The time it takes for a portable air conditioner (AC) to cool a room can vary depending on several factors, including the size of the room, the insulation of the space, the ambient temperature, the power and efficiency of the AC unit, and the desired temperature.
As a rough estimate, a portable AC unit can typically cool a small to medium-sized room (around 150 to 300 square feet) within 15 to 30 minutes, assuming the room is reasonably well-insulated. However, for larger rooms or spaces with poor insulation, it may take longer.
It's important to note that cooling a room to a specific temperature can take longer than simply achieving a noticeable decrease in temperature. To reach and maintain a desired temperature, the AC unit needs to cycle on and off periodically, removing heat from the room and maintaining the set temperature.
The specific cooling capacity (measured in BTU or British Thermal Units) of the portable AC unit, as well as its energy efficiency rating (EER), can also affect the cooling time. Higher BTU ratings generally indicate a more powerful AC unit, capable of cooling larger spaces more quickly.
To get a more accurate estimate for your specific situation, it's recommended to consult the manufacturer's specifications for the portable AC unit or seek guidance from the manufacturer or a professional HVAC technician.