A window air conditioner is the fastest path to cooling a room without a full HVAC installation. Modern units are quieter, more efficient, and easier to install than models from a decade ago. The five picks below span compact 5,000 BTU bedroom units through large-room 14,000 BTU workhorses, covering different budgets and installation types.
| Product | Best For | Rating |
|---|---|---|
| LG LW8017ERSM | Bedrooms, smart home | 4.8/5 |
| Frigidaire FHWW083WBE | Easy install, 8,000 BTU | 4.7/5 |
| GE Profile PHC08LY | Quiet operation, inverter | 4.8/5 |
| hOmeLabs 5,000 BTU | Small rooms, budget | 4.4/5 |
| Midea U-Shaped MAW14S1BWT | Large rooms, 14,000 BTU | 4.7/5 |
LG LW8017ERSM — Best Smart Window AC
LG’s 8,000 BTU LW8017ERSM earns its top spot with smart home integration via ThinQ, allowing voice control through Google Assistant and Amazon Alexa. The app provides scheduling, temperature monitoring, and energy usage tracking from anywhere. The unit covers rooms up to 340 square feet and earns ENERGY STAR certification. The three cooling speeds and auto mode handle quiet nighttime operation through peak afternoon heat. Installation follows the standard bracket-and-accordion-side method. At just over 50 dB on the lowest fan setting, it is quiet enough for bedroom use. A complete package for anyone who wants appliance integration without paying a premium for a portable or mini-split unit.
Frigidaire FHWW083WBE — Best Easy-Install Pick
Frigidaire’s EasylInstall design sets this unit apart for renters and apartment dwellers who install and remove their AC each season. The window-fit installation requires no drilling, no tools, and no permanent modifications to the window frame. The 8,000 BTU output handles rooms up to 350 square feet. Wi-Fi connectivity and the Frigidaire app bring scheduling and remote control. The unit auto-restarts after a power outage, which prevents a hot room on return from a trip. The side accordion panels seal tightly, which reduces drafts common in some competing designs. A strong choice for anyone who dreads the annual installation and removal process.
GE Profile PHC08LY — Quietest Inverter Option
GE Profile’s inverter compressor sets this unit apart from conventional on/off designs. The inverter adjusts compressor speed in real time to maintain target temperature, which produces dramatically less noise and uses less electricity during steady-state cooling. Measured noise floor is around 43 dB, which is quieter than a library. The 8,200 BTU output covers up to 350 square feet. ENERGY STAR Most Efficient certification reflects the efficiency gains from the inverter design. The built-in Wi-Fi connects to the SmartHQ app for remote control and scheduling. Higher price than conventional units, but the quiet operation and lower electricity bill offset that premium over a multi-season ownership period.
hOmeLabs 5,000 BTU — Best Budget Small Room Pick
For rooms under 150 square feet, the hOmeLabs 5,000 BTU unit delivers basic cooling at a very low entry price. Two cooling speeds and mechanical rotary controls keep operation straightforward. The removable and washable filter reduces long-term maintenance cost. The unit fits standard double-hung windows and includes foam and bracket hardware for installation. There is no smart connectivity or programmable thermostat, which keeps the interface simple for users who just want a button to press. Energy consumption is modest given the small output. Best suited for a small bedroom, studio apartment corner, or home office that gets uncomfortably warm during summer afternoons.
Midea U-Shaped MAW14S1BWT — Best for Large Rooms
The Midea U-Shaped design is genuinely different from other window units. The U-frame allows the window to close around it, reducing the noise that passes through accordion side panels in conventional designs. The 14,000 BTU output handles spaces up to 700 square feet. An inverter compressor provides efficiency and quiet operation comparable to the GE Profile at higher capacity. The dedicated app provides scheduling and control. Installation is more involved than a standard unit due to the unique frame design, but Midea includes detailed video instructions. The noise reduction from the closed-window design is measurable and appreciated in bedrooms and home offices where street or outdoor noise is a concern alongside heat.
How to Choose a Window Air Conditioner
Start with BTU: calculate your room area in square feet and multiply by 20 for a baseline estimate. Adjust upward for west-facing rooms, high ceilings, or a kitchen setting. Check your window type: most units fit standard double-hung windows; casement windows require a different product category. For bedrooms, prioritize units under 50 dB and consider inverter models for whisper-quiet overnight operation. ENERGY STAR certification is worth the small price premium if the unit will run more than four hours daily through a long summer. Smart connectivity adds real value for households that want remote scheduling from a phone.
For more climate control picks, see our best portable air conditioners and best ceiling fans guides. See our methodology for how we evaluate home appliances.
Frequently asked questions
How do I know what BTU rating I need for my room?+
A general guideline is 20 BTU per square foot of room space. A 150-square-foot bedroom needs about 5,000 BTU; a 350-square-foot living room needs around 8,000 BTU; a 450-square-foot open space needs 10,000 BTU or more. Rooms with high ceilings, large windows facing west or south, or heavy occupancy may need an additional 10% capacity above the baseline estimate.
Are window air conditioners energy efficient?+
Modern window ACs with ENERGY STAR certification are significantly more efficient than older units. Look for a high EER (Energy Efficiency Ratio) or CEER (Combined Energy Efficiency Ratio) rating: 12 or above is considered efficient. Inverter-based models adjust compressor speed dynamically, using less electricity than on/off compressor designs once the room reaches the target temperature.