5 Best Windowless Air Conditioner (AC) [Buying Guide]

The windowless air conditioner has become a popular choice in many homes today especially in apartments without windows or central air. They are self-contained and very useful since they don’t need ductwork to work and can be placed anywhere easily.

If you are looking to invest in a windowless air conditioner, then you are in the right place. We’ve compiled some of the best models to select from including a brief overview of each of these products.

This article will guide you on how to choose an efficient windowless air conditioner that will suit your home and it’s needs.

Comparison between the Best Windowless Air Conditioners:

• PRODUCT
• OUR TOP PICK

Black + Decker 10000 BTU Portable Air Conditioner

Best Overall Windowless AC

• 10,000 BTUs of Cooling capacity
• Suitable for 150-250 Sq. Ft. Rooms

Honeywell HL10CESWW Contempo Series

Runner-Up Windowless AC

• 10000 BTUs of Cooling power 
• Ideal for 350-450 Sq. Ft. Room

BEST BUDGET OPTION

LG LP0817WSR

• Ideal for Rooms up to 150 sq. ft.
• 8000 BTU (ASHRAE-128 Standard)
• Second Runner-Up Windowless Air Conditioner

Honeywell MO08CESWK

• 8000 BTU Cooling Power
• Ideal for 350 Sq. Ft. Room
• Best Windowless Air Conditioner

Honeywell MN10CESWW

• Best for the Money
• Ideal for 350-450 Sq. Ft. Rooms
• 10000 BTU/ 5500 BTU Cooling Capacity

Reviews of the Best Windowless Air Conditioners

Best Overall:

BLACK + DECKER 10000 BTU Portable Air Conditioner Unit

PROS

• Easy to Install and Set Up, low installation cost
• Reusable Washable Filter, no need to buy new
• Strong Fans for Cooling Effect in less time
• Multifunction (Dehumidifies and Cools) all along
• Operates with no noise With 75dB on High Setting
• Compact and Portable-Is Suitable for Small Rooms of apartments.
• Remote Control Meaning You Can Operate From Anywhere in the Room which makes it feasible to operate

CONS

• Bright Blue Display Lights are Too Bright and disturbing
• Sliding Windows Panels Are not Sturdy Enough

Bottom Line

One of the main reasons why people may seek out this unit is its portability for people with smaller rooms. However, it works best in small spaces and for those who want to take cooling from room to room only. Above all, it is considered attractive and does not block your view out the window just like all windowless ACs

Runner-up:

Honeywell HL10CESWW Contempo Series

PROS

• Easy Storage system
• Energy Efficient saves energy
• Not noisy while Operation
• Bucket-Less Design
• Lightweight and compact, easy to lift
• Washable Filters for Easy Maintenance, low-cost maintenance

CONS

• Installation Issues might cost much.
• Some Quality Control Issues as well.

Bottom Line

When it comes to room cooling, this unit is specifically designed to provide best consistent functionality and efficacy. It has been built with high-quality standards to ensure durability and increased product life.

​LG LP0817WSR

PROS

• Quite Affordable
• Highly Portable and liftable
• Oscillating Air Vent provided
• Sleek compact and Attractive Design 
• Doesn’t Cool Large Spaces or rooms
• Remote control operation
• Suitable for Cooling a Small Room of apartments

CONS

• Very Noisy
• Small Internal Water Tank Which Requires Constant Drainage and cleaning

Bottom Line

This model is a suitable and considerable choice if you are looking to invest in an affordable windowless air conditioner for smaller rooms or when you’re on the go. It provides sufficient air conditioning when placed upright properly. It is well-designed with desirable features that enhance its cooling performance and fits well in the room with an equally distributed cooling effect.

​Honeywell MO08CESWK

PROS

• Pocket friendly
• Saves energy
• Highly Portable and liftable
• Quiet Operation, not noisy
• Fast and Easy Installation process
• Easy Storage and Maintenance, low-cost maintenance
• Washable Filter and Filter Change Alert is present

CONS

• Condensation May Not Evaporate 

Bottom Line

The Honeywell MO08CESWK is considered the best windowless air conditioner available on Amazon for its impressive performance and energy efficiency which makes it lighter on the pocket. Also, it is highly portable and eliminates the struggle of heavy lifting and can be dragged or lifter easily to any other place.

Best for the Money:

Honeywell MN10CESWW

PROS

• Highly Portable and liftable
• Saves energy
• Powerful Cooling effect
• Quiet Operations, no noise
• Easy to Wash and Clean Filters increasing durability
• Easy Storage and Maintenance
• Feather-Touch Display and Control Panel provided

CONS

• Bad Warranty Support, risk factor.
• May Produce Loud Noises also

Bottom Line:

If you are working on a budget and need to feel the value for your money, the Honeywell MN10CESWW AC is your best choice. It’s affordable and is high performance to cool your room fast and consistently with equally distributed cooling. 

Perks of Investing in a Windowless Air Conditioner

There are many benefits that come with investing in windowless air conditioners. They include:

• Portability​:

Most of these units are compact and lightweight for easy movement from one room to another.

• Occup Small Space:

Compared to window air conditioners, these units need a very small space. They are also great for small apartments or studios.

• Both Cools and Dehumidifies the Air​:

The 2-in-1 feature acts as an air conditioner and dehumidifier of air at the same time.

• Easy Installation​:

All you need is to identify the perfect location, then fix a drain hose downhill, and you’re done.

• Energy Saving​ Mode:

Most of them come with thermostat and night mode settings which ensure the AC runs only when needed and not unnecessarily.

Conclusion

It is important to consider all the factors that will guide you in selecting the best windowless ACs in the market. Not all of the above will suit your needs, therefore, evaluate your room requirements and grab according to your budget.

To conclude, when choosing your desired windowless air conditioner, find one that is worth your money in terms of performance and efficiency both.

How Does it Work?

Windowless air conditioners work with the help of three main parts: a compressor, a condenser, and an evaporator. The cooling effect starts when hot air enters the compressor in a gaseous form. gas pressure increases, which forces itself to the condenser eventually.

Once there, the gas cools significantly and leaves the condenser as a liquid. In the evaporator, the liquid turns to gas and takes in heat from the air releasing cooled air to the surrounding spreading all around the room. This process continues with the control of the thermostat provided for keeping a constant temperature maintained

How to Drain Water from a Windowless Air Conditioner?

 steps include:

1. Get a drain bucket or move the unit close to a sink.
2. Get the drain plug either on the side or back of the unit.
3. Drain the water by putting off the drain plug and stopper.

However, once the drain plug is removed, remember to set up the drainage for continuous drainage until all removed. 

4. Measure the drain port mouth and get a hose of exact width to ensure a water-tight fit and spillage.

5. Place your drain hose in the proper position (downhill) for it to be effective.

-Note that in order to support continuous drainage gravity must apply and the bucket should be down.