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

The LG 7,600 BTU Window Air Conditioner with Heat is a solid choice for cooling and heating rooms up to about 330 square feet, such as bedrooms or small living spaces. Its cooling capacity is suitable for medium-sized rooms, and it offers two fan speeds, allowing you to customize airflow. One convenient feature is the supplemental heating option, which can keep your space warm during cooler days, making this unit usable year-round. The SEER rating of 11.3 indicates decent energy efficiency, helping to keep power bills reasonable. Noise-wise, it operates quietly at around 50 decibels on low speed, which is roughly the level of a quiet conversation, so it won’t disturb sleep or work.

Installation is designed for sliding windows, using a slide in-out chassis that simplifies setup. Additional perks include a remote control, a 24-hour timer, auto-restart after power outages, and a filter light reminder to help maintain the unit. However, the unit weighs 69 pounds, which might make handling a bit challenging during installation. Its 1-year warranty covers parts and labor but is relatively basic compared to some competitors.

This air conditioner does not have a high energy star rating, but it balances performance and features well for its price. It is particularly suitable for those who want a reliable cooling and heating solution for medium-sized sliding windows, with low noise and easy controls.

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 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.