10 Best Air Conditioner Window 2026 in the United States

The LG 24,500 BTU Smart Window Air Conditioner is designed for large rooms up to 1560 sq. ft., making it suitable for bedrooms, living rooms, or apartments. It offers robust cooling power and features smart controls through LG ThinQ technology, compatible with Amazon Alexa and Google Assistant, allowing remote operation. The unit has a cooling capacity of 24,500 BTUs and an Energy Efficiency Ratio (EER) of 10.3, which is decent but not the highest in energy efficiency.

This air conditioner operates at a relatively low noise level of 50 dB on low settings, though it can reach up to 61 dB under some conditions, which may still be noticeable in quieter environments. It includes three cooling and fan speeds and a dehumidification function that can remove up to 1.8 pints of moisture per hour, enhancing comfort further. Additional features include a user-friendly digital control panel, a timer, a filter check reminder light, and a power failure auto restart. The installation kit and remote control are included, but note that the unit is quite heavy at 132 pounds, which may pose challenges during installation.

The lack of Energy Star certification may be disappointing for those seeking maximum energy savings. Nonetheless, the convenience of smart features and the strong cooling capacity make this air conditioner a solid choice for larger spaces. The 24-hour timer and the filter check reminder add extra ease of use.

The Amazon Basics 5000-BTU Window Air Conditioner is designed for small rooms up to 150 square feet, making it a good choice for bedrooms, home offices, or compact living areas. Its 5000 BTU cooling capacity is sufficient for these spaces, offering cool air without overloading your electricity use. With an Energy Efficiency Ratio (EER) reflected by its SEER of 14, it provides decent efficiency to help keep energy costs reasonable. Noise level at 56 dB is relatively quiet for an air conditioner, so it won't disturb sleep or work much, though it’s not the absolute quietest model available. Installation is straightforward for anyone with basic DIY skills—it fits standard windows (23 to 36 inches wide) and comes with an adjustable kit, but you’ll need a screwdriver on hand. The unit is compact and lightweight enough to handle without too much trouble.

Additional features include a washable filter that traps dust and allergens, helping improve air quality, plus customizable comfort settings like 7 temperature options, 2 fan speeds, and direction control to tailor airflow. It also offers a fan-only mode and a dehumidifying function, adding versatility beyond just cooling. However, this AC is best suited for small spaces and might struggle to cool larger rooms effectively. Also, mechanical controls might feel less modern compared to digital interfaces.

This model is a practical, affordable option if you want a simple, effective air conditioner for a small room without advanced smart features.

The LG 18,000 BTU Dual Inverter Smart Window Air Conditioner is a strong choice for cooling large rooms up to 1,000 square feet, making it suitable for bedrooms, living rooms, or apartments. Its cooling power is robust, offering efficient temperature control for sizable spaces. One of its standout features is the energy efficiency; it is Energy Star certified and uses an inverter compressor, which helps reduce electricity consumption compared to non-inverter models. With a Seasonal Energy Efficiency Ratio (SEER) of 11.3 and an annual energy consumption of 1590 watts, it can help lower your energy bills.

Noise level is impressively low at 44 decibels, which is quieter than many window units. This means it won’t disturb your sleep or work, contributing to a more comfortable environment. Installation requires a window opening roughly between 29 to 41 inches wide and 17 to 19 inches high, so you should measure your window to ensure it fits. The unit is relatively large and heavy (about 110 pounds), so it may need two people to install safely. Additional features enhance convenience and usability: it can be controlled via the LG ThinQ smartphone app, supports voice commands through Amazon Alexa and Google Assistant, and includes multiple fan speeds and a dehumidifier function. It also has a washable filter with a reminder light, helping maintain air quality and unit efficiency.

The unit runs on 230 volts, so you’ll need to make sure your power supply matches. While the price and higher upfront cost might be a consideration, the energy savings and quiet operation provide good value for those wanting a reliable, smart, and efficient cooling solution. The one-year warranty offers reasonable protection, though some might prefer longer coverage. This LG window AC is well suited for users looking to cool larger rooms efficiently and quietly, with smart features for easy control. It balances power, energy savings, and quiet operation nicely but requires a compatible window size and electrical setup.