10 Best Air Conditioner Window 2025 in the United States

The GE 5,100 BTU window air conditioner is a solid choice for cooling small rooms up to 150 square feet, such as bedrooms, home offices, or small living spaces. Its cooling power is well-suited for these areas, providing quick relief from heat without overloading the space. The unit operates at about 56 decibels, which is moderately quiet and generally won't disturb you during sleep or work. Installation is designed to be straightforward with the included EZ Mount kit, fitting most double hung windows without much hassle.

The unit offers two fan speeds and two cooling modes with 10 adjustable temperature settings, giving you decent control over comfort levels. However, the energy efficiency ratio (EER) is around 2.6, which is on the lower side, meaning it might consume more energy compared to higher-rated models, possibly leading to higher electricity bills. It uses the environmentally friendlier R410A refrigerant and features a washable filter, making maintenance easy and helping the unit run efficiently over time. One downside is its 1-star energy rating, so if energy savings are a top priority, this might not be the best pick.

The unit’s size and fixed chassis limit it to windows roughly between 21.9 to 36 inches wide by 13.4 inches tall, so measuring your window beforehand is important. The 1-year replacement warranty offers some peace of mind. This GE model is a practical, budget-friendly option for cooling small rooms, especially if you want simple installation and easy maintenance, but it may not be the quietest or most energy-efficient choice available.

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.