10 Best Costco Window Air Conditioners 2026 in the United States

The LG 12,000 BTU Smart Window Air Conditioner is a strong option for cooling medium to large rooms up to 550 square feet, making it suitable for spaces like kitchens or living rooms. With a cooling capacity of 12,000 BTUs, it effectively handles larger areas, which is a big plus if you need powerful cooling. Its noise level is fairly low at 52 decibels on the lowest setting, so it won’t be too disruptive in quieter environments. The unit offers three fan speeds and a 4-way air deflection to customize airflow, plus an auto cool mode for convenience.

One standout feature is the smart control compatibility: it works with LG ThinQ, Amazon Alexa, and Google Assistant. This allows you to adjust settings remotely via your phone or voice commands, which adds flexibility and modern convenience. The auto restart function is useful too—it automatically turns the AC back on after a power outage. On the downside, this model is not Energy Star certified, and its Seasonal Energy Efficiency Ratio (SEER) is 12, which might mean higher electricity use compared to more efficient units. The size is standard for this type of window AC, so you’ll want to ensure your window can accommodate its 22.2” x 23.6” x 15” dimensions. It includes helpful extras like a filter light reminder and a dehumidifier function, which can improve air quality and comfort.

With a solid customer rating of 4.2 out of 5 from over 16,000 reviews, it appears to be a reliable choice for those wanting a smart, powerful window air conditioner. If energy efficiency is a top priority, you might want to compare this with Energy Star-rated models. This unit is well suited for users seeking easy control and strong cooling in larger rooms.

The LG 8,000 BTU window air conditioner is designed to cool rooms up to 350 square feet, making it a solid choice for medium-sized bedrooms or living areas. Its cooling power is suitable for spaces around 14 by 25 feet, providing comfortable temperatures without being oversized. Energy efficiency is decent with a SEER rating of 11.4, which means it won't overly increase your electricity bill but isn’t the most energy-saving model available. Noise-wise, it runs quietly at about 53-54 decibels on low settings, so it won’t disturb your peace or sleep much, which is a nice plus. The unit is fairly compact at roughly 20 by 20 by 12 inches, which helps with fitting into standard windows without too much hassle.

It includes user-friendly electronic controls and a remote for easy temperature and fan speed adjustments. The three different fan speeds plus an Auto Cool mode give you flexibility for comfort. Another handy feature is Auto Restart, so if the power goes out, the air conditioner turns back on automatically, saving you from having to reset it. A filter light reminder lets you know when it’s time to clean the filter, helping maintain good air quality and performance.

On the downside, while it has a good balance of features, it comes with only a 1-year limited warranty, which is shorter than some competitors offer. Also, the noise level, although low, might still be noticeable in very quiet rooms or for light sleepers. For those seeking a reliable, moderately priced window AC unit for a medium space with easy controls and quiet operation, this LG model represents a practical option.

The LG 8000 BTU Window Air Conditioner is designed to cool small to medium rooms up to about 350 square feet, making it a solid choice for bedrooms, offices, or living rooms of moderate size. Its 8,000 BTU power offers effective cooling without being overly large. The unit operates at around 52 decibels, which is relatively quiet compared to some window ACs, so it won’t be too distracting in quiet spaces. Installation is straightforward thanks to the included EZ Mount kit, which works with double-hung windows, and the slide-out washable dust filter makes maintenance easy, helping the unit stay efficient over time.

Another plus is the smart features: you can control the AC remotely via the LG ThinQ app or even use voice commands through Google Assistant or Alexa, which adds convenience especially if you want to adjust settings from another room or while away from home. The unit also uses eco-friendly R32 refrigerant and has a decent Seasonal Energy Efficiency Ratio (SEER) of 11.4, which means it’s reasonably energy efficient for its size, helping to avoid high electric bills.

On the downside, it has a moderate noise level that, while generally quiet, might still be noticeable in very quiet environments during operation. The warranty is basic at one year for parts and labor, which is typical but somewhat limited for added peace of mind. Also, while the unit includes many useful features, it doesn’t have a formal energy star rating or a high BEE star rating, which could matter for those prioritizing top-tier energy savings. This LG window AC is a dependable, feature-rich option for anyone needing reliable cooling in a small to medium room, especially if smart controls and easy upkeep are important, though it might not be ideal for those seeking the absolute quietest or most energy-efficient model.