10 Best Window Units 2026 in the United States

The Midea MAW12HV1CWT EasyCool Smart Inverter Air Conditioner Window Unit with Heat is a versatile option for large rooms up to 550 square feet, offering both cooling and heating functions. With a cooling capacity of 12,000 BTUs, this unit is designed to provide effective temperature control throughout the year. However, the heating function may not work efficiently when the outside temperature drops below 41°F.

It is equipped with a variety of useful features, including an LED display, multiple modes and speed settings, a 24-hour timer, and an energy-saving ECO mode, enhancing user convenience. Its compatibility with the SmartHome App and voice control via Alexa and Google Assistant allows remote operation, adding to its user-friendliness. The unit's energy efficiency is notable, with a high CEER rating of 13.3 and Energy Star certification, promising considerable energy savings.

A noise level as low as 45 dBA ensures quiet operation, making it suitable for bedrooms or home offices. Installation requires a window opening width between 24 to 38.5 inches and a vertical clearance of 14.5 inches. The air conditioner comes with an installation kit, remote control, and a washable filter for easy maintenance. However, its weight of 58 pounds might make installation a bit challenging for some users. Additionally, it requires regular cleaning of the filter to maintain optimal performance. This window unit is ideal for users looking for a combination of cooling and heating with modern smart features and energy efficiency, though its heating capabilities have some temperature limitations.

The LG 18,000 BTU Heat and Cool Window Air Conditioner is designed to efficiently cool or heat rooms up to 1,000 square feet, making it a solid choice for medium to large spaces. Its strong cooling capacity (18,000 BTUs) ensures that it can handle fairly large rooms without struggling. The unit features a Seasonal Energy Efficiency Ratio (SEER) of 11.1, which indicates decent energy efficiency for its size, helping to keep electricity costs reasonable during use. At 57 dB, the noise level is average for window units—noticeable but not overly disruptive for most daily activities. Installation is fairly straightforward with the included window kit, but keep in mind the unit is quite large and heavy (over 125 pounds), so having help during installation is advisable. The white matte finish is neutral and will fit most window styles. What sets this model apart is its smart technology: it supports WiFi control through LG ThinQ, and you can use Alexa or Google Assistant for voice commands, which is handy if you want to adjust settings without getting up. It also has a supplemental heating feature, allowing it to function year-round, which adds flexibility beyond just summer use.

Additional conveniences include customizable fan speeds, a 24-hour timer, and an auto-restart after power outages, which helps maintain comfort without manual intervention. The unit also alerts you when it’s time to clean the filter, which is a nice maintenance reminder. On the downside, the Energy Efficiency Ratio (EER) isn’t the highest compared to some premium models, so if you prioritize ultra-low energy costs, there might be better options. The noise might be a bit loud if you’re especially sensitive or planning to use it in a bedroom. Also, the 1-year warranty is standard but somewhat limited if you want longer protection. Taking all factors into account, this LG window unit balances strong cooling and heating capacity with smart features and reasonable efficiency, making it a great fit for those wanting versatile and connected climate control for medium to large rooms.

The LG 23,000 BTU Window Air Conditioner with Heat is a strong choice if you want to cool or heat medium to large rooms up to about 1400 square feet, like living rooms or offices. With 23,000 BTUs, it provides powerful cooling, and the supplemental heating option adds convenience for colder days, giving you year-round comfort from one unit. Its energy efficiency rating (SEER 11.3) is decent, helping reduce electricity costs somewhat, although it doesn’t carry a formal energy star rating.

Noise-wise, it runs quietly at around 50-51 decibels on low, so it won’t disturb your sleep or work. Installation requires a 230V power connection and the unit is fairly large and heavy, so make sure your window can support it and that you can handle the size (about 30.5 x 25.5 x 16.8 inches, 145 pounds). The included remote control and features like auto-restart (which turns the unit back on after a power outage) add ease of use, while the filter reminder helps with maintenance.

Some users may find the installation a bit challenging due to its size and weight, and the warranty covers only one year, which is shorter than some competitors. Also, while it offers two fan speeds, it might lack more advanced airflow customization found in pricier models. For those looking for a reliable, quiet, and versatile window unit that both cools and heats larger spaces, this LG model is a solid option, especially if you value simple controls and quiet operation.