Window Air Conditioner Units

Air Conditioner Window Units

The Window Air Conditioner Units category is built for projects that need direct, room-by-room cooling without adding ductwork or modifying an existing central system. Window A/C units mount in a double-hung or slider window opening and provide self-contained cooling for bedrooms, home offices, apartments, dorms, shops, and break rooms. They are ideal when you want targeted comfort, quick installation, and predictable power requirements.

Modern window air conditioners offer far more than basic cold air. Many models include digital thermostats, remote controls, multi-speed fans, dehumidify modes, sleep settings, and energy-saving functions. Some units add heat, inverter technology, or smart Wi-Fi connectivity so users can control temperature from a phone and trim energy use when rooms are unoccupied. In this section, you can compare BTU capacity, EER/CEER efficiency ratings, noise levels, and window size requirements to choose the right unit for each space.

• 5,000–8,000 BTU window A/C units sized for small bedrooms, dorms, and home offices.
• 9,000–12,000 BTU units for medium rooms, living areas, and studio apartments.
• 14,000 BTU and up for large rooms, open areas, and high-gain spaces with significant sun exposure.
• Energy-efficient and inverter models for lower power consumption, smoother operation, and better humidity control.
• Smart / Wi-Fi-enabled window A/Cs that integrate with apps and home automation platforms for convenient control.

When selecting a window air conditioner unit, avoid sizing by square footage alone. Consider ceiling height, insulation, window orientation, internal heat loads, and whether doors typically stay open. Check the unit’s minimum and maximum window width, sash opening height, and required sill depth so you can confirm it will install safely in the existing window without excessive shimming or modification. Use the Compare tools on this page to review BTUs, voltage, plug type, sound levels, and energy ratings side by side.

Pro tip: Before ordering a window A/C, measure the inside clear width of the window frame, sash opening height, sill depth, and distance to the nearest receptacle. Note whether the window is shaded or in full sun and if the room includes heat sources like electronics or kitchen appliances. Provide those details and we can help you choose the best-matched window air conditioner unit, mounting kit, and optional accessories for safe installation and reliable comfort.