No, it is not recommended to use a portable air conditioner without venting. Portable air conditioners work by extracting heat from the room and expelling it outside through a vent. This process requires a way to remove the hot air generated by the cooling process.
Typically, portable air conditioners come with an exhaust hose or duct that needs to be connected to a window kit or a specially designed vent to allow the hot air to be expelled outdoors. Without proper venting, the hot air will remain trapped in the room, negating the cooling effect and potentially causing the air conditioner to work inefficiently or overheat.
Using a portable air conditioner without proper ventilation can also lead to increased humidity levels in the room, as the condensed moisture collected by the unit needs to be expelled along with the hot air. This can result in a damp and uncomfortable environment.
If you're unable to vent through a window, you may consider alternative options such as venting through a drop ceiling, a wall, or using a portable air conditioner that does not require traditional window venting. There are models available that use innovative venting systems, like self-evaporative or dual-hose designs, which can be more flexible in terms of installation. However, it's important to carefully follow the manufacturer's instructions and recommendations to ensure safe and effective operation.