8 Best Portable Air Conditioner under $300 in 2026

Contents
  1. The Top 8
  2. Top 8 Portable Air Conditioner Reviewed in Detail
  3. 1. Editor’s Choice
  4. 2. Best Design
  5. 3. Best Compact
  6. 4. Best Budget
  7. 5. Runner-Up
  8. 6. Best Heavy-Duty
  9. 7. Best for Small Spaces
  10. 8. Best for Beginners
  11. Portable Air Conditioner Compared Side by Side
  12. How to Choose Portable Air Conditioner
  13. How We Reviewed
  14. Frequently asked questions
  15. What to look for

Finding the best portable air conditioner under 300 can be tough. The BLACK+DECKER Portable Air Conditioner, 10,000 BTU, is our top pick due to its 10,000 BTU cooling power. This model effectively cools rooms up to 450 sq. ft. The Midea 8,500 BTU model saves you money but only cools spaces up to 150 sq. ft. Buyers often must choose between cooling power and coverage size. This article highlights options to help you decide.

Paid links. We earn a commission from qualifying purchases at no extra cost to you. Prices are pulled live from Amazon and change often. How this works

The Top 8

1
Midea 8,500 BTU ASHRAE Portable Air Conditioner, Cools up to 150 Sq. Ft.
Midea 8,500 BTU ASHRAE Portable Air Conditioner, Cools up to 150 Sq. Ft.
Amazon.com
2
Garvee 14000 BTU Portable AC with Black Top Cover, Cooling, Dehumidifying & Fan Functions, Perfect for Rooms Up to 750 Sq Ft, Quiet Mode, Energy-Saving Timer, Easy Setup & Year-Round Comfort
Garvee 14000 BTU Portable AC with Black Top Cover, Cooling, Dehumidifying & Fan Functions, Perfect for Rooms Up to 750 Sq Ft, Quiet Mode, Energy-Saving…
Amazon.com
3
SereneLife Portable Air Conditioner, Dehumidifier & Fan | Dual Motor 3-in-1 8,000 BTU AC with 64°F–90°F Temperature Range, Cools Up to 350 Sq Ft, 3 Fan Speeds, Remote Control & Window Kit, White
SereneLife Portable Air Conditioner, Dehumidifier & Fan | Dual Motor 3-in-1 8,000 BTU AC with 64°F–90°F Temperature Range, Cools Up to 350 Sq Ft, 3 Fan…
Amazon.com
4
BLACK+DECKER Portable Air Conditioner, 10,000 BTU, BPACT10WT, White
BLACK+DECKER Portable Air Conditioner, 10,000 BTU, BPACT10WT, White
Amazon.com
5
Garvee 3-in-1 Portable Air Conditioner, 14000 BTU (9300 BTU SACC) AC Unit
Garvee 3-in-1 Portable Air Conditioner, 14000 BTU (9300 BTU SACC) AC Unit
Amazon.com
6
Garvee 3-in-1 Portable Air Conditioner, 14000 BTU (10200 BTU SACC) AC Unit
Garvee 3-in-1 Portable Air Conditioner, 14000 BTU (10200 BTU SACC) AC Unit
Amazon.com
7
BLACK+DECKER Portable Air Conditioner, 8,500 BTU, BPACT05SM, White
BLACK+DECKER Portable Air Conditioner, 8,500 BTU, BPACT05SM, White
Amazon.com
8
AGTANA 14000 BTU Portable Air Conditioner for Large Room up to 700 Sq. Ft, 3-in-1 Self-Evaporating AC with Fan & Dehumidifier, Floor Standing Portable AC Unit with Remote Control, Auto Swing, White
AGTANA 14000 BTU Portable Air Conditioner for Large Room up to 700 Sq. Ft, 3-in-1 Self-Evaporating AC with Fan & Dehumidifier, Floor Standing Portable AC…
Amazon.com

These are the strongest picks that come in under $300, cheapest first.

Top 8 Portable Air Conditioner Reviewed in Detail

Here are some of the best options available for portable air conditioners under $300.

1. Editor’s Choice

Midea 8,500 BTU ASHRAE Portable Air Conditioner, Cools up to 150 Sq. Ft.

$199.99 $279.99
in stock
Limited time deal
Amazon.com
  • SMARTCOOL – Midea 8,500 BTU ASHRAE (5,000 BTU SACC) Portable Air Conditioner delivers fast, effective cooling for spaces Up to 150 sq. ft. while providing fan and dehumidification functions in any home, creating a relaxing and comfortable environment
  • SMART CONTROL – Control your portable AC from anywhere using the SmartHome app for iOS and Android. Switch modes, set a schedule, and more. Pair your AC unit with Alexa or Google Assistant devices for voice control options
  • EFFORTLESS OPERATION – Enjoy the simplicity and comfort of digital controls. The portable AC features an easy-to-read LED display and includes a compact remote control (batteries included) to easily set the time, temperature, and mode, from across the room. Its 24-hour adjustable timer can cool a room to a temperature between 62°F-90°F and has 3 modes to choose from – cooling, dehumidification, fan only.
  • EASY INSTALLATION: Roll your air conditioner to the preferred cooling area, attach the 5ft hose and adjustable window brackets (fits openings from 26.5-48“), turn the unit on and let your cooling begin. An exhaust hose and window kit are included, no extra tools are needed for assembly. Installation instructions are simple and can be done by anyone.
  • WASHABLE AIR FILTER – To provide clean cool air, we designed a removable and reusable air filter to protect your family and living space from dust and pet hairs. We recommend you clean the filter every week of operation in order to extend the life and performance of this unit.
Updated: 8 hours ago

The BLACK+DECKER Portable Air Conditioner, 10,000 BTU, is a three-in-one unit that cools, dehumidifies, and fans. Its powerful 10,000 BTU capacity easily cools spaces up to 450 sq. ft. This makes it perfect for living rooms or bedrooms. Compared to other models, it offers more cooling power for larger spaces. Other options like the Midea 8,500 BTU focus on smaller areas, which limits their appeal. The only downside is its size; it may be bulky for some users.

Pros

  • Cools up to 450 sq. ft.
  • 10,000 BTU cooling capacity
  • Three-in-one: AC, dehumidifier, and fan
  • Remote control for convenience

Cons

  • Bulky design may not fit tight spaces
  • No smart home connectivity
  • Limited color options

Best for: Larger rooms needing effective cooling. Not ideal for: Smaller spaces or very tight areas.

A reliable choice for cooling larger rooms efficiently.

2. Best Design

Garvee 14000 BTU Portable AC with Black Top Cover, Cooling, Dehumidifying & Fan Functions, Perfect for Rooms Up to 750 Sq Ft, Quiet Mode, Energy-Saving…

$256.99
in stock
Amazon.com
  • 【Efficient 3-in-1 Function】This portable AC unit serves as a cooling, dehumidifying, and fan device, offering year-round comfort. With 14,000 BTU cooling power, it efficiently cools spaces up to 750 sq. ft. While the dehumidifier removes 90 pints per day, the fan helps circulate air in your room. Perfect for a wide range of climates.
  • 【Quiet Operation for Undisturbed Sleep】Experience a peaceful environment with noise levels as low as 50 dB on low fan speed and 52 dB on high. Featuring a special sleep mode that minimizes noise during rest, this air conditioner ensures comfort without disturbing your sleep or focus.
  • 【Portable and Easy to Move】Equipped with 360° swivel casters, this portable air conditioner offers effortless mobility. Move it easily from room to room as needed, whether in the bedroom, living room, or home office, ensuring convenience wherever cooling is required.
  • 【Versatile Cooling Range】Covering a broad temperature range of 61°F to 88°F, this air conditioner provides customizable comfort. Whether you’re looking to cool down on a hot day or just need a mild breeze, it adapts to your needs with adjustable fan speeds for optimal performance.
  • 【Quick Installation and Low Maintenance】The included universal window kit fits most window types, making installation quick and easy. Additionally, the washable filter helps maintain clean air with minimal upkeep, making it an ideal low-maintenance solution for those on the go.
  • 【Energy-Saving Timer】This portable AC features a 24-hour timer, giving you full control over when it operates. Set it to turn on or off according to your schedule, maximizing energy efficiency and minimizing costs without sacrificing comfort.
Updated: 8 hours ago

The Midea 8,500 BTU ASHRAE Portable Air Conditioner is designed for smaller spaces. With a cooling capacity for rooms up to 150 sq. ft., it provides effective cooling for bedrooms or small offices. Its smart control feature allows you to manage it from anywhere using your smartphone. While it lacks the raw cooling power of larger units, it excels in energy efficiency and quiet operation. However, its limited coverage area makes it unsuitable for larger rooms.

Pros

  • Cools up to 150 sq. ft.
  • Smart control via smartphone app
  • Quiet operation
  • Compact and lightweight design

Cons

  • Not suitable for larger rooms
  • Lower BTU rating than others
  • Fewer features compared to higher-rated models

Best for: Small bedrooms or offices. Not ideal for: Larger living areas or open spaces.

A stylish option for compact spaces with smart features.

3. Best Compact

SereneLife Portable Air Conditioner, Dehumidifier & Fan | Dual Motor 3-in-1 8,000 BTU AC with 64°F–90°F Temperature Range, Cools Up to 350 Sq Ft, 3 Fan…

$269.90
in stock
Amazon.com
  • HANDY AND PORTABLE: The SereneLife Portable Air Conditioner System features a lightweight, handy, sleek body design intended to be used in the bedroom, living room or garage at home or office. It features rolling wheels for easy portability
  • 3 OPERATING MODES: The compact floor AC indoor cooler conditioning unit features a simple electric plug in operation and introduces 3 modes – cooling, dehumidifier and fan. The default mode is cooling, it is automatically activated after power ON
  • BUILT-IN DEHUMIDIFIER: You don’t only get the cooling effect of the portable AC but also helps reduce humidity levels, acts as purifier which makes your home less hospitable to allergens such as dust mites, mold, mildew by selecting dehumidifier mode
  • REMOTE CONTROL: Features a digital touch button control panel which includes the power, mode, timer, temperature and fan speed settings. Other functions such as unit selector (°C/°F), sleep key can be adjusted using the included remote control
  • 8000 BTU COOLING POWER: With 900W rated power and 8000 BTU cooling power, the cold air can cover a room of up to 215+ sq ft! Air flow is rated at 290 m3/hr, moisture removal/dehumidifier at 1.2 liters/hr w/ an operating noise level of only 55-57 dBa
Updated: 8 hours ago

The BLACK+DECKER Smart Portable Air Conditioner, 14,000 BTU, offers a significant boost in cooling power. This model can cool rooms up to 500 sq. ft., making it suitable for larger areas. It also includes a fan and dehumidifier, adding to its versatility. Compared to the 10,000 BTU model, it offers better performance for larger spaces. One limitation is its weight, as it can be challenging to move around for some users.

Pros

  • Cools up to 500 sq. ft.
  • 14,000 BTU cooling capacity
  • Smart connectivity for remote control
  • Dehumidifier and fan functions

Cons

  • Heavier than other models
  • Higher energy consumption
  • Premium features may be unnecessary for basic needs

Best for: Large rooms requiring powerful cooling. Not ideal for: Users needing a lightweight model.

Powerful cooling for larger spaces with smart features.

4. Best Budget

BLACK+DECKER Portable Air Conditioner, 10,000 BTU, BPACT10WT, White

$299.99
in stock
Amazon.com
  • Three-in-One Unit: Our 10,000 BTU (5,550 DOE) air conditioner also functions as a dehumidifier & fan. This portable air conditioner has a full function remote control & top mounted control panel with LED display
  • Portable AC: Use this personal air conditioner (15.3” x 14” x 24.8″) in rooms up to 450 sq. ft. Stay cool in the hot summer months and sleep well with this BLACK+DECKER ac unit for bedroom
  • Follow Me Remote: Our portable AC unit comes with a full function remote control that features a FOLLOW ME function, which allows the remote to act as a thermostat for precise temperature control
  • Easy Mobility: Thanks to casters on the bottom and side handles on both sides of the small air conditioner, this air cooler can be moved from room to room without any hassle
  • Installation Kit: When it comes to fans that blow cold air, this indoor ac unit includes an easy-to-install window kit. A large, vented airflow outlet ushers in cool air
Updated: 8 hours ago

The Garvee 3-in-1 Portable Air Conditioner, 14,000 BTU, is designed for effective cooling in rooms up to 750 sq. ft. It offers rapid cooling and includes fan and dehumidifier functions. This model stands out for its ability to handle larger spaces compared to others in this price range. However, its bulkiness can be a drawback for users with limited space.

Pros

  • Cools up to 750 sq. ft.
  • Rapid cooling capabilities
  • Includes fan and dehumidifier functions
  • Versatile for different room sizes

Cons

  • Bulky design may limit placement options
  • Higher energy consumption than smaller units
  • Limited smart features

Best for: Large rooms needing quick cooling. Not ideal for: Tight spaces or minimalistic designs.

A great choice for fast cooling in larger areas.

5. Runner-Up

Garvee 3-in-1 Portable Air Conditioner, 14000 BTU (9300 BTU SACC) AC Unit

$329.99
in stock
Amazon.com
  • Fast, Effective Cooling for Rooms Up to 750 Sq. Ft: This 14,000 BTU portable air conditioner provides rapid spot cooling for spaces like bedrooms, home offices, or apartments up to 750 sq. ft. It helps quickly dissipate indoor heat, keeping you comfortable even on the hottest summer days.
  • 3-in-1 Versatility: AC, Fan & Dehumidifier: More than just a cooler, this unit also functions as a dehumidifier and a circulating fan. It reduces excess indoor humidity and improves air circulation, delivering year-round comfort across different seasons and weather conditions.
  • User-Friendly Controls & Eco-Conscious Design: The clear LED control panel makes operation easy, with a programmable 24-hour timer and Sleep Mode for convenient, quiet nighttime use. Designed with eco-friendly refrigerant, this energy-efficient AC helps cool your space while minimizing energy consumption.
  • Easy to Move with Rolling Casters & Side Handles: Compact and sleek, this unit features smooth-rolling wheels and ergonomic side handles, so you can effortlessly move it from room to room — wherever cooling is needed most.
  • Quick No-Drill Window Installation: The package includes a remote control and a complete window installation kit with an adjustable exhaust hose and window panels. Fits most double-hung or sliding windows, requires no drilling, and can be set up in minutes — ideal for renters or temporary cooling needs.
Updated: 8 hours ago

The AGTANA 14000 BTU Portable Air Conditioner is built for larger rooms up to 700 sq. ft. It features a wide-angle auto-swing for even air distribution. This one excels in flexibility, offering cooling, dehumidification, and fan modes. Its capacity makes it suitable for a variety of settings, but it is heavier than many compact models, which may hinder mobility.

Pros

  • Cools up to 700 sq. ft.
  • Wide-angle auto-swing function
  • 3-in-1: cooling, fan, dehumidifier
  • Strong cooling capacity

Cons

  • Heavy design can be hard to move
  • Higher energy costs
  • Limited features compared to smart models

Best for: Larger spaces needing effective cooling. Not ideal for: Users looking for lightweight options.

Effective cooling for larger rooms but on the heavier side.

6. Best Heavy-Duty

Garvee 3-in-1 Portable Air Conditioner, 14000 BTU (10200 BTU SACC) AC Unit

$329.99
in stock
Amazon.com
  • 14,000 BTU Cooling for Rooms Up to 750 Sq. Ft: This portable air conditioner (ASHRAE rated 14,000 BTU) delivers effective cooling for bedrooms, living rooms, or home offices up to 750 sq. ft. It uses eco-friendly R32 refrigerant to help maintain a comfortable space while keeping energy consumption lower — ideal for daily use during hot weather.
  • 3-in-1 Modes, AC, Dehumidifier & Fan: Beyond cooling, this unit also works as a dehumidifier (removes up to 100.32 pints of moisture per day) and a 2-speed fan. With auto-swing louvers and 2 fan speeds, it helps distribute airflow evenly and provides year-round comfort. Temperature range: 64–90°F.
  • Smart Features for Convenient Control: The LED control panel and full-function remote make operation simple. Use the 24-hour timer to match your schedule, the Sleep Mode for quieter nighttime operation with gradual temperature adjustment, and the Follow Me function — the remote senses the temperature near you and the AC adjusts cooling accordingly.
  • Easy to Move & Quick No-Tools Setup: Built with 360° rolling casters and side handles, this unit can be effortlessly moved between rooms. The included window installation kit (adjustable panels, extendable exhaust hose) requires no drilling — fits most sliding or double-hung windows. Set up in minutes and start cooling. Perfect for renters or anyone who needs a flexible cooling solution.
  • Quiet Operation & Energy Efficiency: Designed with a CEER rating of 7.83, this AC helps reduce electricity costs while operating quietly at 50 dB (low) and 52 dB (high). Its sleek white finish and compact profile fit well in any room, and the quiet operation supports restful sleep or focused work.
Updated: 8 hours ago

The GrowthWing 14,000 BTU Smart WiFi Portable Air Conditioner is designed for large spaces up to 700 sq. ft. It features smart controls, allowing remote access via smartphone. This unit combines rapid cooling with a quiet operation. Compared to others, it provides a good balance of performance and convenience. A drawback is its reliance on WiFi, which may not appeal to everyone.

Pros

  • Cools up to 700 sq. ft.
  • Smart WiFi connectivity
  • Quiet operation
  • Rapid cooling with eco-friendly refrigerant

Cons

  • Requires WiFi for full features
  • Heavier than smaller units
  • Higher energy usage compared to compact models

Best for: Users wanting smart features and large coverage. Not ideal for: Those without reliable WiFi.

Good choice for tech-savvy users needing efficient cooling.

7. Best for Small Spaces

BLACK+DECKER Portable Air Conditioner, 8,500 BTU, BPACT05SM, White

$334.99
in stock
Amazon.com
  • Three-in-One AC Unit: Our 8,500 BTU (5,100 BTU SACC) portable air conditioner combines an air conditioner, dehumidifier and fan for all your cooling & ventilation needs in rooms up to 350 sq. ft.
  • For Small Rooms & Living Spaces: Our room air conditioners provide fast, effective cooling for up to 350 sq. ft., making it ideal for dorms, apartments, cabins, offices, bedrooms, or living rooms
  • User-Friendly Controls: Featuring a top-mounted control panel with LED display, this ac unit for bedroom allows you to easily manage your indoor air conditioner settings for personalized comfort
  • Full Function Remote Control: Our portable AC unit comes with a convenient remote control that allows you to control all the features without having to get up and use the control panel
  • Eco-Friendly: Utilizing R-32 refrigerant, this air conditioner portable unit is environmentally friendly and improves energy efficiency making it one of the best portable room ac units available
Updated: 8 hours ago

The BLACK+DECKER Portable Air Conditioner, 8,500 BTU, is suitable for small spaces up to 350 sq. ft. It combines cooling, dehumidifying, and fan functions in a compact design. This model is perfect for those needing a reliable unit without taking up too much room. However, it is less powerful than larger models, limiting its effectiveness in bigger areas.

Pros

  • Cools up to 350 sq. ft.
  • Compact design with three functions
  • Easily portable with wheels
  • Affordable option for small spaces

Cons

  • Limited cooling power for larger rooms
  • Lower BTU rating than competing models
  • Noise level may be higher in small spaces

Best for: Small bedrooms or offices. Not ideal for: Larger living areas or open floor plans.

An affordable option for compact spaces with decent cooling.

8. Best for Beginners

AGTANA 14000 BTU Portable Air Conditioner for Large Room up to 700 Sq. Ft, 3-in-1 Self-Evaporating AC with Fan & Dehumidifier, Floor Standing Portable AC…

$339.78 $459.99
in stock
Limited time deal
Amazon.com
  • 【14000 BTU Power & Wide-Angle Auto-Swing】 Engineered with a dual-rated 14,000 BTU (ASHRAE) / 10,000 BTU (SACC) capacity, this portable air conditioner is built to master any large room up to 700 sq. ft. Unlike standard units, our upgraded 3-speed fan features a 25-89° wide-angle auto-swing. This ensures frigid air is distributed fast and evenly across your living room, garage, or open-concept home, avoiding direct blowing while delivering an “instant chill” effect.
  • 【Hassle-Free Drainage-Free Technology】 Experience true drainage-free cooling with our advanced Self-Evaporating System. This portable ac unit recycles collected moisture to cool the internal coils and exhausts it out through the hose—meaning no more daily water dumping for typical room use. For high-humidity environments like a basement or laundry room, we’ve included a continuous drainage port and a safety auto-stop sensor to ensure leak-proof, maintenance-free operation.
  • 【48dB Ultra-Quiet Sleep Mode & 24H Timer】 Designed specifically for the bedroom, this portable ac operates at a whisper-quiet 48dB in Sleep Mode. It helps create a peaceful, distraction-free environment for your home office or nursery. Combined with the 24H programmable timer, you can preset this free standing AC to start before you arrive or shut off after you fall asleep, maximizing energy-saving efficiency without sacrificing comfort.
  • 【Versatile 3-in-1 Comfort & 96 Pints Dehumidifier】 This multifunctional portable air conditioner serves as a high-capacity AC, a 3-speed fan, and a powerful dehumidifier. Capable of removing up to 96 Pints of moisture per day, it effectively eliminates “sticky” air and odors in any room. Whether it’s a sweltering summer day or a humid rainy season, our system keeps your indoor air fresh, dry, and healthy for the whole family.
  • 【Smart Control & 10-Minute Rapid Install】 This free standing cooling machine features an easy-to-read Front LED Display and a backlit remote with a 28ft long-range sensor (2 AAA batteries not included). Installation is a breeze—the included window kit fits most horizontal and vertical windows in under 10 minutes. Equipped with 360° heavy-duty wheels and hidden handles, you can effortlessly move this portable ac unit between your bedroom, kitchen, and living room.
Updated: 8 hours ago

The SereneLife Portable Air Conditioner features a dual motor system for efficient cooling. With an 8,000 BTU rating, it cools spaces up to 350 sq. ft. This model is lightweight and easy to move, making it perfect for temporary setups. However, its cooling power is lower compared to more sturdy units, limiting its effectiveness in larger areas.

Pros

  • Cools up to 350 sq. ft.
  • Lightweight and portable design
  • Three operating modes: AC, dehumidifier, and fan
  • Easy to set up and use

Cons

  • Lower BTU rating for larger areas
  • May struggle in very hot conditions
  • Fewer features compared to pricier models

Best for: Temporary cooling solutions. Not ideal for: Consistent use in larger spaces.

A budget-friendly choice for easy setup and portability.

Portable Air Conditioner Compared Side by Side

The table below compares the best portable air conditioner under 300 options. It shows cooling capacity, space coverage, and features. Use it to find the best fit for your home.

# Product Best for Brand Price Link
1 BLACK+DECKER Portable Air Conditioner Editor's Choice BLACK+DECKER $299.99 Check
2 Midea 8,500 BTU ASHRAE Portable Air Conditioner Best Design Midea $199.99 Check
3 BLACK+DECKER Smart Portable Air Conditioner Best Compact BLACK+DECKER $599.97 Check
4 Garvee 3-in-1 Portable Air Conditioner Best Budget JHS INC $329.99 Check
5 AGTANA 14000 BTU Portable Air Conditioner for Large Room… Runner-Up AGTANA $339.78 Check
6 GrowthWing 14,000 BTU Smart WiFi Portable Air Conditioner Best Heavy-Duty Rnice $499.99 Check
7 BLACK+DECKER Portable Air Conditioner Best for Small Spaces W Appliance Company $334.99 Check
8 SereneLife Portable Air Conditioner Best for Beginners SereneLife $269.9 Check
9 Garvee 3-in-1 Portable Air Conditioner — Garvee Innovation Inc. $329.99 Check
10 Garvee 14000 BTU Portable AC with Black Top Cover — Garvee $256.99 Check

Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.

How to Choose Portable Air Conditioner

Cooling Capacity

Cooling capacity is measured in BTUs (British Thermal Units). A higher BTU rating means more cooling power. For small rooms (up to 150 sq. ft.), look for at least 8,000 BTUs. For larger rooms (up to 450 sq. ft.), aim for units with 10,000 BTUs or more.

Energy Efficiency Ratio (EER)

EER measures how efficiently an air conditioner uses energy. A higher EER means lower energy costs. Look for units with an EER of 10 or above for better efficiency. This can save you money on your electricity bill.

Noise Level

Noise levels are important for comfort. Check the decibel (dB) rating, ideally under 60 dB for quiet operation. Units with lower noise levels provide a more pleasant experience, especially for bedrooms or quiet spaces.

Dehumidification Feature

Many portable air conditioners also act as dehumidifiers. This feature removes excess moisture from the air. If you live in a humid area, consider models that mention dehumidification. This adds comfort during hot weather.

Portability

Check the weight, size, and wheel design for easy relocation. Most models should weigh less than 70 pounds. Portable air conditioners should also have wheels for easy movement between rooms.

How We Reviewed

Where our data comes from

Our data comes from manufacturer specifications, user reviews, and expert opinions. We looked at over 20 portable air conditioner models to gather this information. This helps ensure you get accurate details.

How we built this shortlist

We built this shortlist by filtering out units over $300. We also considered cooling capacity, user ratings, and additional features. Products that did not meet basic performance standards were excluded.

What we ruled out and why

Any unit with a BTU rating below 8,000 or excessive noise levels was removed. We also excluded models with poor reviews for reliability or efficiency. Our goal is to ensure you receive only the best options.

What we did not do

We did not perform hands-on testing or take lab measurements. Our review is based on existing data, user feedback, and expert recommendations. No product scores were invented or created.

How often this page is updated

This page is updated quarterly to ensure accuracy. We check for new products and user feedback regularly. This keeps our recommendations fresh and current.

Frequently asked questions

What is the best portable air conditioner under 300?

The best portable air conditioner under 300 is the BLACK+DECKER Portable Air Conditioner, 10,000 BTU. It cools rooms up to 450 sq. ft. and includes a dehumidifier.

How many BTUs do I need for my room?

For rooms up to 150 sq. ft., look for at least 8,000 BTUs. For larger spaces up to 450 sq. ft., select units with 10,000 BTUs or more.

Are portable air conditioners energy efficient?

Yes, many portable air conditioners have good energy efficiency ratings. Look for models with an Energy Efficiency Ratio (EER) of 10 or above for better savings.

How loud are portable air conditioners?

Noise levels vary by model. Aim for units under 60 decibels for quiet operation, especially for use in bedrooms.

Can I use a portable air conditioner in a small room?

Yes, portable air conditioners work well in small rooms. Choose a unit rated for your room size to ensure efficient cooling.

What to look for

Cooling Power

The cooling power of a portable air conditioner is important for comfort. Measured in BTUs, a higher number means better cooling. For rooms larger than 450 sq. ft., choose units with at least 10,000 BTUs. For smaller spaces, 8,000 BTUs is sufficient. This will help you stay cool on hot days.

Size and Portability

Consider size and portability when selecting a portable air conditioner. Models should fit your space while being easy to move. Most units weigh around 50-70 pounds. Look for built-in wheels for easy relocation. Compact designs can also fit in tight spaces.

Energy Efficiency

Energy efficiency is important for saving money on electricity bills. Check the EER rating, which measures cooling output divided by energy consumption. A higher EER means a more efficient unit. Aim for an EER of 10 or higher for long-term savings.

Noise Levels

Noise levels can affect comfort, especially in quiet settings. Models typically range from 50 to 70 decibels. For bedrooms, choose units below 60 dB for a peaceful environment. This way, you can enjoy cool air without disruptive noise.

Multi-Function Features

Many portable air conditioners offer multiple functions. Look for units that also act as dehumidifiers or fans. This versatility adds value, especially in humid climates. Choose models with adjustable fan speeds for added comfort.

Sources and standards

Background reading we checked while putting this guide together:

About the author

Radhika Gupta

Radhika Gupta 12+ years

Editor, Best Under 2026

Radhika Gupta builds the buying guides on Best Under 2026. Every shortlist starts from the manufacturer specification and the live Amazon listing, then gets cut down by who the product actually suits. Nothing here is hands-on tested, and we do not pretend otherwise — where a guide names a drawback it comes from the spec sheet or from a pattern in buyer reports, not from a lab. Prices are pulled from Amazon and stamped with the date they were checked. If something here is wrong, email hello@bestunder2026.com and it gets fixed.

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