5 Best Portable Air Conditioner for 300 Square Feet [In 2025]
When the temperatures rise, having a reliable and efficient portable air conditioner can make all the difference in keeping your home or office comfortable. In this comprehensive review, we’ll explore some of the top portable air conditioners designed for spaces up to 300 square feet.
Portable air conditioners offer a flexible and convenient solution for cooling specific areas without the need for permanent installation. They are particularly useful for rooms or spaces that may not have access to central air conditioning or where a window unit is not feasible. These compact, self-contained units can be easily moved from one room to another, providing on-demand cooling wherever you need it most.
Table of Contents
Our Top 3 Picks
- SMARTCOOL – Midea 10,000 BTU ASHRAE (7,100 BTU SACC) Portable Air Conditioner delivers fast, effective cooling for spaces Up to 300 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.
- POWERFUL COOLING – Experience powerful cooling with this AC unit. Comes with a metal control box for safety, it prevents fire and explosion. With a cooling capacity of 8000 BTU (ASHRAE) and 5000 BTU (DOE), stay cool and comfortable in any space.
- VERSATILE 4 IN 1 OPERATION – This air conditioner offers 3 operation modes: Auto AC Cooling, Dehumidifier, Heater, and Fan. With coverage of 300 sq. ft. and air flow rate of 270 cubic meters per hour it ensures convenient wide-area climate control.
- TECHNICAL SPECS – Enjoy time, temp, and fan speed adjustment settings with this portable AC. With a power output of 880W and R32 refrigerant, it includes automatic mode, sleep mode, & power failure memory, making it user-friendly for seniors & kids.
- PORTABLE AND EASY TO MOVE – Move freely with the air conditioner portable unit’s universal castors allowing for easy movement and portability, ideal for home, office, school, and business rooms. Also includes a universal window mount AC exhaust kit.
- TECHNICAL SPECS – Enjoy time, temp, and fan speed adjustment settings with this portable AC. With a power output of 880W and R32 refrigerant, it includes automatic mode, sleep mode, & power failure memory, making it user-friendly for seniors & kids.
- 8,000 BTU Cooling Capacity: GRIDR 8,000 BTU ASHRAE (4,600 BTU SACC) portable air conditioner can quickly cool spaces up to 300 square feet, delivering powerful cooling performance. It is perfect for dorms, offices, bedrooms, living rooms, and other spaces, ensuring you enjoy a cool and comfortable environment even during the hot summer months.
- Reduced Drainage Needs: Portable ac units for rooms features a built-in condensate water evaporation system, effectively reducing the need for drainage. However, in humid environments such as basements or laundry rooms, drainage is required every 10 hours. You can open the bottom spout or use the drain hose to continuously drain the water. Note: Ensure the power is turned off before draining.
- Ultra-Quiet Operation: AC unit for bedroom is designed with dual motors, making it energy-efficient and enhancing cooling performance. The compressor is surrounded by a new noise isolation system, reducing noise levels to just 45dB, ideal for quiet spaces like bedrooms and offices.
- 4-in-1 Versatile AC Unit: Cooling/Fan/Dehumidifier/Sleep: Enjoy personalized cooling with our portable air conditioners, perfect for all scenario. In Cooling mode, you can freely adjust the temperature (61°F – 88°F), and the adjustable fan speed ensures a comfortable night’s sleep. Note: Fan speed adjustment is only available in Cooling and Fan modes.
- Portable & Easy to Move: Air conditioner portable is equipped with 360° rotating wheels and a hidden handle, allowing you to easily move it to any room. The included window installation kit is simple to use and fits horizontal and vertical sliding windows from 25’’ to 49’’, making setup a breeze in just a few minutes.
5 Best Portable Air Conditioner for 300 Square Feet Reviews
LG 7,000 BTU Portable Air Conditioner
Specs:
– Cooling capacity: 7,000 BTU
– Recommended room size: Up to 300 sq. ft.
– Dimensions: 16.1 x 13.8 x 27.6 inches
– Weight: 47.4 lbs
– Noise level: 53 dB
Pros:
– Powerful cooling performance for small to medium-sized rooms
– Quiet operation for comfortable use
– Includes a remote control for easy adjustments
– Automatic restart feature after power outages
– Washable air filter for easy maintenance
Cons:
– Some users report issues with water leakage
– May not be suitable for larger spaces beyond 300 sq. ft.
TOSOT 9,700 BTU Portable Air Conditioner
Specs:
– Cooling capacity: 9,700 BTU
– Recommended room size: Up to 300 sq. ft.
– Dimensions: 11.8 x 15.4 x 30.4 inches
– Weight: 54 lbs
– Noise level: N/A
Pros:
– Powerful cooling for medium-sized rooms
– Includes dehumidifier and fan functions
– Wi-Fi connectivity for remote control and scheduling
– Reusable air filter for easy maintenance
– Comes with a window installation kit for easy setup
Cons:
– Some users report issues with the Wi-Fi connectivity
– Slightly louder operation compared to some other models
8,000 BTU Portable Air Conditioner
Specs:
– Cooling capacity: 8,000 BTU
– Recommended room size: Up to 350 sq. ft.
– Dimensions: 15.15 x 13.46 x 34.84 inches
– Weight: N/A
– Noise level: N/A
Pros:
– Provides effective cooling for medium to large rooms
– Includes dehumidifier and fan modes
– Automatic evaporation system to reduce water drainage
– Easy installation with included window kit
– 24-hour timer for convenient scheduling
Cons:
– Some users report inconsistent cooling performance
– Noise level may be higher than some other models
SereneLife 8,000 BTU Portable Air Conditioner
Specs:
– Cooling capacity: 8,000 BTU
– Recommended room size: Up to 350 sq. ft.
– Dimensions: 15.7 x 13.8 x 27.2 inches
– Weight: 51.1 lbs
– Noise level: N/A
Pros:
– Powerful cooling performance for medium-sized rooms
– Includes dehumidifier and fan functions
– Wi-Fi connectivity for remote control and app integration
– Comes with a window installation kit for easy setup
– Sleek and compact design
Cons:
– Some users report issues with the Wi-Fi connectivity
– Noise level may be higher than some other models
Windowless Portable Air Conditioner
Specs:
– Cooling type: Evaporative
– Recommended room size: Up to 350 sq. ft.
– Dimensions: 15.15 x 13.46 x 34.84 inches
– Weight: N/A
– Noise level: 46 dB
Pros:
– No window installation required, making it versatile
– Includes fan, cooling, and dehumidifier modes
– Large 2-gallon water tank for up to 20 hours of operation
– Quiet operation at just 46 dB
– Includes a remote control for easy adjustments
Cons:
– May not provide as powerful cooling as traditional portable ACs
– Evaporative cooling may not be as effective in very humid environments
– Some users report inconsistent cooling performance
Buying Guide
When choosing the best portable air conditioner for a 300 square foot space, consider the following factors:
Cooling Capacity
– Look for a unit with a cooling capacity of at least 7,000 BTU to effectively cool a 300 sq. ft. space.
– Higher BTU ratings (up to around 9,700 BTU) can provide more powerful cooling for larger rooms.
– Ensure the unit is rated for the appropriate room size.
Features
– Look for features like remote control, timer, dehumidifier, and fan modes for added convenience and versatility.
– Wi-Fi connectivity and app integration can allow for remote control and scheduling.
– Automatic restart after power outages and self-evaporating systems can be helpful.
Noise Level
– Consider the noise level, measured in decibels (dB), to ensure the unit won’t be too disruptive.
– Aim for a noise level below 55 dB for a more peaceful environment.
Portability
– Look for units with casters or wheels for easy mobility, allowing you to move the air conditioner to different rooms as needed.
– Lightweight designs, typically under 60 lbs, can make the unit easier to transport.
Installation
– Ensure the unit comes with a window installation kit for easy setup.
– Windowless or hose-free models can provide more flexibility in placement, but may not be as effective as traditional portable ACs.
FAQ
1. What is the recommended BTU for a 300 square foot room?
2. Can a portable air conditioner be used in a room without a window?
3. How much electricity do portable air conditioners typically use?
4. How often do I need to clean the air filter on a portable AC?
5. Can I use a portable air conditioner in the winter for heating?
Conclusion
Choosing the best portable air conditioner for a 300 square foot space requires considering factors like cooling capacity, features, noise level, portability, and installation requirements. The models reviewed in this guide offer a range of options to suit different needs and budgets, providing effective cooling and versatility for your home or office. By carefully evaluating your specific requirements and the features of each unit, you can find the perfect portable air conditioner to keep you comfortable all season long.
