COSTWAY Portable ACs: Which BTU Fits Your Room?

The COSTWAY Portable Air Conditioner at 8,000 BTU is rated for spaces up to 230 square feet, which makes it the natural fit for a bedroom setup or a small streaming corner. It is a 4-in-1 unit with cooling, drying, ventilation and sleep modes plus two fan speeds, and you control it from the panel or a remote that works up to 16.5 feet away. The listing describes louvers that oscillate 140 degrees vertically and 50 degrees horizontally.

Sleep mode raises the setpoint by 1.8°F per hour, and there is a 1-24 hour timer. Safety features include a child lock and overload protection, plus auto defrost and a self-evaporating system. The spec sheet lists 53 dB. Note the listing contradicts itself on refrigerant: the features say R410A while the specs say R-32. It includes a window kit, four casters and a built-in handle. Choose it for small rooms; if your space is closer to 300 square feet or has a lot of hardware throwing off heat, the 9,000 or 10,000 BTU models are safer choices.

• 8,000 BTU for up to 230 sq ft
• Cool, dry, fan and sleep modes
• Child lock and overload protection
• Window venting kit included

This COSTWAY Portable Air Conditioner in white and black steps up to 10,000 BTU for rooms up to 350 square feet. That makes it a good match for a dedicated game room where a PC, consoles and a big display add heat on top of summer weather. Modes are fan, cool, dry and sleep, with two fan speeds and a 61°F to 90°F range. The listing specifies a 51 pint dehumidifying capacity.

It has a touch panel with an LED display and a remote with a 16.5 foot range. Drainage can be manual or continuous, and there is auto defrost. Sleep mode dims the lights, raises the temperature by 1.8°F per hour and shuts off after 12 hours. The window kit fits openings from 25.5 to 47 inches, and the filter is removable and washable. Noise is listed at 55 dB or less, and the vertical swing is manual at 90 degrees. It measures 12 by 12.5 by 27.5 inches. Choose it over the grey 10,000 BTU model if you want the continuous drain option and the lower listed noise level.

The COSTWAY Portable Air Conditioners listing in grey is also rated at 10,000 BTU for up to 350 square feet. Its feature list mirrors the 8,000 BTU model: 4-in-1 operation with ventilation, drying, cooling and sleep modes, two fan speeds, louvers that the listing says oscillate 140 degrees vertically and 50 degrees horizontally, a remote with a 16.5 foot range and a 1-24 hour timer.

It includes a child lock, overload protection, auto defrost and a self-evaporating system, and the specs list R-410A refrigerant and a 960 watt draw. The listed noise is 60 dB, the highest among the floor units here, which is worth weighing if it will sit near your bed or microphone. It suits a larger living area where noise matters less than coverage. If quiet matters more, the white and black 10,000 BTU unit lists a lower figure. Readers comparing across brands can browse our look at a premium portable air conditioner alternative.

This COSTWAY Portable Air Conditioner sits between the others at 9,000 BTU in its title, rated for rooms up to 280 square feet with a 61°F to 88°F range. Its spec sheet lists cooling power as 874 watts rather than BTU, so rely on the title figure for room sizing. The louver adjusts manually 115 degrees vertically and 96 degrees horizontally, and it has fan, cool, dry and sleep modes with two wind speeds.

It lists 50 to 53 dB of operating noise, the quietest range among the floor units, which makes it appealing for bedrooms and recording setups. Drainage is manual or continuous, with a 2 foot drain hose included, and overflow protection shuts it off when the tank is full. The window kit fits sliding windows from 25.5 to 47 inches, and the filter washes under water. Choose it for a mid-size room where noise matters; for more than 280 square feet, move up to a 10,000 BTU unit.

• 9,000 BTU for up to 280 sq ft
• Built-in dehumidifier and continuous drainage
• 50-53 dB listed noise

Best for
RVs, campers and truck sleepers

The COSTWAY RV Window Air Conditioner is a different kind of product. It is a 6,500 BTU window unit designed for RVs, caravans, truck sleepers, kiosks and portacabins, covering up to 120 square feet with 118 CFM of airflow. It is ETL certified and supports five installation positions for windows 1 to 5.7 inches thick.

It is the only COSTWAY here with Wi-Fi app control and voice control through Alexa and Google Home. Modes are cooling, fan, dehumidification and sleep, with a 60°F to 80°F range, swing on or off and two fan speeds. It runs at about 50 dB and draws 650 watts. The listing gives a 53 pound weight and dimensions of 17 by 14 by 7 inches. It is meant for campers, not for a house room; for a bedroom or game room, pick one of the floor units above.