10 Best Window Ac Unit For Sliding Window 2025 in the United States

The Midea MAW08V1QWT is an 8,000 BTU window air conditioner designed for single or double-hung windows between 22 to 36 inches wide and at least 13.75 inches high, making it suitable for many sliding windows. Its standout feature is the unique U-shaped design that allows the window to stay partially open, so you can enjoy fresh air and maintain your view. This model runs very quietly at just 32 decibels, thanks to its inverter technology, making it one of the quietest window AC units available.

It’s also energy efficient, with a SEER rating of 15 and ENERGY STAR certification, which means it uses about 35% less power than traditional models—good news for your electricity bill. The unit supports smart controls through Wi-Fi, letting you operate it remotely via an app or voice assistants like Alexa and Google Assistant, adding convenience. Installation is straightforward with a quick-snap bracket included, but the unit is somewhat heavy at 55.6 pounds, so you might want some help during setup.

While it cools rooms up to around 350 square feet effectively, it may struggle in larger spaces. The noise level and energy savings are impressive, but the price and weight could be a consideration for some buyers. This Midea AC is a solid choice if you want a quiet, energy-efficient window unit that doesn’t block your window view and offers smart features, especially suited for small to medium rooms with sliding windows.

The LG 8,000 BTU Window Air Conditioner is designed to cool medium-sized rooms up to 350 square feet, making it a good fit for bedrooms, living rooms, or apartments. It operates at a relatively quiet 53dB in low mode, which is beneficial for maintaining a peaceful environment for sleeping or working. With its 3 cooling and fan speeds, along with an Auto Cool feature, it provides flexibility in temperature control tailored to your comfort needs.

The unit includes a digital control panel and a remote control for ease of use, and its 4-way air deflection ensures effective cooling distribution throughout the room. The auto-restart function is a handy feature, automatically turning the unit back on after a power outage. Additionally, the air conditioner comes with a filter light reminder, a washable filter, and an installation kit, making maintenance and setup straightforward.

The unit's Seasonal Energy Efficiency Ratio (SEER) of 13 and the absence of an Energy Star rating indicate it may not be the most energy-efficient option available. Its compatibility with sliding windows is not explicitly mentioned, so potential buyers with such windows should verify this aspect before purchasing. At 58 pounds, it is relatively heavy, which might complicate installation for some users. Despite these drawbacks, the air conditioner offers reliable performance and useful features for cooling medium-sized rooms.

The LG 10,000 BTU Smart Window Air Conditioner is designed to cool medium-sized rooms up to around 400-450 square feet, making it a solid choice for bedrooms, living rooms, or apartments. It uses advanced Dual Inverter technology which helps it run quietly—down to about 44 dB in sleep mode—which is quieter than many window units, so it won't disturb your rest or work. This technology also makes the unit about 25% more energy efficient than standard Energy Star requirements, which can help reduce your electricity bills over time. The unit operates at a Seasonal Energy Efficiency Ratio (SEER) of 15, reflecting good energy use for its class. It runs on standard 115V power and fits most sliding windows, with included window curtain panels to help seal around the unit.

One standout feature is its smart capability: it connects to WiFi and works with LG ThinQ app, Amazon Alexa, and Google Assistant, so you can control temperature and settings remotely or by voice commands. There are 4 fan and cooling speeds, including an Auto Cool mode, giving you flexibility to tailor comfort levels. Noise level during normal operation is around 58 dB, which is average for window ACs but could be noticeable if you prefer very quiet environments. The unit also includes a dehumidifier function and filter light reminders to maintain air quality and ease of use.

The unit includes a 1-year warranty, which is somewhat limited compared to some competitors, and at 63 pounds, installation might require two people. This LG air conditioner combines strong cooling power, energy efficiency, quiet operation, and smart home features, making it a practical choice for anyone wanting a modern, versatile window AC for sliding windows in medium-sized spaces.