10 Best Small Window Unit 2026 in the United States

The Amazon Basics 5000 BTU Small Window Air Conditioner is a solid choice for cooling small spaces up to 150 square feet, such as bedrooms or home offices. Its 5000 BTU capacity is suitable for these areas, providing enough power to keep the room comfortably cool. With an Energy Efficiency Ratio (EER) reflected by a SEER of 14, it balances performance and energy use reasonably well, which can help keep electricity bills in check. Noise-wise, it operates quietly at about 56 decibels, making it a good option if you want to avoid distraction while sleeping or working. Installation is straightforward for most standard windows, thanks to adjustable side panels and a full mounting kit, though you might need a screwdriver as it’s not included. The unit’s size is compact enough to fit standard window dimensions without being bulky.

Additional handy features include a washable filter that helps capture dust and allergens, making maintenance easy and improving air quality. It also offers customizable comfort with 7 temperature settings, 2 fan speeds, and adjustable air direction, allowing you to tailor airflow to your preference. On the downside, the cooling capacity limits its use to small rooms only; it won’t be effective in larger spaces. Also, it lacks some advanced features like remote control or smart connectivity that more expensive models might offer.

Though installation is simple, it’s not tool-free, and some users might find the mechanical controls less modern compared to digital interfaces. This unit represents a practical, budget-friendly option for anyone needing efficient cooling in a small room, especially if straightforward use and easy upkeep are priorities.

The LG 12,000 BTU Window Air Conditioner is a solid choice for cooling rooms up to 550 square feet, making it suitable for bedrooms, living rooms, and medium-sized apartments. The unit's cooling power is commendable, ensuring a comfortable environment even during hot days. The noise level is impressively low at 52 dB, allowing for quiet operation, which is beneficial for both work and sleep environments.

Users can enjoy customizable cooling with 3 fan speeds and auto cool mode, providing flexibility based on personal preferences. The inclusion of a remote control and digital control panel enhances usability, allowing for convenient adjustments from across the room. Additionally, the 4-way air deflection feature ensures even cooling distribution throughout the room. The unit also comes with a timer function, enabling users to set specific cooling schedules to save on energy costs.

Installation is simplified with the provided window installation kit, ensuring the unit fits snugly into standard window sizes. On the downside, the Seasonal Energy Efficiency Ratio (SEER) is 13, which is decent but not the highest in terms of energy efficiency. The unit is not Energy Star certified, which may be a consideration for those looking to minimize their energy consumption further. Despite these points, the LG 12,000 BTU Window Air Conditioner offers reliable cooling performance with practical features tailored for convenient use.

The LG LW1521ERSM1 is a solid choice for anyone needing a window air conditioner to cool rooms up to around 700 square feet, making it suitable for larger bedrooms or living rooms. Its 14,000 BTU cooling capacity means it can handle heat effectively in spaces of this size. It also offers good energy efficiency with a Seasonal Energy Efficiency Ratio (SEER) of 11.2, which helps keep electricity use reasonable compared to many other window units. Noise-wise, it’s relatively quiet, operating around 52-53 decibels on low settings, so it won’t be too disruptive when running, ideal for bedrooms or home offices. Installation fits a standard window size, and the unit’s dimensions and included installation kit make setup manageable for most users.

One nice feature is its WiFi capability through LG ThinQ, allowing control via smartphone apps or voice commands with Alexa and Google Assistant, adding convenience if you like smart home gadgets. It also has multiple fan speeds, an auto-restart function after power outages, and a dehumidifier function, which are handy extras. However, the unit comes with only a 1-year warranty, which is shorter than some competitors offer, and it doesn’t have a dedicated energy star rating, which might matter if you’re focused on energy savings. Weighing about 37 pounds, it’s a bit heavier than smaller units, so you may want some help during installation.

This LG air conditioner delivers strong cooling power, smart features, and quiet operation, making it a good fit for larger rooms and tech-savvy users. Those prioritizing the longest warranties or highest energy star ratings may want to compare other options.