Looking for the best portable air conditioner in the UK? With rising temperatures, finding an efficient way to stay cool is more important than ever. But with so many models on the market, choosing the right one can feel overwhelming. No worries—we’ve done the hard work for you!

In this guide, we’ve tested and reviewed the top portable air conditioners to help you make the best choice. Whether you need powerful cooling, a budget-friendly option, or an all-in-one unit with dehumidifying and ventilation features, we’ve got you covered.

After hours of testing, the Avalla S-80 Portable 4-in-1 Air Conditioning Unit earned our Editor’s Pick for its impressive cooling power, energy efficiency, and user-friendly design.

Need something more affordable? The HOMCOM 8000 BTU 4-in-1 Portable Air Conditioner offers great value without compromising performance. And for small spaces, the BLU-09 9,000 BTU Portable Air Conditioner delivers fast and effective cooling.

Not sure which one suits your needs? Don’t worry—we’ve also highlighted a product to avoid so you can steer clear of disappointment.

Read on to find the perfect portable air conditioner for your home or office and beat the heat with ease!

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Buying a Portable Air Conditioner? Here’s What It Should Have

When shopping for the best portable air conditioner, certain features should be a given—ensuring you get a reliable, efficient, and user-friendly unit. Here’s what to expect:

Essential Features (Must-Haves)

• Cooling Capacity (BTU Rating): Higher BTU means better cooling for larger rooms. Ensure the unit suits your space size.
• Energy Efficiency: Look for an A-rated or higher energy-efficient model to reduce electricity costs.
• Dehumidification Function: Helps remove excess moisture, improving comfort and preventing mould growth.
• Ventilation & Exhaust System: Comes with a window kit for proper venting and heat expulsion.
• Adjustable Fan Speeds: At least two to three-speed settings for flexible airflow control.
• Self-Evaporating System: Reduces or eliminates the need to manually drain water from condensation.
• Noise Level: Ranges from 50-65 dB, similar to a conversation or standard fan. Lower noise levels are ideal for bedrooms and offices.

Design and Build Quality

A well-built portable air conditioner should be durable, easy to move, and designed for hassle-free use. Here’s what to check:

• Compact & Lightweight Design: Ideal for small spaces and easy storage when not in use.
• Omnidirectional Wheels: Ensures smooth movement between rooms without heavy lifting.
• Sturdy Build: Avoid cheap plastic casing—high-quality materials improve longevity.
• Simple Setup: A quick and secure window installation kit should be included.

Extra Features That Elevate Cooling Efficiency

Some additional features can enhance the overall experience, making operation more convenient:

• Sleep Mode: Lowers noise and adjusts temperature gradually for nighttime comfort.
• Remote Control & Digital Display: For effortless operation and precise temperature control.
• 24-Hour Timer: Allows scheduled cooling to optimise energy usage.
• Smart Home Integration: Some models connect to Wi-Fi or voice assistants for remote control.
• Swing Mode (Oscillation): Distributes airflow evenly across the room for better cooling.
• Multi-Functionality (4-in-1): Includes cooling, dehumidifying, fan, and sometimes heating for year-round use.

By considering these factors, you’ll ensure you choose a portable air conditioner that is efficient, durable and meets your cooling needs without unnecessary compromises.

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Editors Pick

Avalla S-80 Portable 4-in-1 Air Conditioning Unit

The Avalla S-80 is a versatile air conditioning unit designed to cool, dehumidify, and improve indoor comfort. With its compact build, energy-efficient operation, and easy-to-use features, it provides a practical climate control solution for homes and offices.

Key Features

• Powerful Cooling: 5000 BTU output effectively cools medium-sized rooms up to 34m³. Auto-sensing technology adjusts cooling levels for efficiency.
• Dehumidifier & Clothes Drying: Removes up to 12L of moisture per day, helping to reduce dampness and mould. Ideal for drying delicate clothes without a tumble dryer.
• User-Friendly Design: Digital controls, a 24-hour timer, and sleep mode enhance convenience. Smooth-rolling casters make it easy to move between rooms.
• Window Kit Compatibility: Comes with a sash window kit for venting. Additional adapters may be needed for other window types.
• Energy Efficiency & Noise Levels: Uses R-290 refrigerant, which is eco-friendly and efficient. Operates at 50-65dB, comparable to similar models.

The Avalla S-80 impressed us with its powerful cooling and efficient dehumidification, making it a fantastic all-season solution. It quickly brought down room temperatures, which was a game-changer during hot days.

The built-in dehumidifier was equally effective, reducing excess moisture and even helping to dry clothes—a great alternative to tumble drying. The unit is easy to use, with a sleek digital interface, 24-hour timer, and smooth-rolling casters for effortless mobility.

It also runs on eco-friendly R-290 refrigerant, making it more sustainable. On the downside, it does produce some noise (which is expected from a unit this powerful), and a swing mode for better airflow direction would have been a welcome addition.

That said, the Avalla S-80 delivers where it matters most—it’s powerful, efficient, and practical. If you need a dependable way to stay comfortable year-round, this unit is a solid investment.

Runner Up

BLU-09 9,000 BTU Portable 3-1 Air Conditioner

The BLU-09 portable air conditioner is a practical solution for cooling small spaces. It offers three functions: cooling, fan, and dehumidifying. Designed for rooms up to 20 square meters, it delivers noticeable temperature drops within minutes.

Key Features

• Cooling Efficiency: Quickly reduces room temperature. Works best in small to medium-sized rooms.
• User-Friendly Setup: Includes a 1.5m expandable exhaust hose and a window sheet designed for UK casement windows. The setup is simple, with clear instructions.
• Self-Evaporating Function: Minimises water buildup by reusing condensation to improve efficiency. No need for constant drainage.
• Mobility & Design: Compact and equipped with omnidirectional wheels for easy movement. Sturdy and well-built.
• Noise Level: Operates at 49-53 dB(A). Not silent but comparable to a powerful fan.

We found the BLU-09 air conditioner to be an excellent choice for cooling small spaces. It quickly reduces room temperature, operates efficiently, and comes with a user-friendly setup (the included window kit is a great addition).

The remote control and LED display make it easy to adjust settings, while the self-evaporating function helps minimise water buildup.

There are a few minor drawbacks. The noise level is noticeable (similar to a strong fan), and the power cord could be longer for better placement options. Some users may also need an exhaust hose extender depending on their window type.

Despite these small issues, the BLU-09 is a fantastic solution for keeping cool in hot weather. It’s energy-efficient, easy to use, and highly effective within its intended room size. A smart investment for beating the heat.

Budget Pick

HOMCOM 8000 BTU 4-In-1 Portable Air Conditioner Unit

The HOMCOM 8000 BTU Portable Air Conditioner is a versatile cooling unit designed for small to medium-sized rooms. With its 4-in-1 functionality, remote operation, and compact design, it provides an efficient way to stay cool and comfortable.

Key Features

• 4-in-1 Functionality: Cools, dehumidifies, ventilates, and includes a sleep mode for comfort.
• Efficient Cooling: Quickly cools rooms up to 15 square meters.
• Remote & LED Controls: Easy-to-use LED display with a remote; ‘sleep’ mode is remote-only.
• Auto Shut-Off & Timer: Stops automatically when the tank is full; 24-hour timer for scheduled use.
• Compact & Portable: Lightweight with wheels for easy movement.
• Installation Kit: Hose and window kit included for standard setups.

The HOMCOM 8000 BTU 4-in-1 Portable Air Conditioner impressed us with its efficient cooling and versatility. It quickly lowered the temperature in our test room, making hot days far more comfortable.

The 4-in-1 functionality (cooling, dehumidifying, ventilating, and sleep mode) adds great value, especially for humid environments. The LED display and remote control make it easy to operate, while the auto shut-off and 24-hour timer add convenience.

There are a few minor drawbacks—it does produce some noise (expected for a portable unit), and the window kit is best suited for sash windows, meaning modifications may be needed for other types. The hose connection takes some effort, but once secured, it works seamlessly.

Overall, this compact and portable unit is a fantastic choice for anyone needing reliable cooling with extra features. With its strong performance and user-friendly design, we think it’s a great investment for staying cool and comfortable.

Best Smart Portable Air Conditioner Pick

Ometa Air Portable Air Conditioners Home Cooling & Ventilation 4-in-1

The Ometa Air Portable Air Conditioner is a versatile cooling and heating unit designed for year-round climate control. With multiple BTU options (7000, 9000, 12000, and 14000), it suits a variety of room sizes.

Its smart functionality, multiple operating modes, and portable design make it a practical choice for home use.

Key Features

• Cooling & Heating: Effectively cools in summer and provides heating for winter use.
• Multiple Modes: Includes cooling, heating, ventilation, drying, and sleep modes for customised comfort.
• Smart Control: Compatible with Alexa and Google Assistant, with app and remote control options.
• Portable Design: Caster wheels allow easy movement between rooms.
• Window Compatibility: Includes two window exhaust fittings to accommodate different window types.
• User-Friendly Interface: Digital display and remote operation for simple adjustments.
• Energy Efficiency: Designed for effective temperature control while maintaining energy efficiency.

We recently tested the Ometa Air 4-in-1 Portable Air Conditioner, and it proved to be a reliable option for managing indoor temperatures. Setting it up was straightforward, and the included window fittings made installation hassle-free.

The cooling performance was impressive, maintaining a comfortable temperature even in larger spaces. The heating mode worked well during colder months, making this unit useful year-round.

The app integration and voice control added convenience, allowing adjustments without needing to be near the unit. While the noise level was noticeable, especially at higher speeds, it was expected for a unit of this power.

Placement near a window is necessary due to the hose length, and using the heating function requires regular drainage.

Overall, the Ometa Air Portable Air Conditioner delivers strong performance with smart features and flexibility. For those needing a multi-purpose air conditioning unit, it’s a solid choice.

Energy Efficient Pick

Shinco 9000BTU 4-in-1 Portable Air Conditioner

The Shinco 9000BTU 4-in-1 Portable Air Conditioner is a solid cooling solution for small to medium-sized rooms. It effectively cools spaces up to 237 sq. ft., making it ideal for bedrooms, offices, and apartments.

Key Features

• Powerful Cooling: Quickly lowers room temperature, even in humid conditions. The dehumidifier function helps reduce stickiness and improves comfort.
• Multiple Functions: Works as an air conditioner, fan, and dehumidifier, providing year-round use.
• User-Friendly Controls: The LED display and remote control make adjustments easy. The timer function allows scheduling, perfect for cooling before bedtime.
• Portable & Easy to Install: Four caster wheels and side handles make it easy to move. The included window kit is simple to set up.
• Sleep Mode: Gradually adjust the temperature to prevent sudden chills. The unit runs quieter at lower speeds.
• Energy Efficient & Eco-Friendly: Uses R290 refrigerant, which hasa low environmental impact.

The Shinco 9000BTU 4-in-1 Portable Air Conditioner is a powerful, efficient, and compact cooling solution for small to medium-sized spaces. It cools quickly, maintains a steady temperature, and doubles as an effective dehumidifier—perfect for humid climates.

The setup is simple and hassle-free, with all necessary accessories included. Its portable design (with caster wheels and side handles) makes it easy to move between rooms. The timer function and sleep mode enhance convenience, allowing for comfortable cooling at night.

There are a few minor drawbacks. The noise level is noticeable at high speed (though much quieter at low), and the short power cord and exhaust hose may require extensions in some setups.

Overall, this unit delivers impressive performance for its size, making it a great choice for summer comfort and year-round humidity control. It’s a reliable, space-saving solution for keeping rooms cool and comfortable.

One To Avoid

Aptorlty Mobile Air Conditioners, 4 in 1 Tower Fan/Air Purifier

The Aptorlty 4-in-1 Portable Air Conditioner promises a lot but delivers very little. It claims to function as a fan, humidifier, air purifier, and evaporative cooler, but after testing, it falls short in nearly every category.

The biggest issue is cooling performance—or rather, the lack of it. Even with frozen ice packs and cold water, the temperature in the room barely changes. It works like a basic fan, but calling it an “air conditioner” is misleading.

Adding to the frustration, the swing radius is limited, making it difficult to direct airflow effectively. The noise levels are another major drawback. While not unbearable, it gets noticeably loud at higher speeds, making it a poor choice for quiet spaces or nighttime use.

The build quality also raises concerns. The plastic construction feels flimsy, and over time, we noticed the top fan developing a rattling noise. Draining the water tank is unnecessarily complicated, requiring effort to avoid spills.

While the LED screen and remote control offer some convenience, they don’t make up for the product’s poor cooling ability. Simply put, this is an overpriced fan that doesn’t justify its cost. If you need real cooling, this is one to avoid.

How We Tested and Chose the Best Portable Air Conditioners

Finding the best portable air conditioner requires more than just switching on a unit and feeling the breeze. We carefully examined each model based on cooling performance, energy efficiency, ease of use, noise levels, and overall value. Here’s how we did it.

Cooling Performance

To assess how well each unit cooled a space, we measured the starting room temperature before switching the air conditioner on. We tested each model in a room size suited to its BTU rating, running it for 30 to 60 minutes while tracking temperature drops at multiple points.

The best units cooled the space quickly and maintained an even temperature without hot spots. We also compared how long it took each air conditioner to lower the temperature by 5–10°C, ensuring consistency in cooling power.

Energy Efficiency

Cooling effectiveness is important, but not at the expense of high electricity bills. Using a power meter, we recorded how much energy each unit consumed per hour, factoring in its cooling capacity.

We also tested eco-modes and energy-saving features to see if they made a noticeable difference in consumption without sacrificing cooling performance. Models that adjusted automatically to room conditions stood out for efficiency.

Noise Levels

A portable air conditioner should keep you cool without being disruptive. We measured noise output at both one and three meters away in different settings, including standard cooling mode and sleep mode.

For context, anything below 50 dB is considered quiet, 50–65 dB is typical, and above 65 dB starts to feel intrusive. We also checked for unexpected rattling, vibrations, or sudden loud cycling that could be distracting over time.

Ease of Use and Installation

Setting up a portable air conditioner shouldn’t be a struggle. We unpacked and installed each unit, noting whether the included window kit fits standard UK windows without modifications. The controls were tested for ease of use, ensuring the digital display, buttons, and remote were intuitive.

Mobility was another factor—we checked how smoothly the wheels moved and whether repositioning the unit required effort. For models with water tanks, we assessed how easy they were to drain and clean.

Dehumidification Performance

Since many portable air conditioners also function as dehumidifiers, we tested their ability to reduce humidity in damp conditions. Before turning each unit on, we recorded the room’s humidity levels and then measured them again after an hour of operation.

The best models noticeably improved air quality and collected a significant amount of moisture, making them useful beyond just cooling.

Extra Features and Smart Functions

Some models offer added convenience through smart features, so we tested their practicality. Remote controls were evaluated for full functionality rather than just basic power and fan adjustments.

Units with Wi-Fi or smart home compatibility were set up with apps or voice assistants to see how seamlessly they integrated. We also looked at timers, sleep modes, and oscillation settings, checking if they improved user experience or felt like unnecessary add-ons.

Overall Value for Money

Once all tests were completed, we compared each air conditioner based on performance, efficiency, usability, and additional features. We considered whether the price justified the unit’s capabilities, ensuring that budget-friendly options still delivered reliable cooling.

A higher price tag needed to be backed by standout features and long-term durability.

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Frequently Asked Questions

Is It Worth Getting a Portable Air Conditioner in the UK?

Yes, it is worth getting a modern portable air conditioner in the UK, especially during increasingly warm summers. While the UK climate is generally mild, heatwaves can make indoor spaces uncomfortable.

A portable air conditioner provides targeted cooling warm air, making it a practical solution for homes without built-in air conditioning.

Is It OK to Run a Portable AC All Night?

Yes, it is OK to run a portable air conditioning unit all night, but it depends on the model’s noise level and energy efficiency. Many units have sleep modes that reduce fan speed and noise for overnight comfort. However, running it continuously may increase electricity costs and require regular maintenance.

Do Portable ACs Waste a Lot of Electricity?

Portable air conditioners do consume electricity, but whether they waste it depends on efficiency ratings and usage. Models with energy-saving features, such as eco mode and programmable timers, help reduce power consumption.

Choosing the right BTU rating for the room size prevents excessive energy use while ensuring effective cooling.

Will a Portable AC Cool a Bedroom?

Yes, a portable air conditioner cools a bedroom effectively if it is properly sized for the space. Choosing a unit with the right BTU rating ensures sufficient cooling without overworking the system.

Features like sleep mode and adjustable airflow improve comfort while maintaining energy efficiency in a bedroom setting.

Where Is the Best Place to Put a Portable Air Conditioner?

The best place to put a portable air conditioner is near a window for proper venting and in an area with unobstructed airflow. Positioning it centrally in the room helps distribute cool air evenly. Avoid placing it near heat sources or in direct sunlight to maintain optimal performance and efficiency.

Can a Portable AC Overheat?

Yes, a portable air conditioner can overheat if airflow is blocked, filters are dirty, or ventilation is inadequate. Overheating can also occur if the unit runs continuously without proper maintenance.

Regularly cleaning filters, ensuring proper venting, and allowing cool-down periods can prevent overheating and prolong the unit’s lifespan.

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Final Word

Hopefully, our Best Portable Air Conditioner guide has helped you find the right model. With so many great options, choosing one isn’t easy—but for us, the Avalla S-80 Portable 4-in-1 Unit is the top pick.

It delivers powerful cooling, efficient dehumidification, and easy operation, making it a reliable all-season solution. That said, whether you need a budget portable air conditioner option like the HOMCOM 8000 BTU or a compact, high-performance unit like the BLU-09 9,000 BTU, there’s something for everyone.

However, one model to avoid is the Aptorlty 4-in-1 Portable Air Conditioner—it barely cools, feels cheaply made, and isn’t worth the price.

What do you think of our recommendations? Are you ready to stay cool, or do you need more time to decide? Let us know in the comments below!