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10 Best Costco Air Conditioners 2026 in the United States

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Our Top Picks

#1

Winner

GE Electronic Window Air Conditioner 5000 BTU, White, Efficient Cooling for Smaller Areas Like Bedrooms and Guest Rooms, 5K BTU Window AC Unit with Easy Install Kit

Rating
10.0
Chosen by1,265
BTU (British Thermal Units)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
188 reviews

BTU (British Thermal Units)
The air conditioner cools small rooms efficiently, maintaining comfortable temperatures even in bedrooms and smaller spaces.
Energy Efficiency Ratio (EER)
Energy efficiency is modest, and the unit does not include smart features or Energy Star certification, which may affect electricity consumption.
Noise Level
The unit operates quietly on low speed, providing cool air without disturbing sleep or work.
Type of Air Conditioner
Installation is straightforward and hassle-free, making it easy to set up in most double-hung windows.
Smart Features
Energy efficiency is modest, and the unit does not include smart features or Energy Star certification, which may affect electricity consumption.
Filter Type
The slide-out filter simplifies cleaning, helping maintain air quality and unit performance over time.

The GE 5000 BTU Electronic Window Air Conditioner is designed specifically for smaller spaces like bedrooms or home offices up to around 150 square feet. Its cooling power is well suited for these rooms, providing efficient and quick relief from heat. The unit operates at a noise level of 52 dB, which is fairly quiet and should not disturb you during sleep or work. It offers three cooling modes and fan speeds, giving you flexibility to adjust the temperature to your liking. Installation is user-friendly with an included EZ Mount kit, fitting most double-hung windows without much hassle. Another convenient feature is the slide-out filter, making cleaning simple and helping maintain good air quality and unit performance.

On the downside, the energy efficiency is modest with a SEER of 2.6 and it lacks Energy Star certification, so it might consume more electricity compared to more advanced models. Additionally, it doesn’t include any smart features like Wi-Fi control or app integration, which some modern users might expect for convenience. The unit also comes with a built-in dehumidifier, which is useful in humid climates.

This GE air conditioner represents a reliable, straightforward choice if you need an affordable, easy-to-install cooling solution for a small room. However, if energy savings or smart home compatibility are priorities, you might want to explore other options.

Rating
10.0
Chosen by1,265
BTU (British Thermal Units)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
188 reviews

BTU (British Thermal Units)
The air conditioner cools small rooms efficiently, maintaining comfortable temperatures even in bedrooms and smaller spaces.
Energy Efficiency Ratio (EER)
Energy efficiency is modest, and the unit does not include smart features or Energy Star certification, which may affect electricity consumption.
Noise Level
The unit operates quietly on low speed, providing cool air without disturbing sleep or work.
Type of Air Conditioner
Installation is straightforward and hassle-free, making it easy to set up in most double-hung windows.
Smart Features
Energy efficiency is modest, and the unit does not include smart features or Energy Star certification, which may affect electricity consumption.
Filter Type
The slide-out filter simplifies cleaning, helping maintain air quality and unit performance over time.
#2

Humhold 14000 BTU Portable Air Conditioners with Remote Control, 3-in-1 Free Standing Cooling AC Unit with Fan & Dehumidifier, Cools Room up to 700 sq.ft, Smart/Sleep Mode,3 Speed,Auto Swing,24H Timer

Rating
10.0
BTU (British Thermal Units)
Energy Efficiency Ratio (EER)
Smart Features

Most important from
777 reviews

BTU (British Thermal Units)
The Humhold AC cools rooms quickly and efficiently, making it perfect for spaces like workshops or bedrooms, even in high temperatures.
Energy Efficiency Ratio (EER)
Energy consumption is reasonable, with minimal impact on electricity bills, even when used extensively.
Smart Features
The remote control and adjustable settings offer great convenience, enhancing user experience with features like sleep mode for quiet operation.

The Humhold 14000 BTU Portable Air Conditioner stands out with its powerful cooling capacity, efficiently serving spaces up to 700 square feet. This makes it ideal for larger rooms or open-concept areas. The unit offers a 3-in-1 functionality, providing cooling, fan, and dehumidification options. It allows for temperature control between 61°F and 88°F and helps manage humidity levels effectively. The smart features include a built-in temperature sensor that adapts the unit's function based on room temperature, ensuring optimal comfort with minimal effort. The sleep mode allows for quieter operation, maintaining noise levels below 48dB, which is advantageous for light sleepers or use in quiet environments.

One of the notable conveniences is the no-drain system, which uses a self-evaporation process to minimize maintenance. However, in humid settings, manual drainage might be necessary, which could be a slight inconvenience. The portable design and easy installation process involving a window sealing kit and exhaust hose offer flexibility in placement and setup.

Potential downsides include its reliance on manual drainage in very humid conditions and potentially cumbersome window installation for some users. The energy efficiency ratio isn't specified, which might be a point of consideration for those seeking energy-saving options. The Humhold unit is a versatile choice for users looking for multi-functional cooling solutions, particularly those who prioritize ease of use and mobility.

Rating
10.0
BTU (British Thermal Units)
Energy Efficiency Ratio (EER)
Smart Features

Most important from
777 reviews

BTU (British Thermal Units)
The Humhold AC cools rooms quickly and efficiently, making it perfect for spaces like workshops or bedrooms, even in high temperatures.
Energy Efficiency Ratio (EER)
Energy consumption is reasonable, with minimal impact on electricity bills, even when used extensively.
Smart Features
The remote control and adjustable settings offer great convenience, enhancing user experience with features like sleep mode for quiet operation.
#3

LG 8,000 Window Air Conditioner, 115V, 350 Sq.Ft. (14' x 25' Room Size), Quiet Operation, Electronic Control with Remote, 3 Cooling & Fan Speeds, Auto Restart, 8000 BTU, White

Rating
9.4
BTU (British Thermal Units)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
268 reviews

BTU (British Thermal Units)
Cools very quickly and performs well beyond the size of the intended room, ensuring comfortable temperatures fast.
Energy Efficiency Ratio (EER)
Energy saver mode adds efficiency without sacrificing cooling power.
Noise Level
Operates quietly with low noise levels, making it less disruptive during use.
Smart Features
Auto Restart feature is convenient, ensuring the unit powers back on after outages without manual reset.
Filter Type
The filter clean indicator may sometimes activate prematurely, even when the filter is clean.

The LG 8,000 BTU Window Air Conditioner is a solid choice for cooling medium-sized rooms up to 350 square feet, such as bedrooms or living rooms. It offers a good cooling capacity that fits well with the intended room size, ensuring comfortable temperatures without excessive energy use, supported by a decent Seasonal Energy Efficiency Ratio (SEER) of 11.4. One of its strengths is its quiet operation, with noise levels around 53-54 decibels in low mode, making it less disruptive compared to louder units.

You can customize your comfort with three cooling and fan speeds plus an Auto Cool mode, controlled easily via electronic buttons or the included remote, which adds convenience. The Auto Restart feature automatically powers the unit back on after a power outage, so you don’t have to manually reset it. It does not have smart features like Wi-Fi connectivity, which some newer models offer for app control or voice commands. The filter includes a light reminder to signal when cleaning is needed.

Its size and weight are typical for window units, though installation may require some effort. While the unit has a modest energy efficiency rating and quiet operation, it lacks advanced Energy Star certification, so it might not be the best pick for those prioritizing the highest energy savings. This LG air conditioner is a practical and user-friendly option for those wanting reliable cooling in a mid-sized space without complexity or extra smart features.

Rating
9.4
BTU (British Thermal Units)
Energy Efficiency Ratio (EER)
Noise Level

Most important from
268 reviews

BTU (British Thermal Units)
Cools very quickly and performs well beyond the size of the intended room, ensuring comfortable temperatures fast.
Energy Efficiency Ratio (EER)
Energy saver mode adds efficiency without sacrificing cooling power.
Noise Level
Operates quietly with low noise levels, making it less disruptive during use.
Smart Features
Auto Restart feature is convenient, ensuring the unit powers back on after outages without manual reset.
Filter Type
The filter clean indicator may sometimes activate prematurely, even when the filter is clean.

Buying Guide for the Best Costco Air Conditioners

Choosing the right air conditioner can make a significant difference in your comfort, especially during hot weather. When shopping for an air conditioner at Costco, it's important to consider several key specifications to ensure you get the best fit for your needs. Understanding these specs will help you make an informed decision and find an air conditioner that provides efficient cooling, fits your space, and meets your specific requirements.
BTU (British Thermal Units)BTU measures the cooling capacity of an air conditioner. The higher the BTU, the more powerful the unit is at cooling larger spaces. For small rooms (up to 150 sq. ft.), a unit with 5,000-6,000 BTU is sufficient. Medium-sized rooms (150-300 sq. ft.) require 7,000-8,000 BTU, while larger rooms (300-450 sq. ft.) need 10,000-12,000 BTU. For very large spaces, you may need a unit with 14,000 BTU or more. Choose a BTU rating that matches the size of the room you want to cool for optimal efficiency.
Energy Efficiency Ratio (EER)The Energy Efficiency Ratio (EER) indicates how efficiently an air conditioner uses electricity to cool a room. A higher EER means better energy efficiency, which can lead to lower electricity bills. EER is calculated by dividing the BTU rating by the unit's wattage. Look for air conditioners with an EER of 10 or higher for good energy efficiency. If you prioritize saving on energy costs, opt for a unit with a higher EER.
Noise LevelNoise level is measured in decibels (dB) and indicates how loud the air conditioner will be when operating. Lower dB levels mean quieter operation. For a peaceful environment, especially in bedrooms or living rooms, look for units with noise levels below 50 dB. If noise is less of a concern, you can consider units with higher dB levels. Choose based on where you plan to use the air conditioner and your sensitivity to noise.
Type of Air ConditionerThere are several types of air conditioners, including window units, portable units, and split systems. Window units are installed in a window and are ideal for single rooms. Portable units can be moved from room to room and are good for temporary cooling. Split systems have an indoor and outdoor unit and are suitable for cooling multiple rooms or larger spaces. Consider the installation requirements and flexibility you need when choosing the type of air conditioner.
Smart FeaturesSmart features include Wi-Fi connectivity, remote control via smartphone apps, and compatibility with voice assistants like Alexa or Google Assistant. These features allow you to control the air conditioner remotely, set schedules, and monitor energy usage. If you value convenience and tech integration, look for units with smart features. If you prefer a more traditional approach, you can opt for models without these features.
Filter TypeAir conditioners come with different types of filters, such as standard, HEPA, or activated carbon filters. Standard filters capture dust and larger particles, HEPA filters are more effective at trapping smaller particles like pollen and pet dander, and activated carbon filters help reduce odors. Choose a filter type based on your air quality needs. If you have allergies or pets, a HEPA filter may be beneficial. For general use, a standard filter may suffice.

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