You may also be interested in our reviews of the best small AC units. How would you like the feeling of central air conditioning in a room with no windows, but without having a central air conditioner? A ductless mini split system consists of an indoor unit mounted on a wall or ceiling and an exterior condenser to power the system.
If you want to know how to cool down a room without windows while enjoying the max power of air conditioning, this is your best option. Take a look at our guide on the best mini split air conditioner system to see what types are available. You can choose to cool between one to six rooms at once. Strategically placing two fans in a room is a fairly unknown trick when it comes to cooling down a room without windows. The fan facing the ceiling will help circulate hot air that has naturally risen to the ceiling while the other fan will push that hot air through the doorway and out of the room—cooling you down.
They can also be used along with an air conditioning unit to help ease the task of cooling the area alone. Believe it or not, a stove, oven, computer, laptop, lightbulbs, and even an iron give off heat which can affect how hot a room feels.
You need to have enough width to accommodate the width of the AC unit vent hose. Slide your sliding door back far enough to allow for the vent hose. Push the door ajar so that you have a seven-inch space to work with. Using the provided vertical panels in your kit, place the vent hose in the gap of your sliding door. Make sure to use weather stripping, insulation, and sealant to ensure that this new panel along the edge of your sliding door has the best possible seal. Depending on the way you decide to install the vent and the vertical panels, you should still be able to use the sliding glass door to go in and out, although you may or may not be able to use a screen across that space.
Once the vent hose and panels are installed, the sliding door will no longer be able to latch and lock as it once did—but you can insert an adjustable security bar or a sturdy piece of wood in the space right behind the sliding door, along its track. This bar or wooden dowel will prevent the door from being pushed back from anyone on the outside.
To slide the door open from the inside, remove the wooden dowel or security bar from the sliding track and pull on the door handle. You can pipe the hot air out through a chimney.
However, it absolutely must be an unused chimney in an unused fireplace. If you never use the fireplace or chimney, feel free to install the portable AC unit right underneath the chimney or inside the fireplace. Affix the vent hose to the wall of the chimney. Since chimneys are designed to vent hot air, venting AC up a chimney can be a great idea even for a room that does have windows.
What if none of these venting options work out for you? What can you do to cool down a room with no windows? There are a few different strategies you can try to lower the temperature of a room with no windows and no climate control options.
To maximize the cooling sensation throughout the space, angle one-floor fan toward the ceiling. Aim a second fan at the door. The first fan will swirl away the hot air near the ceiling, while the second one forces warm air out of the room. Evaporative coolers are essentially portable fans that incorporate a tank full of ice. The currents of air from the fan will blow the cooler air from the ice further into the room. While this option may provide a cooling experience, it can also increase the humidity level in the room; so if you use it too often without proper ventilation or airflow through the space, you may eventually have mold issues.
The more electricity is used within a space, the more heat is typically generated. Swamp coolers are an integral part of hot weather life. The Honeywell CFM evaporative cooler is the best swamp cooler for windowless rooms.
It can throw cold air throughout rooms up to square feet, and with the addition of the ice bucket, that air can be frigid. It is ideal for smaller rooms or targeted cooling in larger rooms.
This cooler is a high-powered fan blowing air over ice to keep things cool. When the ice melts, the cold water will continue to cool the air for a few more hours. You will need to refill the ice bucket often on hot days, though. For the most part, an ice tray will last for 4 hours, but in temperatures over 95 degrees F , this can be as low as 1 hour. You will need a way to vent the exhaust, and most portable units will ship with a window hose that fits in a window opening to vent the hot air outside.
For mini-split systems, you will need an HVAC technician for installation. These require special installation requirements, permits and must meet code. The professional installer will ensure you meet all the needed requirements. Also, most manufacturers will post how-to videos on YouTube for you. Check out this installation video from Honeywell. When using a windowless air conditioner, you will need to perform routine maintenance. This will include cleaning or replacing the filters, emptying the drain pan, and keeping the unit clean.
The intake vents will need to be vacuumed out, and on certain models, you should clean out the exhaust hose as well. Draining the water pan will vary from model to model. Some will not need to be emptied as they will evaporate themselves. Others require you to remove the pan and empty it yourself or to connect a garden hose and drain it that way. What are some common problems that may arise with ACs in windowless rooms? The most common issue is overuse. If the units are not properly vented, they will end up recycling the same hot air they attempt to exhaust.
This will make the units work harder to cool the room, in turn, raising your electric bill or causing the machine to burn out. Learn about other common issues here. Regular maintenance, cleaning, and care will be the best method of prolonging the life of your AC unit. Replacing or cleaning the filters is the most significant maintenance procedure to follow. It also helps not to run the unit for prolonged periods. Unplug and store in a cool, dry place when not in use and make sure that any issues presented are fixed immediately.
Which models on our list offer heating as well as cooling? Where is the best place to buy this type of air conditioner? You can buy a windowless AC at any brick and mortar home improvement store such as Home Depot or Lowes. Most local hardware stores, like Ace Hardware, will carry them also but these places will usually only stock a couple of options.
The best online places to buy AC units are through Amazon or Sylvane. When purchasing online, you can get faster shipping, find the right replacement parts filters, etc. As you can see, when it comes to keeping a single room in your house or apartment cool, you have options.
Depending on your specific needs or restrictions, it can be challenging to figure out which model is best for you. This portable AC is lightweight, has enough features to make it viable and cools a small room efficiently.
AC Condenser Pads. Page Contents show. Quick Guide — Our Top Picks. Windowless ACs Compared. Installing Windowless Air Conditioning Units. With some exceptions, they are only capable of cooling the air a few degrees in a smaller area. Some portable units use internal evaporator coils and can run over 12, BTUs. These systems can effectively cool up to square feet. Best Large Option. Check The Latest Price. Best Small Option.
Best Mini Split AC. Windowless ACs Compared Image. Window kit with hose. Window or wall. Check Sylvane. Check Amazon.
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