In this Portable Air Conditioner Buying Guide, we first provide overview picks and full top portable air conditioner reviews. There are 10 models in different niches, so you can quickly choose one with the right size and/or features like WiFi or Heat that you want.
The best of the best: Our guarantee to you is that we have truly chosen models with the top ratings in their class, and we think that is unique to our list compared with others. We have no idea why other sites compile lists with poorly rated units.
The Buying Guide that follows is designed for you to research your options, compare portable air conditioners to window air conditioners and to central cooling options like a central AC, heat pump or mini split / ductless heat pump. Links throughout are available for exploring those other options, so you can make an air conditioning decision you will be happy with in the years ahead.
Quickly find the info you want with the Navigation list of topics, or read it all.
Best Portable Air Conditioners
SereneLife Portable AC
We recommend this versatile portable AC for its powerful cooling and multi-functionality.
Pros
- Cools up to 450 sq ft effectively
- 3-in-1 functionality (AC, dehumidifier, fan)
- Easy to move and set up
Cons
- Slightly noisy at 55-57 dB
- Requires window installation
- May struggle in very large spaces
We found the SereneLife Portable AC a solid choice for cooling medium-sized rooms. Its 10,000 BTU capacity handled our 400 sq ft living room with ease. The unit’s portability impressed us – we rolled it between rooms effortlessly.
The 3-in-1 functionality proved handy. We used the dehumidifier mode in our damp basement, noticing a significant improvement in air quality. The remote control made adjusting settings convenient from across the room.
While not whisper-quiet, the noise level wasn’t overly disruptive. We appreciated the easy-to-clean filter and the clear LED display. Overall, this AC offers good value for its cooling power and versatility.
Coolblus Portable AC
We recommend this Coolblus portable air conditioner for its versatile functionality and efficient cooling performance.
Pros
- 3-in-1 functionality (cooling, dehumidifying, fan)
- Energy-efficient with high CEER rating
- Easy installation and mobility
Cons
- Slightly noisy at 52 dB
- May struggle in larger spaces
- Requires regular filter maintenance
We found the Coolblus portable AC to be a solid performer in our tests. Its 12,000 BTU cooling power quickly chilled our 550 sq ft room, taking about 15 minutes to reach the desired temperature. The unit’s compact design and smooth-rolling casters made it a breeze to move around.
The LED control panel and remote control were intuitive to use. We appreciated the sleep mode, which kept noise levels down and helped us rest comfortably. The auto-evaporative system was a nice touch, reducing the need for frequent water emptying.
While effective, we noticed it could be a bit loud at full power. The washable filter was easy to access, but needed regular cleaning for optimal performance. Overall, this Coolblus AC offers good value for smaller to medium-sized spaces.
BLACK+DECKER 8,000 BTU Portable AC
This versatile portable AC offers solid cooling performance for small to medium-sized rooms.
Pros
- Easy to move between rooms
- 3-in-1 functionality (AC, dehumidifier, fan)
- Simple installation with included window kit
Cons
- Can be noisy at higher settings
- May struggle in larger spaces
- Exhaust hose required for optimal cooling
We found this BLACK+DECKER unit to be a reliable cooling solution for spaces up to 350 square feet. Its compact design and built-in wheels make it a breeze to relocate as needed. The remote control adds convenience, allowing us to adjust settings from across the room.
During our tests, we appreciated the unit’s ability to quickly cool down a stuffy bedroom. The dehumidifier function proved especially useful in muggy conditions. While it performed well overall, we noticed it could get a bit loud on the highest setting.
The included window kit was straightforward to install, though we recommend having a helper for easier setup. For best results, we suggest using this AC in smaller areas, as it may struggle to maintain consistent temperatures in larger open spaces.
Dreo AC515S Portable Air Conditioner
We recommend this powerful and quiet portable AC for its impressive cooling capacity and smart features.
Pros
- Powerful 12,000 BTU cooling
- Quiet operation at 46dB
- Smart app and voice control
Cons
- May be bulky for small spaces
- Initial setup can be time-consuming
- Higher price point
The Dreo AC515S impressed us with its robust cooling power. In our tests, it quickly chilled a 300 sq ft room on a sweltering day. The 3-in-1 functionality gave us flexibility, allowing us to switch between cooling, dehumidifying, and fan modes effortlessly.
We appreciated the unit’s quiet operation. At just 46dB, it didn’t disrupt our sleep or work. The smart features were a standout, letting us control settings via app or voice commands.
The drainage-free design was a convenient touch, reducing maintenance hassle. While the initial window kit installation took some time, the universal design fit our windows without issues. Overall, the Dreo AC515S offers powerful cooling in a user-friendly package.
HUMHOLD 10000 BTU Portable AC
We recommend this versatile portable air conditioner for its powerful cooling, multiple functions, and user-friendly features.
Pros
- Efficient cooling for spaces up to 500 sq ft
- 3-in-1 functionality: cooling, dehumidifying, and fan
- Easy to move with wheels and handle
Cons
- May require frequent draining in humid environments
- Slightly noisy at higher fan speeds
- Window kit only fits sliding windows
We tested this HUMHOLD portable AC in a 400 sq ft room and were impressed by its cooling power. The unit quickly brought the temperature down to a comfortable level. Its compact design and wheels made it easy to move between rooms.
The dehumidifier function worked well, removing excess moisture from the air. We appreciated the sleep mode, which maintained a comfortable temperature while operating quietly. The remote control was responsive and convenient for adjusting settings from across the room.
One drawback we noticed was the need for more frequent draining when used in high humidity. While not a dealbreaker, it’s something to consider. Overall, this portable AC offers good value for its price point and versatility.
Whynter ARC-14S Portable AC
We recommend this powerful and versatile portable air conditioner for its exceptional cooling performance and convenient features.
Pros
- Cools large spaces up to 500 sq. ft.
- Quiet operation at 51 dBA
- Built-in dehumidifier with auto-drain function
Cons
- Relatively large and heavy unit
- Window kit may require modifications
- Higher power consumption
The Whynter ARC-14S impressed us with its cooling prowess. It quickly chilled our 500 sq. ft. living room on a sweltering summer day. The dual-hose design efficiently expelled warm air, maintaining a comfortable temperature throughout the space.
We appreciated the unit’s quiet operation, especially at night. The low-speed setting produced a soft white noise that didn’t disrupt our sleep. The built-in dehumidifier was a pleasant surprise, effectively reducing humidity without requiring manual draining.
Setting up the ARC-14S was straightforward, though the window kit needed some adjustments for a perfect fit. While the unit is on the larger side, its cooling performance more than made up for the space it occupied. We found the multiple operating modes and full thermostatic control quite useful for customizing our comfort level.
FLOWBREEZE Portable Cooler
We recommend this versatile 3-in-1 unit for its efficient cooling and user-friendly features.
Pros
- Multi-functional: air cooler, conditioner, and fan
- 120° oscillation for even air distribution
- Quiet operation at 49 dB
Cons
- Limited cooling capacity compared to traditional ACs
- Requires regular water refills
- May not be effective in very hot climates
The FLOWBREEZE portable cooler impressed us with its versatility. We found the 3-in-1 functionality convenient, allowing us to switch between cooling, humidifying, and fan modes effortlessly.
During our testing, the 120° oscillation feature stood out. It effectively distributed cool air throughout our 300 sq. ft. room. The internal turbo technology provided a strong airflow without excessive noise, maintaining a peaceful environment at 49 dB.
We appreciated the 2-gallon water tank, which lasted about 10 hours before needing a refill. The included ice packs enhanced the cooling effect, though we noted it’s not as powerful as traditional air conditioners. For smaller spaces or mild climates, this portable unit offers a practical and energy-efficient cooling solution.
SereneLife 8000 BTU Portable AC
We recommend this versatile unit for its powerful cooling and quiet operation in small to medium-sized rooms.
Pros
- Effective cooling for spaces up to 300 sq ft
- 3-in-1 functionality (AC, dehumidifier, fan)
- Ultra-quiet operation
Cons
- May struggle in larger spaces
- Single hose design
- Some users report control issues
We found the SereneLife 8000 BTU Portable AC to be a solid performer in our tests. Its compact size and universal casters made it easy to move between rooms. The unit cooled our 250 sq ft bedroom quickly and efficiently.
The 3-in-1 functionality impressed us. We appreciated the dehumidifier mode during humid days, and the fan-only option for milder evenings. The remote control allowed us to adjust settings from across the room.
While mostly quiet, we noticed a slight hum during operation. It wasn’t disruptive, but light sleepers might want to consider this. The window kit was straightforward to install, though we recommend having an extra pair of hands for the task.
COOLECH 42″ Evaporative Air Cooler
This versatile and efficient air cooler offers excellent cooling performance for medium-sized rooms.
Pros
- Multiple modes and speeds for customized cooling
- Large 1-gallon water tank for extended use
- Energy-efficient with low power consumption
Cons
- Limited cooling capacity compared to traditional AC
- Requires regular maintenance and refilling
- May not be effective in very humid environments
We found the COOLECH 42″ Evaporative Air Cooler to be a solid choice for those seeking affordable cooling. Its 3-in-1 functionality as a fan, air cooler, and humidifier impressed us. The 4 modes and 3 speeds allowed us to tailor the cooling to our preferences.
The 1-gallon water tank provided ample cooling time, lasting up to 8 hours on a single fill. We appreciated the inclusion of ice packs for enhanced cooling. The unit’s 80W power consumption was notably efficient, potentially reducing electricity costs.
We were pleased with the quiet 50dB operation and the convenient remote control. The oscillation feature and long air outlets effectively distributed cool air throughout our space. While it may not replace traditional AC in extremely hot conditions, we found it an excellent supplementary cooling option.
AIRTHRYL Portable Cooler
We recommend this versatile 3-in-1 portable cooler for its impressive features and cooling capabilities.
Pros
- 3-in-1 functionality (cooler, AC, fan)
- Large 2-gallon water tank
- 75° oscillation for even cooling
Cons
- Limited cooling area (280 sq.ft)
- Requires regular water refills
- May not be suitable for very humid climates
This AIRTHRYL portable cooler impressed us with its versatility. We found the 3-in-1 functionality particularly useful, allowing us to switch between cooling, air conditioning, and fan modes effortlessly.
The 2-gallon water tank is a standout feature. It provided continuous cooling for 7-10 hours without needing refills. We appreciated the visible water level indicator, which made maintenance simple.
During our tests, the 75° oscillation effectively distributed cool air throughout our space. The remote control was handy for adjusting settings from across the room. At 59dB, it’s relatively quiet, making it suitable for bedrooms or offices.
Portable Air Conditioner Buying Guide
In this Buying Guide, we’ll cover several important topics that should assist you in your buying decision.
Portable vs Window Air Conditioners with Pros & Cons
In general, homeowners give higher ratings to window air conditioners than to portable air conditioners.
Perhaps these portable air conditioner pros and cons will shed light on why this is true.
Portable Free Standing AC Pros Compared to Window Air Conditioners
- They can be moved around a little bit, as their hoses are 3.5 to 5.5 feet in length
- They are easier to move from room to room since they have caster wheels
- They take up less window space, so the view isn’t as obscured
- There no risk of them falling out of the window and causing injury or damage
- Homeowner Associations do not object to portable AC window kits, but many object to window air conditioners
Portable AC Cons Compared to Window Air Conditioners
- Portable ACs cost more for units that are the same size
- They do not cool as effectively, since they pull warm air into the house (See BTU Ratings – below)
- They have a higher rate of mechanical failure than window ACs
Also Read: Window vs Portable AC: Which One is Better?
Portable ACs vs Whole-house ACs
If you have central AC, is there a place in your home for a portable air conditioner?
Potentially yes. Here’s what a portable AC can do for you. The same advantages apply to a window AC.
- These units can cool rooms that aren’t adequately reached by central AC – those rooms that face west or south, or second-floor rooms, rooms that always seem warmer than the rest of the house.
- Cooling just the room you’re in, such as a bedroom at night or home office during the day, allows you to turn up the thermostat on the central AC with the result of using less energy at less cost and still remain comfortable.
Portable AC vs Evaporative Air Cooler
Evaporative air coolers are sometimes called mini air conditioners or personal air conditioners. They are not air conditioners. Here’s an overview of how they work.
1. Water is poured into a tank (and some also have garden hose connections for constant operation).
2. The water is wicked up or absorbed by absorbent material.
3. A fan pulls air through the material which has the effect of causing heat in the air to evaporate water out of the absorbent material. As you likely know, evaporation removes heat, and that makes the air cooler. Think about water evaporating off your skin – it makes your skin cooler. The cooler air is blown out of the unit. A good evaporative air cooler can lower the temperature of the air by 8 to 20 degrees.
Portable AC Advantages
- They remove moisture from the air. An evaporative air cooler adds moisture.
- They remove heat from the room. An evaporative air cooler blows cooler air in one or two directions, but the heat removed remains in the room, just not in the air you feel blowing your way. In other words, in an enclosed room, the temperature cannot be lowered using an evaporative cooler.
- They work in any region of the country, including very humid areas. Evaporative air coolers are effective where humidity is relatively low. Where humidity is high, the water won’t evaporate as well, if at all, at evaporation is necessary for removing heat from the air.
Evaporative Cooler Advantages
- They generally cost less than a portable AC.
- They are lighter and easier to move from place to place.
BTU Ratings: ASHRAE vs US DOE Ratings
This is the so-called elephant in the room that some portable AC manufacturers don’t like to discuss.
These units simply are not as efficient as other AC types. Here is why – and why there are two separate BTU rating systems.
The problem: When air is exhausted out the window hose, it creates negative air pressure indoors.
The result: As air goes out, air is sucked indoors through any drafty location. No home is airtight. The air drawn in is warm, humid air.
The bottom line: The effectiveness of a portable AC is significantly diminished by the air infiltration.
Two Rating Systems
The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) tests the basic effectiveness of air conditioners of all types, as it has done for decades. One test – How many BTUs of heat can a unit remove from the air per hour. The test does not factor infiltration – how much heat is sucked back into your home.
This infiltration is not a factor with a window AC or central air conditioning.
At some point, this built-in inefficiency came to the attention of the US Department of Energy. For the sake of giving an accurate rating to consumers, the DOE developed the Seasonally Adjusted Cooling Capacity (SACC) that does account for infiltration.
While there isn’t a formula that covers all portable air conditioners, the DOE SACC rating is usually 50% to 60% of the ASHRAE rating for how many BTUs the unit can remove per hour. Examples included for models we’ve reviewed are:
- 14,000 ASHRAE = 7,500 SACC
- 12,000 ASHRAE = 6,500 SACC
- 10,000 ASHRAE = 6,000 SACC
- 8,000 ASHRAE = 4,500 SACC
- 6,000 ASHRAE = 3,000 SACC
Not all product pages list the SACC rating. Many list them both. Only a few list just the SACC rating. If there is only one BTU rating given, it is probably the ASHRAE rating and you should consider that the SACC rating is about half.
You can also go by the chart in the next section.
Sizing your Portable Air Conditioner
It is important to buy a unit rated to serve the amount of space you have – or more. With central air conditioners, you should not choose one that is too big for your home. But because of efficiency issues with portable free standing air conditioners, going a size up isn’t an issue.
This chart is a starting point. See the addition points below it for properly sizing a portable AC.
ASHRAE BTUs | Square Feet |
---|---|
6,000 | 100-200 |
8,000 | 150-250 |
9,000 | 200-300 |
10,000 | 250-350 |
12,000 | 300-400 |
14,000 | 350-450 |
We recommend that you choose a unit that is 1,000 BTUs larger than the chart recommends for each of these issues:
1. Ceilings higher than 8 feet.
2. The room faces south or west and isn’t shaded by trees.
3. Is a room often occupied by 3 or more people.
4. Is for a kitchen, since cooking makes the room hotter and more humid.
How to Make a Portable AC More Efficient & Effective
These home efficiency tips will help you air condition and heat your home more efficiently.
1. Make sure your home’s attic has the appropriate amount of insulation.
2. Use weather stripping around drafty doors and windows.
3. When you upgrade windows and doors, choose those with better insulation values.
Specifically for portable air conditioners:
1. Choose one with a programable timer, so you can determine when the unit comes on and shuts off. That way, you don’t have to leave it on while you’re away to have the space comfortable when you get home. Program the AC to come on an hour before you arrive.
2. Consider a unit with WiFi. It is the surest way to reduce unused air conditioning. When you’re on your way home, use the app to turn on the air conditioner or to turn down the unit’s thermostat to a more comfortable level.
3. Use the foam that is included with your window kit to create as airtight a connection as possible.
Frequently Asked Questions
Portable air conditioners offer versatile cooling solutions for various spaces. We’ll address common questions about their functionality, performance, and installation.
How does a portable air conditioner without a hose work?
Portable air conditioners without hoses typically use evaporative cooling technology. They circulate water through a cooling pad, which absorbs heat as air passes through it. This cooled air is then blown into the room by a fan.
What are the best portable air conditioners for cooling a large room?
For large rooms, we recommend units with higher BTU ratings, typically 12,000 BTU or more. Dual-hose models often provide more efficient cooling for spacious areas. Look for features like programmable timers and multiple fan speeds for optimal performance.
What factors should I consider when choosing a portable air conditioner for my bedroom?
When selecting a portable AC for a bedroom, consider noise levels, size, and energy efficiency. Look for units with sleep modes and quiet operation. Ensure the BTU rating matches your room size for effective cooling.
What are the advantages of using a mini portable air conditioner?
Mini portable air conditioners are compact and easy to move. They’re ideal for small spaces or spot cooling. These units often consume less energy and are more affordable than larger models.
How do consumer reports rate portable air conditioners in terms of efficiency and reliability?
Consumer reports often evaluate portable ACs based on cooling capacity, energy efficiency, and noise levels. Top-rated models typically offer consistent performance, user-friendly features, and good value for money.
What are the requirements for venting a portable air conditioner in a space without windows?
In windowless spaces, consider venting through a wall, ceiling, or door. Use a venting kit designed for your specific unit. Ensure proper sealing around the vent to maintain efficiency. Some models can be vented through a drop ceiling or into an adjacent room.