Best AC Unit for Room with No Window (2020 Reviews)

AC Unit for Rooms with No Windows

Places with Windows and doors where the air keeps flowing are pretty ventilated and natural air cooling is nothing unusual. Basements converted into rooms, condos, or bedrooms which are placed in that awkward corner in the house with no windows are pretty hard to ventilate. The solution for this is an AC unit for room with no window.

These places can easily be ventilated and in this guide, we will be talking about how to vent a window air conditioner without a window and make it a cool joint.

Quick Review: Top picks for AC Unit for Room with no Window

  1. Top Pick: Honeywell 525-729CFM
  2. In Budget Option: Black + Decker BPACT14HWT  
  3. Other option: LG LT1016CER :

The difficulties in cooling a room with no windows:

Hot, damp, and stuffy are some of the symptoms of a room with no windows. The rooms are poorly ventilated and there is very little or no air circulation. The excess humidity in the room will clog the AC´s condensate drain unit making it overdo the work, overheating it and finally breaking the compressor down, and eventually, you will be spending more on the maintenance which could have been avoided by using a customized cooling unit (ventless air conditioner). How to cool a room with no windows? Well, then continue reading to find out the best options that you have in the market.

What size of Air Conditioner for room without windows do I need?

iEGrow HQM-MY001 Handheld USB Mini Misting FanThe size of an AC is usually measured in terms of BTUs. The size of the AC that you are looking for will mostly depend on the area you want to cool. Keeping this factor in mind will save you a lot of money and will be more efficient.

If the room size is too small of the room then the room will cool way too fast without properly reducing the humidity and if the room is too big then the AC unit will not properly cool.

Adding 20 additional BTUs per square foot area will be a smart move overall.

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Area in sq. ft.Capacity in BTU
Quick Glance: Best AC Unit for Room with No Window
These are our recommendations for the Best AC Unit for Room with No Window:
  1. Pioneer WYS012-17
  2. Honeywell CL201AE
  3. Black+Decker BPACT14HWT
  4. hOmeLabs

Review of the Best AC Units For Rooms With No Windows

Mostly, the rooms that have no windows are also compact in size and the size needs to be utilized properly i.e. whichever air conditioner we will be choosing will have to fit in the room without occupying much space whether be it a wall-mounted air conditioner or a portable ac unit. Also, it should not be noisy and maintenance-free. 

Fortunately, we do not need to customize or design our very own cooling systems and there are numerous and highly efficient hybrid systems designed to operate in poorly ventilated and compact rooms. After researching various AC units we have come out with 5 best system to choose from:

Mini Split System

This is basically a ductless design consisting of 3 components: a window unit, a central air unit, and a condenser. This is not a portable air conditioner unit and the functioning is as follows: it sucks the air from outside and hence cooling down the room. During the installation, the condenser is placed out, and then it is connected placed high inside the room. The cons of this system are:

The outdoor components make the system highly space-efficient to fit into small spaces such as small dorms or basement dressing rooms. The indoor evaporator can be placed anywhere at an appropriate point in the room as the window unit is placed distantly allowing it to not occupy much space in the room.

As the condenser is placed outside the room which is the noisiest part of the system, it makes the system extremely quiet. It makes the system ideal for rooms such as man caves or dressing rooms or libraries. This system is highly preferred in Libraries as these places need to be quiet.

This system is not centralized which gives you a chance to zone the ventless air conditioner to cool the places only when necessary.

These remarkable fully featured and completely portable air conditioners are on wheels that can go virtually anywhere. These sleek and attractive units operate without drain lines or water hoses.

They have advanced technology that reduces the drip, so there is less need to empty water condensation (usually enough to water a plant or two).

Comes complete with 4.25 feet expandable exhaust air hose and expandable window vent (warm air exhaust can be directed to, hallways, false ceilings/floors, doorways, closets, empty spaces, windows, fireplaces, dryer vents, bathroom fan vents, heating vents/grills, skylights, vaulted ceilings, or anywhere you choose).

Maximum exhaust hose length is 10 feet, simply elevate unit for 12&16 ft ceilings. We also feature an antibacterial filter that collects dust and prevents bacteria buildup.

In addition to functioning as an air conditioner, a fan, and an air purifier, we also have a built-in automatic dehumidifier.

Best Minisplit System : Pioneer WYS012-17


  • 12,000 BTU heating capacity
  • Ideal for single-zone residential use
  • Light commercial applications


  • Non-portable


Evaporative Air Cooler

The geography of your area falls under a low humidity area, the evaporative air coolers can be really a cost-effective way to cool your house. As the name suggests these air coolers work on the principle of ‘Evaporation’.

The working of this portable air conditioner for a windowless room is as follows: The system has a water pump that pumps water up the system to the cooling pads on the back pad of the air cooler. The Filter pads suck the warm and dry air in the room and force them to pass through the pads which eventually cool the dry air causing the water to evaporate. Evaporation leads to cooling eventually leading to a cooling of the room making it more hospitable.

Why Install an Evaporative Air Cooler in Your Room

Evaporative air coolers operate smoothly and quietly. You can hence install it in any space whether it be a bedroom, a dressing area, or your favorite place of relaxation in the basement.

The whole portable ac unit is much cheaper than other air conditioning units. As it has the ability to freely move and does not have an exhaust hose or a condenser. The other systems are power-hungry while this swamp air cooler just needs water to cool down your entire space reducing the operational and maintenance cost.

Top Evaporative Cooler: Honeywell CL201AE


  • Comfortably cool a large space.
  • 288 watts of power consumption.
  • 3-4 fan speeds.
  • oscillating louvers.
  • Cost-efficient.
  • It comes with Remote.


  • Less cooling comparatively.

Portable Air Conditioner 

The Portable Air conditioner stands over the crowd. They are space-efficient, Make a very little noise, and can sum up with your fan and a modifier. These portable air conditioners are energy efficient and can be easily moved around the office. Apartments that are cozy and tight in space and where central cooling system could not be fixed, Portable Air conditioner comes into the picture.

Generally very light in weight and does not require much of manpower to shift around places.

  • It can cool a very large space.
  • Multiple programs modes as per your cooling needs
  • Air purifiers are inbuilt attached.
  • Performance is efficient.
  • Eco friendly.

Best Portable AC (Vented): Black+Decker BPACT14HWT

Black+Decker BPACT14HWT


  • Versatile and has different operating modes like cooling, dehumidification, and heating modes.
  • Equipped with programmable electronic controls and multi-mode remote.
  • Powerful enough to heat an area of up to 300 sq. ft.
  • Digital temperature sensors along with a display to showroom temperature.
  • The House is 4 feet and 11 inches.
  • It carries a 7,500 BTU


  • Different modes of cooling
  • Energy efficient
  • Portable.


  • Not good to cool a very large area.

Through The Wall Unit

As the name suggests, These units are kind of a permanent solution to all your cooling problems. A passage is created in the wall which is exactly equal to the size of the System, this can also be adjusted to windows sealing the window properly. Through-the-wall units are versatile to install in almost any place.

Comparison Between Window AC Units And Through-The-Wall Units

The through the wall units are designed to vent the air from the rear part of the system while the Window AC unit sucks air from the rear as well as the sides.

Window AC units are easily portable from one room to another while the through the wall units cannot be ported from one place to another. Thus these are more of a permanent solution.

Window units are only fitted to windows so you need to keep a lot of things in mind while purchasing the product like the measurements, weight. These Window air conditioner units also have to be sealed properly so as to avoid any external hot air entering the room else the effect would be nullified.

Best Through-The-Wall AC:LG LT1016CER



  • The capacity of 9,800 BTUs and cools up to 450 sq ft of area.
  • 3 modes of fan speeds
  • It has an energy-efficient rating (EER) of 10.6
  • Mesh filter to clean the air


  • Efficient Cooling
  • Minimum space


  • Non Portable

Portable Air Conditioner: hOmeLabs


The best large windowless portable AC is from hOmeLabs. It has a capacity of 14,000 BTU and still moves on its wheels effortlessly on its caster wheels, don’t expect to lift and carry around though. It has an effective cooling range up to 650 sq ft area. However, the power consumption would be a bit on the higher side if used on high for a longer duration.

With an EER rating of 10.1, it isn’t one of the finest energy-efficient machines but the eco mode can help you save some bucks however the fan speed is quite low in eco mode and could be troublesome in hot weather.

Frequently switching from eco mode to standard modes and baCk to eco mode once the room is cooled can help you reduce the power consumption. Once the room is chilled you can just switch on the fan mode and relax for a much longer duration.

It comes with a multifunctional remote control so you do not have to get up from your seat every time.


  • Washable air filter
  • Dehumidifies without draining
  • Remote control operation


  • Low Fan Speed


There can be numerous ways to cool a room without windows and the type of system that you wish to install depends on various factors like space available, pocket friendly, portability, maintenance, and the type of environment.

The AC that we have mentioned here can typically fit in all sizes of space available and have a wide variety of applications and can adapt to any kind of atmospheric conditions. Go through all of them and choose the one that best suits your requirements.

Locating Inexpensive Portable Air Conditioning Units

Locating Inexpensive Portable Air Conditioning Units

If your residence does not have a spot to put a device to cool the room, then stop suffering! You can enjoy cool air on a steamy summer day by using a single room cooling unit that is portable.

They can provide an easy substitute for regular air conditioning units for people who may not have adequate room to fit window units or for individuals who rent and cannot put any holes in the walls. Portable air conditioners are movable and can be taken anywhere based on the prerequisite. They don’t need to be mounted in the wall, but there are specific items that need to be thought about when using the portable air conditioners.

The most imperative thing to think about for utilizing portable air conditioners is to use suitable exhaust hoses and venting systems. It is important to have suitable ventilation within 7 feet at the least since portable air conditioners utilize Freon gas to cool.

These kinds of air conditioners are used in apartments with little room or industrial warehouses where central air can be very costly and very computer server rooms. In fact, a lot of individuals seem to enjoy the simplicity and price of these kinds of tinier units.

Because hot air must be expelled in order to function and cool the area perfectly, most portable air conditioners come with full kits which will provide ventilation through an easily accessible opening. You may desire to ask a professional for help before making the decision to buy is you are uncertain of which unit you want to purchase.

The exhaust tubes that are typically used for ventilation are between 5 and 7 feet in length, 5 inches in diameter and are composed with top quality flex material that guarantees their sturdiness. Covering casement windows and other openings with Plexiglas prohibits the obstruction of light and keeps the enclosed space as lit up as before.


How to Vent a Portable Air Conditioner With no Windows?

Best AC unit for room with no window can be properly ventilated using either a dryer vent, a wall, or a drop-ceiling. You can any of these techniques efficiently as per the availability and effectively ventilate your room and portable AC with no problems.

Do All Portable Air Conditioners Have to Be Vented Out a Window?

Yes, portable air conditioners have to be vented out like any other air conditioner. For effective cooling of the room, you need to have the hot air flow out of the room. Any of the above methods are suggested for the same.

Are Portable Air Conditioners Effective?

The central air conditioning units will always have an upper hand on the portable air conditioners but still, they can be trusted to keep the room temperature at 78 degrees F, the ideal temperature where we feel comfortable.

What can be done to extend the life of an AC Unit?

Regular maintenance, cleaning, and care will be the best methods to obtain a prolonged life for the AC unit. Replacing and maintaining Air filters is one of the most significant procedures to obtain the desired life. Unplug, clean, and keep in a cool and dry place when not in use and make sure any issues are fixed immediately.

Which models on our list offer heating as well as cooling?

From our list, the Pioneer Air Conditioner WYS012A-19 is the only model to offer heat as well as air conditioning.

What is the best place to buy an AC unit for Room with no Window?

You can buy a windowless AC at any home improvement store such as Home Depot or Lowers. 

The best online places to buy AC units are through Amazon or Sylvane. When purchasing online, you can get faster shipping, find the right servicing parts (filters, etc.), and get mind-blowing discounts and offers which you will definitely find in local shops.


As well all are now aware of the factors that we need, its time we go through the requirements and finally get hands-on one finest products mentioned which perfectly suits your requirements.

Depending on your specific needs or restrictions, it can be challenging to figure out which model is best for you.

Well if you need suggestions then we would be definitely recommending you with our top pick: BLACK+DECKER BPACT08WT this portable air conditioner is the best AC unit for room with no window as it is lightweight and has many features which make it viable to cool any small room efficiently.

I hope you find this guide helpful.

Do let us know in the comments if you have any questions or feedback regarding the review.

Also read: How Much Money should I Save to Move out of State?

AC Unit for Rooms with No Windows

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