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 BLACK+DECKER Portable Air Conditioner is a solid choice for cooling small rooms up to about 150 square feet, such as dorm rooms, offices, or bedrooms. Its 8,000 BTU cooling capacity, which is roughly 1464 watts, efficiently cools spaces of this size without using too much electricity, making it fairly energy-friendly for personal use. The unit also stands out for combining three functions—air conditioning, dehumidifying, and fan mode—giving you versatile options for comfort beyond just cooling. With a noise level of around 53 decibels, it operates at a moderate sound level, similar to a quiet conversation, so it shouldn't be too distracting during use. The included full-function remote control is very convenient, allowing you to adjust settings without getting up.

Installation is straightforward with the supplied window kit that fits most double-hung or sliding windows; however, it requires venting through a window with the exhaust hose, which is standard for portable ACs but might not suit every room setup. The self-evaporating system helps reduce the hassle of emptying water, which is a nice touch, though keeping the filter clean is still necessary for best performance. Although the product’s specifications suggest best use for around 150 square feet, some advertising states up to 350 square feet, so it may struggle to cool larger spaces effectively.

The unit is somewhat bulky and weighs over 50 pounds, so it’s portable but may require some effort to move. This model offers a good balance of functionality and ease of use for people looking to cool and control humidity in small to medium rooms without complex installation.

The DOMANKI 14,000 BTU Portable Air Conditioner is a strong choice for cooling large rooms up to 700 sq. ft., making it ideal for spaces like campervans, offices, or large bedrooms. One of its notable strengths is the powerful and efficient cooling it provides, thanks to an upgraded compressor system and the eco-friendly R32 refrigerant. This unit is also energy-efficient, tailored for operating within a range of 61°F to 88°F, which helps in saving on electricity bills.

The 3-in-1 functionality stands out, combining cooling, dehumidification, and fan modes for versatile use. Users will appreciate the multiple smart functions, including auto swing, a 24-hour timer, sleep mode, and child lock, making it user-friendly even for those who aren't familiar with smart appliances. The included remote control enhances convenience, allowing adjustments from a distance of up to 28 feet.

At a noise level of 52 dB during regular operation and under 48 dB in sleep mode, it ensures a quiet environment conducive to sleep or work. On the downside, the unit is relatively heavy at 73.8 pounds, which might make it challenging for some users to move around despite its caster wheels. Additionally, while the basic filter is easy to remove and wash, it might not be sufficient for those wanting advanced air purification. The included installation kit makes setup straightforward for most standard-sized vertical and horizontal sliding windows, but compatibility issues could arise with non-standard window sizes. This portable air conditioner excels in cooling performance and smart features, though its weight and basic filter might be drawbacks for some users.