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The 13 Most Energy Efficient Portable Air Conditioner Of 2023

The Airo Comfort Portable Air Conditioner is much sought-after because of its 3 fan speeds, silent operation, and quick cooling power. Portable air conditioners from Midea and LG are also worthwhile, compatible with smart assistants like Alexa and Google Assistant.

Most Energy Efficient Portable Air Conditioner

You don’t necessarily need central air conditioning to cool the space in summer. Instead, the right portable AC units with high cooling power can deliver better results, while also purifying the indoor air.

But how to cool a room without increasing energy consumption? The solution is to invest in an energy-efficient product, and today I will review the best portable air conditioner units that are a sensible addition in most homes.

Most Energy Efficient Portable Air Conditioners

1. Airo Comfort Portable Air Conditioner – Best Powerful Portable Air Conditioner

AIRO COMFORT Portable Air Conditioner 14000 BTU for Room 700...
  • Powerful & Efficient Air Conditioner - Keep your room, home,...
  • Simple and Easy to Use - Our innovative Air Conditioning...

Starting with the cooling power, the Airo Comfort Portable Air Conditioner is a 14,000 BTU unit that works well for cooling small to medium-sized spaces. Upon testing, I discovered it is usable in spaces up to 500 square feet, thanks to the 3 fan speeds, which makes it more powerful than other portable air conditioners. 

This compact portable AC unit has a seasonal energy efficiency rating of 14, so it cools a space without increasing energy consumption. Efficient energy use is further enhanced by the 24-hour programmable on/off timer and sleep mode. 

What sets it apart from an average portable air conditioner is its 3-in-1 operation mode. Along with an air conditioner, this portable unit serves as a fan and a dehumidifier. That means you can use it to reduce moisture levels in a space without turning on a dehumidifier. 

Contrary to my expectations, it doesn’t produce loud noises when running. Producing about 50 dB (decibel) of noise, the Airo Comfort air conditioner allows users to carry on their chores without unnecessary disturbance. 

When it comes to the air filter, it’s quite similar to a window air conditioner because you can remove, wash and reuse it. However, you’ll have to wash it every 2 weeks only then will the unit remain efficient. 

Moreover, the instructions in the product manual are easy to interpret. By just skimming through them once, I was able to assemble the unit without using any special tools. The package also includes 4 heavy-duty wheels that make it easy for users to move this AC from one corner or room to another. 

Besides its functionality, its stylish design has earned it the top position. Finished in white/black with gunmetal accenting, this portable air conditioner blends well with every décor, adding an understated charm to the space. 

In the front is the LED display to view the temperature, and you can turn off the light at night. And towards the top of the unit is a control panel for adjusting the settings; however, a remote control is included for the user’s convenience. 

Cooling Power: 14,000 British Thermal Units | Seasonal Energy Efficiency Ratio: 14 | Sound Level: 50 dB | Floor Area: 550 square feet

2. Whynter ARC-122DS Portable Air Conditioner – Best With Activated Carbon Filter

Whynter ARC-122DS 12,000 (7,000 BTU SACC) Elite Dual Hose...
  • Award-Winning Portable AC Unit: Rated Best Overall Portable...
  • Powerful Yet Quiet: The ideal AC unit for bedrooms, this...

Despite weighing 65 pounds, the Whynter ARC-122DS Portable Air Conditioner is sleeker than the Airo Comfort. Sitting on 4 caster wheels, this AC adds elegance to whichever space you place it in, thanks to the gray finish that complements a variety of decors.

Coming with a seasonal energy efficiency ratio of 13, this portable AC has a cooling capacity of 12,000 BTU. So, when installed in my office space of about 400 square feet, it did a great job of cooling the room even when the temperature was soaring outside. 

Though it isn’t Energy Star-certified, it did reduce my energy consumption. Unlike a few other portable air conditioner units, it comes equipped with dual hoses– an intake hose and an exhaust hose. Most importantly, when tested against a single hose unit, it cooled a room better.

Like most portable air conditioners, it has 3 operational modes– air conditioner, fan, and dehumidifier. And since its dehumidifying capacity is 76 pints per day, it reduces moisture levels in spaces that are very damp. 

Running at 52 dB, it produces less noise, similar to that of an electric fan, allowing users to sleep, read or work with ease. 

With air louvers resting on top of the unit, the digital control panel is ingeniously added to the front. What’s even better is that the control panel is equipped with most buttons a user will need to adjust the AC temperature to their preference. 

The rest of the settings can be adjusted via the remote control supplied with this portable air conditioner. Instead of the ozone-depleting refrigerant, this portable AC is equipped with R-410A green and CFC-free refrigerant. Even the components used in this air conditioner are lead-free and RoHS-compliant. 

I even discovered that it improves indoor air quality by sucking in dust, dirt, and pet danders, while its activated charcoal air filter traps odors. And because of the auto restart feature, this unit is excellent for places prone to frequent power outages. 

Cooling Power: 12,000 British Thermal Units | Seasonal Energy Efficiency Ratio: 13 | Sound Level: 52 dB | Floor Area: 400 square feet

3. Midea Duo Smart HE Inverter Portable Air Conditioner – Best With Variable-Speed Inverter Technology

Midea Duo 14,000 BTU (12,000 BTU SACC) High Efficiency...
  • INNOVATIVE DUO HOSE DESIGN - Midea's industry-first dual...
  • INVERTER TECHNOLOGY - Engineered with the variable-speed...

Coated in a black finish, the Midea Duo Smart HE Inverter Portable Air Conditioner looks elegant in whichever room you place it. Be it traditional black-white or contemporary gray-green décor, this unit blends well with every color scheme. 

At first glance, it may look like a standard portable air conditioner, but the engineers have designed this all-black AC with an industry-first hose-in-hose design. It allows the unit to suck up indoor air and expel it outdoors while preventing hot air from seeping in through crevices. 

Besides, it is engineered with variable-speed power inverter technology, so it cools a room using relatively less energy than traditional portable units. Thus, it keeps me cool during hot summer days without mounting my utility bills. 

Engineered with an advanced air duct system and 26 feet of airflow, this 14,000 BTU air conditioner cools an indoor space quickly and efficiently. At the lowest settings, this portable AC (energy efficiency unit) produces only about 42 dB of noise. 

But this dual inverter AC operates quietly, even at the highest settings, because it generates about 52 dB of sound, equivalent to a refrigerator. 

Like most dual hose units, it comes with a control panel and remote control for tweaking the settings. Moreover, its compatibility with smart assistants like Alexa and Google Assistant allows you to control it even when away from home. 

Another feature that sets it apart from other dual hose units is its dynamic cool swing, with which changing the airflow direction is easy. 

Because it weighs 77 pounds, portability could be an issue for some. With this AC, you need not spend money on electric heaters because it comes with a heat pump. And doubling as a heater, it prevents mold from thriving by removing over 50 liters of moisture daily. 

Cooling Power: 14,000 British Thermal Units | Seasonal Energy Efficiency Ratio: 12.3 | Sound Level: 52 dB | Floor Area: 550 square feet

4. LG Smart Portable Air Conditioner – Best With Heating And Cooling Function

LG Portable Air Conditioner, 10,000 Cooling/12,000 BTU...
  • [Maximum Cooling & Heating] Cooling & Heating Coverage up to...
  • [Multipurpose 4 In 1 Function] Use cool mode for powerful...

Choosing a heating, ventilation, and air conditioning system sure costs more money. Instead of settling for one of the two, I suggest you bring home the LG Portable Air Conditioner that works both as a heater and a cooler. 

Before anything else, I’d like to mention that this air conditioner is a free-standing unit. What that means is you need not break a sweat or call a professional to install it in your home, like window units. Once out of the box, connect the exhaust hose, place it near a window, and plug it in– it will supply cool air throughout the space. 

As its cooling power is 10,000 BTU, I’d recommend it for spaces less than 500 sq ft. And for spaces smaller than that, you can go for other sizes because the brand supplies it in 4 cooling modes. 

What’s more, the LG portable air conditioner is a 4-in-1 unit featuring cool, fan, dry, and heat modes. While the fan mode circulates cold air and expels heated air, the dry mode dehumidifies a space. And in winter, you can survive the biting cold by switching to the heat mode, it will supply warm air throughout the space. 

Moving on to the fan settings, you can adjust the fan between 2 settings only, unlike other air conditioners with 3 settings.

Meanwhile, the design is sleek and compact and doesn’t occupy much floor space, so you can use it in smaller spaces without any trouble. Towards the top, you’ll find air louvers and a control panel. 

Fan speed, timer, or temperature – you can switch among a variety of settings using the intuitive and easy-to-use control panel. The settings that aren’t displayed on the control panel can be changed using the remote control. 

In an effort to live up to its aim of helping customers, this LG unit is engineered with LG ThinQ technology, meaning it’s compatible with virtual assistants. Without touching the control panel or pressing buttons on the remote control, the settings on this unit can be adjusted via simple voice commands. 

Cooling Power: 10,000 British Thermal Units | Seasonal Energy Efficiency Ratio: 7.83 | Sound Level: 53 dB | Floor Area: 450 square feet

5. Whynter ARC-14S Dual Hose Portable Air Conditioner – Best With Auto Drain Technology

Whynter Portable Air Conditioner 14,000 BTU with Dual Hose...
  • Award-Winning Portable AC Unit: Awarded Good Housekeeping's...
  • Powerful Yet Quiet: The ideal AC unit for bedrooms, this...

Mobile yet powerful, the Whynter ARC-14S Dual Hose Portable Air Conditioner has a cooling power of 14,000 BTU– ideal for 500 sq. ft spaces. 

Engineered to serve as a cooler, fan, and dehumidifier, this portable air conditioner comes with 3 settings. With just the click of a button on the remote control or the digital panel, you can adjust the function of this AC unit. 

Whynter allows users to set the temperature between 61°F and 89°F in cool modes, like any other portable AC unit. It can also remove up to 71 pints of moisture per day in dehumidifier mode, so it’s ideal for a residential setting. 

With its 3 fan speeds, users get the freedom to customize the cooling experience. Even the timer is programmable for up to 24 hours, which makes this device all the more user-friendly. 

Instead of single ducts, this portable AC unit comes with 2 hoses– one expels hot and humid air, whereas the other minimizes negative air pressure. 

What makes it better than single-hose units is its auto-drain technology. Because of this, this AC unit uses the moisture stored during the cooling process to dehumidify a space. 

To my disappointment, this portable AC unit is slightly loud when running at the highest speed. But installing the unit won’t consume much of your time and even maintenance is trouble-free. 

The pre-filter, like that of a window unit, purifies indoor air by trapping pet hair, dust, and dander. After a period of time, you can remove the filter, wash it and reuse it. Better yet, the unit features an activated carbon filter that sucks up odors, toxic gasses, smoke, and chemical fumes. This makes for an excellent option for people suffering from respiratory issues. 

This air conditioner is further equipped with a CFC-free R-32 refrigerant and lead-free RoHS-compliant internal components, unlike other portable AC units. I also found 4 caster wheels in the package, which allowed me to move this portable AC unit from my office space to the living room. 

Best of all is that in case of a power outage, the unit will restart by itself, thanks to the auto-restart feature. 

Cooling Power: 14,000 British Thermal Units | Seasonal Energy Efficiency Ratio: 7.69 | Sound Level: 56 dB | Floor Area: 500 square feet

6. Rosewill Portable Air Conditioner – Best With Self-Evaporating System

Rosewill Portable Air Conditioner 12,000 BTU, 4-in-1: AC,...
  • 4 Mode Options: Air Conditioner, Fan, Dehumidifier, and...
  • Programable Convenience: Three fan speeds help control...

Want an air conditioning unit that can be your perfect companion on camping trips? Well, the Rosewill Portable Air Conditioner will fit the bill because it cools up to 300 sq ft of space efficiently. 

Standing at 16”, this portable air conditioner is relatively compact, so it doesn’t require much space. Furthermore, this space-saving portable AC comes with 4 modes– air conditioner, fan, dehumidifier, and heater. 

Not only is it space-saving, but it also is a highly versatile unit because it is usable all year round. In summer, it can be used as an air conditioner, whereas you can use it as a heater during winter. And on rainy days, simply turn it on, and switch to the dehumidifier mode, and it will reduce humidity levels quickly. 

Like window AC units, the air filter of this portable air conditioner is washable. So, whenever dirt, debris, pet danders and other impurities are trapped in it, you can take it off and clean it without much hassle. 

Rosewill didn’t disappoint me when it came to advanced features. Quite similar to the other portable air conditioners on the list, it is integrated with intelligent functions like automatic on/off with a programmable 24-hour timer and sleep mode. Besides adding to the user’s convenience, it helps in energy conservation. 

What’s more, dual LED digital touch display panels are equipped atop the unit, from where you can change the timer, fan, and modes and set the direction of the air louvers. Further, the convenience is enhanced with the full-function remote control. 

Integrated with innovative self-evaporative technology, this portable air conditioner withdraws moisture from the inner air and expels it into the outdoor air. 

Not to forget, setting this unit up isn’t troublesome; rather, it’s an easy chore. Just go through the instructions properly, so you don’t get stuck in the middle. Noteworthily, the brand supplies every accessory needed to install the unit, from the exhaust heat pipe to washers and screws. 

Note that this is quite a heavy unit, so moving it without caster wheels will be slightly challenging. So, make sure you fit them right after unboxing the unit. 

Cooling Power: 12,000 British Thermal Units | Seasonal Energy Efficiency Ratio: 7 | Sound Level: 56 dB | Floor Area: 300 square feet

7. DeLonghi Portable Air Conditioner – Best With Cool Surround Smart Sensing Technology

De'Longhi Black Portable Air Cooler with Remote Control and...
  • 3-in-1 Unit Delivers a Precise, Targeted Cool.wattage : 1345...
  • COOLS EXTRA LARGE ROOMS. Supplies 14000 (ASHRAE)/8600 (SACC)...

Sure, a portable air conditioner with a cooling ability of 8000 BTU won’t be effective in cooling a large room of 700 sq. ft. So, after a lot of research, I found the DeLonghi Portable Air Conditioner and decided to test it out in my dining room. 

Ingeniously built by experts, this portable air conditioner cools a room in less than 30 minutes by distributing cool air evenly and efficiently. Integrated with 3 fan modes, this portable air conditioner is equipped with motorized louvers, which can be adjusted as per your preference. 

To offer more efficient cooling than the standard portable air conditioners, the brand has engineered it with cool surround smart sensing technology, offering personalized comfort. That means it monitors the atmosphere– humidity, temperature, and your position– and alters the settings accordingly. 

Although it isn’t certified by Energy Star, it helps users save up to 30% on their utility bills, thanks to the eco-real feel technology. Because of this exclusive technology, this portable air conditioner optimizes comfort without consuming too much energy.

However, note that the combined energy efficiency ratio of this portable unit is 5, which is less than others on the list. 

Like most portable air conditioners, it is a 3-in-1 unit featuring air conditioning, a fan, and a dehumidifying system. On the hottest days, run this unit as an air conditioner to beat the heat and switch to the dehumidifier mode if the humidity levels of your room rise. 

Or run the fan-only mode if you want to stay cool without lowering the temperature of your entire room. 

Despite being such a powerful air conditioner, I was surprised to discover that it’s a quiet unit. After some research, I learned that it’s engineered with new super quiet technology, which is why it reduces noise by up to 4 dB. 

Installing this portable air conditioner is quite easy, as the package includes everything you’ll need to assemble the unit. From the window kit to the screws, the brand supplies everything to ensure you have a hassle-free experience. 

I would have liked this device more had the brand supplied a slightly longer hose like other portable air conditioners come with. 

Cooling Power: 14,000 British Thermal Units | Seasonal Energy Efficiency Ratio: 5 | Sound Level: Not disclosed | Floor Area: 700 square feet

8. COSTWAY Portable Air Conditioner – Best With Safety Features

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If, besides comfort, safety is what you’re concerned with when choosing a portable air conditioner from Amazon, look no further than the COSTWAY Portable Air Conditioner. Offering multiple protection features, this portable air conditioner ensures maximum comfort without compromising on safety. 

Among the 3 protection features, the first is the anti-freeze protection that prevents the unit from freezing in extremely cold conditions. The second protection feature found on this portable air conditioner is anti-water protection that guards the unit against water. 

Finally comes the compressor delay protection, which safeguards the compressor from turning on/off too quickly. 

With 8000 BTU cooling power, this portable air conditioner is highly efficient in cooling a small space of about 230 sq ft. And like other portable air conditioners, it’s a versatile unit, as it can be used as a fan and a dehumidifier. 

In the air conditioning mode, the temperature can be adjusted between 60°F and 86°F. When used as a dehumidifier, this unit removes up to 50 pints of moisture, reducing the humidity level by up to 40%. Or simply switch to the fan mode and adjust the airflow up/down as you prefer. 

Moving ahead, this portable air conditioner can be controlled in 2 ways– a handy remote control and an intelligent touch panel whose LED light is slightly bright. 

Timer, mode, fan speeds, temperature, and turning on the sleep mode– all this can be done via the touch panel at the top of the unit. As far as the remote control is concerned, you can convert the temperature from Celsius to Fahrenheit, which cannot be done using the control panel. 

Weighing about 61 pounds, this portable air conditioner is quite lighter than other portable AC units, so portability isn’t an issue. Other than that, what makes this air conditioner easy to move are the 4 casters towards the bottom that glides smoothly when the unit is moved. 

One thing that I particularly liked about this portable air conditioner is its carry handle equipped on the back towards the top. Because of this handle, lifting the portable air conditioner or transporting it has become easy. 

Cooling Power: 8,000 British Thermal Units | Seasonal Energy Efficiency Ratio: 5 | Sound Level: 56 dB | Floor Area: 230 square feet

9. Ivation Portable Air Conditioner – Best Smart App Control Cooling System

Ivation 13,000 BTU Portable Air Conditioner with Wi-Fi for...

Requiring 1200 W (watt) to operate, the Ivation Portable Air Conditioner is a free-standing unit that doesn’t take up much floor space. What’s more, this travel-friendly cooling tower boasts a sleek profile and is compact, with omnidirectional wheels equipped on each of the 4 sides. 

Much like the previous portable air conditioner, it comes with a built-in handle that allows for easy portability. Either roll the unit across the space or simply pick it up via the handle and take it wherever you want. 

Furthermore, this 13500 BTU portable air conditioner is a 3-in-1 unit serving as a fan, cooling, and dehumidifying device. Besides the fan speed, the direction of airflow can be adjusted on this portable AC. After adjusting between high, low, and medium settings, turn on the “swing” mode, and the air will flow in all directions. 

Other than the LCD display, the settings on this portable air conditioner can be tweaked using the remote control. Compared to other portable air conditioners, the remote control features an easy-to-read LED display, which makes it easy to adjust the settings in the dark. 

That’s not all; this Wi-Fi-enabled portable air conditioner can be conveniently controlled through a smartphone. Simply download the “My Ivation” app, connect it to your portable AC, and change the setting even on the go. To check connectivity, you will have to keep tabs on the Wifi status light on the remote control. 

With a seasonal energy efficiency ratio of 5, surprisingly, this portable air conditioner consumes less energy than most portable AC units. 

Along with that, it’s packed with state-of-the-art safety features like thermal and overflow protection, integrated frost protection, and automatic compressor protection. Also, this portable AC comes with a rear cord storage hook. 

Ivation with this AC offers 2 ways of draining water– you can either allow the internal receptacle to collect water or attach a hose for continuous drainage. 

I also found that its exhaust hose is flexible and can be extended up to 59”. Even installation isn’t tricky, as the instructions are easy to decipher; however, it isn’t covered by a warranty. 

Cooling Power: 13,000 British Thermal Units | Seasonal Energy Efficiency Ratio: 5 | Sound Level: 55 dB | Floor Area: 500 square feet

10. Wamife Portable Air Conditioner – Best With Turbo Function And Dimmable LED Display

Wamife 12000 BTU Portable Air Conditioner, Smart Indoor Air...
  • 【Up to 700 Sq.Ft.】 Our 8150 BTU (DOE) | 12000 BTU...
  • 【Smart Controls From Anywhere】You can start or stop...

Compatible with smart assistants like Amazon Alexa and Google Home, the Wamife Portable Air Conditioner runs on R410A refrigerant, which is more energy efficient than others. 

Before I get into the nitty-gritty of this portable air conditioner, I’d like to mention that it’s usable throughout the year because it’s a heating and cooling system. Its versatility doesn’t end here; as a matter of fact, it’s a 4-in-1 unit– heater, cooler, dehumidifier, and fan. 

To make a room cozy, setting the temperature between 55°F and 81°F in heat mode will supply warm air. Meanwhile, you will have to set the temperature between 64°F and 90°F to cool a space. 

On days when the temperatures are soaring, turning on the Turbo function will cool your room quickly and efficiently without consuming a lot of electricity. 

Even the fan speed on this portable air conditioner is adjustable. Adding to that is its swing function, which moves the louvers 60 degrees up and down. 

Likewise, this portable AC is integrated with a “sleep” mode for a comfortable sleeping experience. 

What sets it apart from other portable air conditioners is the “smart” mode, which sets the temperature automatically on the basis of your room temperature. In the dehumidifier mode, it can remove up to 80 pints of water from the air. Note that its filter needs to be washed twice every month. 

As for the design, this compact portable air conditioner is finished in white with a control panel displayed on the top. While you can control the AC unit from the panel, a remote control is supplied with the unit so that you can adjust the settings from your comfort zone. 

Or you can simply command Google or Alexa to adjust the unit to whatever setting you want. That’s because this portable air conditioner is compatible with smart devices, making it all the more versatile. 

Even when it comes to aesthetics, this portable air conditioner is no less than other portable AC units. Sporting a white finish, this 65-pound AC complements a variety of décor. Adding to that is its compactness and 4 caster wheels that make it portable. 

Cooling Power: 12,000 British Thermal Units | Seasonal Energy Efficiency Ratio: 5 | Sound Level: 50 dB | Floor Area: 400 square feet

11. Windmill Air Conditioner – Best Window AC Unit With Energy Star

Windmill - The Windmill AC Modern Air Conditioner - Easy...
  • Window AC Units Designed With You in Mind: Curved edges and...
  • Includes Pre-Built Install Kit For Easy Installation: A...

Anyone who’s scouting for an energy-efficient portable air conditioner for a room with limited floor space must check out the Windmill Air Conditioner. 

Unlike most portable AC units, it isn’t a free-standing air conditioner; rather, it’s supposed to be mounted on the window. As for the energy efficiency claims, this portable AC doesn’t consume as much energy as the standard units. Moreover, its claims are backed by a 5-star rating from Energy Star– so it’s safe to say that this portable AC is energy-efficient. 

On top of that, it relies on R-32 refrigerant that conveys heat efficiently and reduces electric consumption better than other older refrigerants. 

Prior to installation, assembly isn’t required because it comes pre-assembled, so it’s ready to be mounted right out of the box. Along with a window kit is supplied an install guide, which contains easy-to-follow instructions. 

Therefore, installation won’t be much of a task, even though it’s a window unit. Just keep in mind that this portable air conditioner is meant for windows of or more than 14 inches.  

With clean lines and curved edges, this portable AC is coated in white, which makes it an excellent option for modern homes. 

On the forepart of the AC is an LED display to show the temperature in a dimly lit environment. What’s even better is that the LED light is dimmable– this feature will prove useful during the night, as you’ll be able to sleep without any disturbance. 

Like other portable AC units, you can adjust the settings via the on-unit buttons or the remote control. But that isn’t the only way to control the unit– users can customize the cooling experience via their smartphones or smart devices. 

As far as functionality is concerned, this portable AC, like other portable air conditioners, offers 3 fan speeds. Besides, there are 3 cooling settings from which you can customize the unit– cool, eco, and fan. 

Inside the unit sits an antimicrobial-protected mesh filter and an activated carbon insert that filters the air to improve the air quality of the space. Much like other portable air conditioners, the filter is washable and reusable. 

Cooling Power: 8,300 British Thermal Units | Seasonal Energy Efficiency Ratio: 6.2 | Sound Level: Not disclosed | Floor Area: 350 square feet

12. Dreo TwinCool Smart Inverter Portable Air Conditioner – Best Quietest Portable Air Conditioner

Dreo TwinCool 12000 BTU Smart Inverter Portable Air...
  • Dual Hose, Double Effect: The hose-in-hose innovation...
  • Customize Your Comfort: With 5 powerful modes...

Prefer an air conditioner whose noise output is low? Then the Dreo TwinCool Smart Inverter Portable Air Conditioner would fit the bill because it produces about 43 dB of noise, which is why it’s the quietest portable AC on the list. 

Even though the quietest of all, this portable air conditioner is no less than others when it comes to performance. With the hose-in-hose innovation, this dual hose system cools a space efficiently by expelling hot air and circulating cold air. 

Next comes the cooling capacity, which is 12,000 BTU– while testing, I found that it blows cold air as far as 28 feet. So, it’s usable in a variety of environments, from bedrooms and living rooms to garages. 

Other than the cool, fan, and dehumidifier modes, this portable air conditioner comes with auto and sleep modes. On this AC unit, the temperature is adjustable from 60°F to 86°F, so it’s a viable option to beat the summer heat. 

Running this portable air conditioner wouldn’t skyrocket your utility bills either because it’s an energy-efficient unit. So, it regulates the cooling in accordance with the temperature of the room. 

Still doubtful if it really is an energy-efficient portable air conditioner? Well, it has received a 5-star rating from Energy Star that testifies to its claims of saving energy. 

Moving to the design, sitting on the slanted top is a control panel using which the unit can be controlled. Alternatively, it comes with a remote control to allow users to customize the functions conveniently. 

Standing 34.05” tall, this portable AC boasts a compact yet slightly heavy body. Even then, moving it from one space to another isn’t an issue because it’s equipped with 4 caster wheels. I even like that it’s polished in white, adding class and elegance to whichever space it’s placed in. 

Moreover, as it comes with a detailed instruction manual and a window kit, installing this AC isn’t a time-consuming task.

Cooling Power: 12,000 British Thermal Units | Seasonal Energy Efficiency Ratio: 8.9 | Sound Level: 43 dB | Floor Area: 450 square feet

13. Pasapair Portable Air Conditioner – Best With Innovative Ventilation Technology

Pasapair 10000BTU WiFi Portable Air Conditioner – Portable...
  • 🌼 Remote & Voice Control: You can control the humidifier...
  • ⚽ Efficient & Powerful Cooling: The air conditioner has a...

Constructed out of plastic and metal, the Pasapair Portable Air Conditioner comes with rolling wheels and an in-built handle. Without these 2 features, moving the unit between rooms wouldn’t be an easy task. 

With a dimension of 11.81” D x 11.81” W x 27.56” H, this energy-efficient portable air conditioner can be placed in any corner of the room. Because of its sleek and lightweight design, storage is also not an issue with this AC unit. 

Considering its weight and dimensions, I thought it wouldn’t be as efficient in cooling a room. But to my surprise, this 8,000 BTU energy-efficient portable air conditioner lowers the temperature of small spaces quickly and efficiently. 

After testing it in various rooms, I found it works best for rooms up to 300 sq ft. 

As is expected, this is a 3-in-1 device, which can be used as a fan and a dehumidifier besides an air conditioner. Even when switched to the dehumidifier mode, it performs at optimum capacity and removes moisture while purifying the indoor air. 

Designed with innovative ventilation technology, it features a built-in blue hydrophilic dust-proof thermal coating to direct cold water via a honeycomb screen to cool a room. Like other energy-efficient portable air conditioners, the settings of this unit from Pasapair can be customized with the digital control panel and remote control. 

Except for the button to switch the temperature from Celsius to Fahrenheit, the digital control panel features all the settings. Among the various features, I like the 24-hour timer program, which is adjustable. However, you do not get much freedom when it comes to adjusting the fan speed because it can be adjusted only between high and low. 

Instead of adjusting the temperature to 86°F like most energy-efficient portable air conditioners, it allows temperature adjustment up to 90°F. At the same time, this portable air conditioner is eco-friendly because it’s equipped with the environment-friendly refrigerant R-410A. 

Plus, with a safety child lock and reusable and washable filter, this energy-efficient air conditioner is a dependable option for summer. 

Cooling Power: 8,000 British Thermal Units | Seasonal Energy Efficiency Ratio: 5 | Sound Level: Not disclosed | Floor Area: 300 square feet

Quick Comparisons Of the Energy-Efficient Portable ACs

Energy-Efficient ACsCooling PowerSEER RatingSound LevelFloor Area
Airo Comfort Portable AC14,000 BTU1450 dB550 sq. ft.
Whynter ARC-122DS Portable AC12,000 BTU1352 dB400 sq. ft.
Midea Duo Smart HE Inverter Portable AC14,000 BTU12.352 dB550 sq. ft.
LG Smart Portable AC10,000 BTU7.8353 dB450 sq. ft.
Whynter ARC-14S Dual Hose Portable AC14,000 BTU7.6956 dB500 sq. ft.
Rosewill Portable AC12,000 BTU756 dB300 sq. ft.
DeLonghi Portable AC14,000 BTU5Not disclosed700 sq. ft.
COSTWAY Portable AC8,000 BTU556 dB230 sq. ft.
Ivation Portable AC13,000 BTU555 dB500 sq. ft.
Wamife Portable AC12,000 BTU550 dB400 sq. ft.
Windmill Air Conditioner8,300 BTU6.2Not disclosed350 sq. ft.
Dreo TwinCool Smart Inverter Portable AC12,000 BTU8.943 dB450 sq. ft.
Pasapair Portable AC8,000 BTU5Not disclosed300 sq. ft.

Buying Guide

Until now, I have been discussing the 13 best energy-efficient portable air conditioners that I shortlisted after extensive research and testing. Choosing the best portable air conditioners is challenging owing to the various factors one needs to consider. 

Furthermore, multiple companies like Frigidaire, LG, and Whynter have been manufacturing portable air conditioners, complicating the decision-making process.

That said, in this section, I will highlight the important things you need to keep in mind when shopping for the best portable air conditioner. Let’s check them out, then!

1. Power

By now, it must be clear that not all portable air conditioners have the same cooling capacity. In air conditioners, power is measured in BTU (British Thermal Unit). As a rule of thumb, the higher the BTUs, the more efficient and powerful portable air conditioners are. 

The size of your room will determine what BTU AC you will need– to measure your space first. For small spaces, portable air conditioners of low BTU will be the right choice but go for high BTU ACs in case of large rooms. 

2. Energy Ratings

In terms of energy ratings, SEER, CEER, and EER are 3 aspects you need to consider. 

SEER, or seasonal energy efficiency ratio, measures the efficiency of air conditioners, usually central air conditioning systems, over a season. Meanwhile, the combined energy efficiency ratio, or CEER, measures how efficient window air conditioners are. This standard is set by the United States Department of Energy. 

On the other hand, the energy efficiency ratio or EER assesses how efficiently a cooling system functions. 

For your reference, I have mentioned the SEER of all portable air conditioners mentioned above. When making a decision, just keep in mind that the higher the rating, the more energy it will save. 

3. Noise

There’s no denying that even the best portable air conditioners generate loud noise when operating. Therefore, finding the one that makes your space as quiet as a library is certainly challenging. 

While the majority of portable air conditioners produce about 56 dB of noise when running at the highest settings, some produce up to 50 dB. If you’re looking for the best portable air conditioner for your office space, look for units whose noise output is between 40 dB and 50 dB. That’s because they are fairly quiet, meaning they don’t make much noise when running. 

However, if noise output isn’t that much of a concern, go for whichever unit fits your needs and budget. 

4. Installation And Maintenance

Unless you’re an AC installer by profession, installation is another important factor that needs to be considered before choosing a portable AC unit. 

Almost all portable AC units are easy to install, mainly because they come pre-assembled. All you need to do is connect the hose to set it up for use. 

When ordering an AC from among the best portable air conditioners, make sure to check if it comes with a window kit and all other supplies needed to set it up. 

Besides installation, the portable air conditioner you choose shouldn’t be difficult to maintain. Go for options that come with a detachable and washable air filter for your convenience. 


Energy-efficient portable air conditioners are the best alternative to central air conditioning systems. Without jacking up utility bills, portable air conditioners keep users cool no matter how hot the weather is.

Among these 13 options, finding the best portable air conditioner is no easy feat, so if you’re still stuck in the decision-making process, here’s a quick rundown of my top choices.

Without a doubt, the Airo Comfort Portable Air Conditioner steals the show because of its high cooling capacity and SEER. That’s not all; its stylish modern design, 3-in-1 functionality, and easy portability have made it my favorite.

The Whynter ARC-122DS Portable Air Conditioner is a close second because it’s a dual hose system with a CFC-free, green refrigerant. Not to forget, it’s easy to install and can be set up in less than 30 minutes.