How To Make A Portable Air Conditioner Colder
In some portable air conditioners, you can adjust the fan speed. If your portable A/C allows this, try decreasing the fan speed.
Decreasing the fan speed will decrease the airflow and make it harder for cold air to dissipate quickly. It will also bring down the room temperature a bit more slowly.
If your portable AC doesn’t have adjustable fan speed, try placing it closer to the source of cold air. For example, if you are using an air conditioner inlet hose, place it as close to the cold air vent as possible.
Stay away from portable AC cold air inlets when they’re running. The outlet hose might be cool (and therefore comfortable), but there’s a chance that the cold air blowing out of the inlet hose will be too cold.
A portable AC unit only produces roughly 60-90 cubic feet per minute (CFM) of air. If you’re using it within the same room, that might be all you need. However, if there are multiple people or pets in the room, or you aren’t satisfied with the temperature level, portable AC units often require a workaround.
Try placing two portable A/Cs in your room. If one is working well but not cold enough for your tastes, try placing it closer to the source of cold air inside the house and farther away from people. Place another portable AC directly in front of the intake vent to increase the airflow. This will decrease your portable AC’s cooling power by half, but it might be better than having one portable AC blowing warm air.
Most portable A/Cs can switch between heating and cooling modes, so consider purchasing a dual-purpose portable air conditioner that does both jobs well.
If you’re using your portable AC for cooling, but it’s not blowing cold air, try placing a bag of ice near the portable AC. The vast majority of portable A/Cs work by sending hot air through an evaporator coil. Water vapor passes over this coil to cool it down, and then the cooled water droplets are sent out of the portable AC through a port. When the portable A/C evaporator coil is cold (because it’s near a bag of ice), air blown over this coil will be colder as well, leading to more efficient cooling.
If your portable AC has adjustable louvers, try pointing them at yourself or in another direction. If you’re not getting any cold air, try turning the portable AC around. There might not be a cold air intake vent on that side of the portable AC, and you might need to increase your portable A/C’s airflow with an inlet hose instead.
Turn your portable AC off and unplug it when you’re not using it. If there is no good place for it to vent hot air, the portable AC might continue heating and cooling the room even though you’re not in there. If your portable A/C stays on when it’s not plugged in, check its settings to make sure that it is set to automatic mode instead of manual or timer modes.
If you can’t figure out how to get your portable AC to be cold at all, consider purchasing a portable A/C that’s designed for better cooling. Portable air conditioners are not very powerful, so you might get better results with an air cooler instead.
If you’re considering purchasing portable AC units to cool your entire house during the summer months, take into account how much electricity portable AC units will cost you to run. Portable A/Cs can be expensive, and running portable ACs all day might cost more than the total damage that an afternoon thunderstorm would cause your house.
In the end, there’s not much you can do besides investing in a portable A/C unit with better cooling power or waiting for a thunderstorm to cool off your house naturally. If your house is too hot during the summer months, portable air conditioners might simply not be powerful enough to make a difference.