Windowless Portable Air Conditioner – Complete Guide (2025)

What is a Windowless Portable Air Conditioner?

A windowless portable air conditioner is an air conditioner that does not have a window exhaust. These devices are evaporative coolers, ventless ACs, or swamp coolers that vent the hot air created inside the air through a hose. These air conditioners use the evaporation of water to cool the room.

How Does a Windowless Portable Air Conditioner Work?

There are two types of windowless air conditioners which are different in nature and work in different ways.

• Evaporative cooler – It uses fins and water-soaked pads which cool the air with a light spray of water.
• Ventless AC – It cools the indoor air i.e. hot air cone slowly which reduces the temperature of the room and makes us feel cool.

Pelonis Portable Air Conditioner

Can You Use a Portable AC Without a Window?

Yes, if your room has no windows and you want to use an air conditioner that is windowless.

• Through-the-wall vents
• Sliding glass doors
• Dryer vents
• Drop ceilings
• Chimneys or attics

How to Cool a Room With No Windows

If there is no window in your room then you don’t have to worry because today I will tell you some rules which you can use even in a room without a window.

• Best of all use an evaporation cooler.
• Use a topper fan which cools the room in low humidity.
• Keep cold water or a piece of ice in front of it to maintain moisture in the air.
• Install blackout curtains to block the sunlight so that the room does not get hot.

Advantages and Disadvanted of Windowless Portable Air Conditioners

Any product in the world has its advantages and disadvantages, so let’s see what are the advantages and disadvantages in it.

Advantage

• It does not require permanent installation at one place.
• It is a portable air conditioner which you can carry anywhere you need.
• It can be used in small houses like small apartments.
• It is available at various price points.

Disadvantages

1. Its main drawback is that it cannot cool large or very hot spaces.
2. It is not effective if the room is very humid.
3. It needs to be refilled regularly if the water evaporates.

Do All Portable ACs Need Venting or Draining?

Many people need one of these which are given below

• Venting: For removing hot air.
• Draining: For removing collected moisture.

Best Use Cases for Windowless ACs

We can practice this in many places like:

• Garages
• RVs & Mobile Homes
• Dorm Rooms
• Shops & Small Businesses
• Living rooms with no window access

Top 5 Windowless Portable Air Conditioners in 2025 (USA Picks)

Here are the top 5 windowless air conditioners with price and features.

Where to Buy Windowless Portable ACs in the USA

If you want to buy a windowless air conditioner in the USA then you can buy it from Walmart, Lowe’s, Amazon, and Buy Nearby stores.

User Opinions – Reddit & Real Buyer Reviews

• Reddit users suggest Honeywell and Frigidaire as reliable.
• Many users say that it has a lot of trouble cooling a large room.
• Sometimes its noise level is very high.

Windowless vs Ductless vs Swamp Coolers

Conclusion

If your room is small and there is very little space in your room and there is no provision for a window in your room, then a Windowless Portable Air Conditioner will be very good for you. You can use it very easily and there is no need to install it. You can carry it from one place to another at your convenience.

FAQs