10 Best In Room Air Conditioner No Exhaust 2025 in the United States

The BLACK+DECKER 10,000 BTU portable air conditioner is a solid choice for cooling rooms up to about 450 square feet. It offers a decent cooling capacity that should keep small to medium rooms comfortable during hot weather. With a 5-star Energy Star rating and a SEER of 6.7, it’s relatively energy-efficient, which helps save on electricity bills compared to less efficient units. The noise level at 52 dB is moderate—not too loud but noticeable, similar to a quiet conversation, so it’s generally suitable for bedrooms or living areas if you’re sensitive to sound.

One handy feature is its 3-in-1 functionality, working as an air conditioner, dehumidifier, and fan, making it versatile for different weather conditions. The remote control and LED display add convenience, and the washable filter and auto water evaporation system reduce maintenance hassle. Its portability is enhanced by side handles and casters, so moving it around the house is easy.

While it includes a window installation kit, this unit still requires venting to the outside to work efficiently, which might limit where you place it. The cooling power is ideal for rooms up to 450 sq. ft., so larger spaces may not get adequate cooling. This makes it a practical option if you want a portable, multi-use unit with good energy efficiency and manageable noise levels.

The COOLECH 42-inch windowless portable air conditioner is designed to cool rooms up to about 300 square feet using evaporative cooling rather than traditional refrigerant-based methods. It offers a strong airflow of 1400 CFM with three speed options and four modes—including a sleep mode for quiet nights. The unit cools by converting water (with optional ice packs) into mist, lowering the air temperature by roughly 36-50°F in dry conditions. It features a large 1-gallon water tank that can run for up to 15 hours, making it suitable for extended use without constant refills.

Energy-wise, this cooler is very efficient, using only 80 watts—much less than typical air conditioners—so it’s ideal for those looking to save on electricity bills. Noise levels are modest at 50 decibels, roughly comparable to a quiet conversation, which means it won’t disturb sleep or focused activities. The product has user-friendly extras like a smart LED touch panel, remote control, a 12-hour timer, oscillation for wide air coverage, and safety features such as a non-tip base and bladeless design.

Because it is an evaporative cooler, it works best in dry climates. In humid environments, its cooling effect will be less noticeable because it relies on evaporation to cool the air. It also doesn’t fully replace a traditional air conditioner since it doesn’t lower humidity or cool as aggressively. The lack of window installation or exhaust hoses makes setup and portability easy, but this means it won't remove heat from a room the way standard AC units do. This product is a good choice if you want a quiet, energy-saving, and portable way to cool and humidify a moderate-sized room in dry conditions without the hassle of window mounting or vents. For those in humid areas or who need powerful cooling, a traditional AC might be more effective.

The BLACK+DECKER Portable Air Conditioner is a solid choice for cooling small to medium-sized rooms, up to about 450 square feet. Its 10,000 BTU cooling capacity is suitable for spaces like dorms, offices, or bedrooms, providing noticeable cooling down to 61°F on the lowest setting. It operates quietly at 52 decibels, which is about the noise level of a quiet conversation, so it won’t be disruptive during work or sleep.

Additionally, its 3-in-1 functionality—cooling, fan, and dehumidifying—adds versatility, helping reduce humidity without needing a separate device. The self-evaporating system means less hassle with water drainage, which is a user-friendly feature. Installation is straightforward, using a window adapter and hose to vent hot air outside, and it comes with a remote control and easy-to-read display for convenience.

While it is portable with wheels, the unit is fairly heavy at nearly 55 pounds, which might limit frequent moving. Its energy efficiency may be lower compared to more advanced models designed for energy savings. The unit includes a washable filter but requires regular cleaning to maintain performance. This BLACK+DECKER model serves as a practical, easy-to-use option for cooling smaller rooms with moderate noise and decent features, though those prioritizing energy efficiency or very quiet operation might consider other models.