electricity bill in the long run.This Honeywell model is pretty solid. Written So far as I know there is no such thing as a portable or room sized air conditioner that works without exhausting the heat removed from room air to some outside space, usually the great outdoors. There are larger units, commercial units, non portable, that can dump excess heat into water in a tank or other reservoir, with the water eventually being replaced with cold water via plumbing.So called swamp coolers or evaporation coolers are NOT AIR CONDITIONERS.BUT they do work rather well IF the humidity of the ambient air is LOW. They work GREAT in a low humidity desert environment for instance. But the savings on electricity are partially offset by the use of lots of clean fresh water, which can be pretty expensive in a desert environment.They are basically just about entirely worthless on a hot MUGGY high humidity day.I live in a place where hot days are usually also quite humid, and know maybe half a dozen people who have given evaporative coolers a try.

All of them took them back to the store for a refund.The reason they won’t work on a humid day is that water will not evaporate very well or quickly into air that is already loaded with moisture.wall ac unit not coolingDO NOT BUY A SWAMP COOLER EXPECTING IT TO WORK IN A HUMID CLIMATE.ac to dc power supply diagramHow can you use a portable air conditioner without an exhaust hose?what makes an ac unit freeze up A portable air conditioner does not work without an exhaust vent; however, it is possible to minimize the hose length by installing vent similar to the one used for a dryer to exhaust the unit. Portable air conditioners work by moving heat from the room and must vent to cool. Why must a portable air conditioner have a hose?

What is the purpose of the vent open or closed on a window air conditioner? What is important to know before buying a portable AC? All air conditioning systems require a connection to the outside to remove heat from an area. With central air conditioning and window units, the system transports the heat to the evaporator coils outside using refrigerant. With the portable unit, the evaporator coils are inside the home. A fan pushes air through the coils and vent to the outside. Air is less efficient at transporting heat than refrigerant. This makes portable air conditioners less efficient at cooling than either window units or central cooling systems. Portable air conditioners are small units on wheels that allow the owner to move them to the desired location for use. Once in location, the hose connects to a port on the back of the air conditioner. The easiest way to exhaust the system is to connect the hose to a sliding window using the small expanding panel the venting kit supplies.

For casement windows, owners often choose a plexiglass panel to replace the window glass for venting. However, the dryer vent connection allows the user to hide the hose behind the unit without blocking a window. Do all portable AC units have vents? A portable air conditioning unit requires a vent because it needs some way to remove heat from the room it is cooling. Without a vent, the unit simply disc... How do you clean an indoor air duct? An indoor air duct can be cleaned by removing the vent from the wall and vacuuming dust from the vent and the air duct with a vacuum hose or brush. What is an exterior exhaust vent? An exterior exhaust vent circulates air, moisture, grease, steam and smoke to an outdoor area of a home or business. Exterior vents are often attached to m... How do vented gas space heaters work? A vented gas space heater is an indoor heater that burns natural gas or propane to produce heat, requiring an exhaust vent connected to the outside air.