10 Best Air Conditioner Window 2025 in the United States

The Frigidaire 10,000 BTU window air conditioner is designed to cool rooms up to 450 square feet, making it a solid choice for medium-sized living areas. With a cooling power of 10,000 BTUs, it provides effective temperature control, and the unit offers customizable comfort through six-way directional airflow and three fan speeds. Energy efficiency is decent with an Energy Efficiency Ratio (EER) of 10.9, and features like Eco Mode and Sleep Mode help reduce power use while maintaining comfort. Although it is not Energy Star certified, these modes contribute to energy savings.

The noise level is quite low at about 53-54 decibels, which is roughly the sound of a quiet conversation, so it won't be disruptive in living spaces. Installation is straightforward with the included window kit, and the unit's dimensions are compact enough for most standard windows. Additional conveniences include a remote control, a washable dust filter with a filter-clean alert, a 24-hour timer, and a Dry Mode that helps reduce humidity.

One downside is the relatively short one-year manufacturer warranty, which might be a consideration if you want longer coverage. Also, it’s not the highest-ranking unit in energy efficiency, so electricity costs may be a bit higher over time compared to top-tier models. This Frigidaire model is a reliable and quiet window AC suitable for users seeking good cooling performance with useful features in a mid-sized room, though those highly focused on maximum energy savings might want to explore more efficient options.

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 23,000 BTU window air conditioner with heat is a strong choice for cooling and heating larger rooms up to 1400 square feet, like living rooms or offices. With its high cooling capacity, it can handle medium to large spaces effectively. The unit operates quietly at about 50-51 decibels, which is roughly the noise level of a normal conversation, so it won’t disturb your work or sleep. It also includes a heat option, making it useful year-round, and an auto-restart feature that turns it back on after a power outage, which is convenient.

Installation requires a 230-volt power source and the unit is quite large and heavy (over 140 pounds), so it might need a sturdy window and some effort to set up. The Energy Efficiency Ratio (EER) is 11.3, which is decent but not top-tier for saving on electricity bills. Additional helpful features include multiple fan speeds, a dehumidifier to reduce moisture, and a remote control for easy operation. It also has a filter light reminder to prompt maintenance.

The unit is bulky and may not fit all window sizes easily, and it comes with only a one-year warranty. For those seeking a reliable, powerful air conditioner that also heats your space and can accommodate its size and moderate energy use, this LG model is a practical option.