BLACK+DECKER prints both numbers that matter on a portable unit: 10,000 BTU on the older ASHRAE scale and 5,550 BTU on the DOE scale. That second figure is the honest one, the output you actually get at the room after losses to the exhaust hose and warm air leaking back in, and it explains why the 450 sq ft claim here is realistic rather than a stretch.
A three-in-one layout covers cooling, dehumidifying and fan, with a Follow Me remote that reads the temperature where the remote sits rather than at the unit. Its 15.3 by 14 by 24.8 inch footprint is small enough for a bedroom corner, and the price tier is lower-middle among the six, which makes it a straightforward value for a single room.
Mind the venting. A single-hose portable pulls room air across the condenser and sends it outside, so doors and windows leak makeup air back in. Seal the window kit with foam strip and keep the exhaust hose short and straight. In dry mode the machine still needs the hose, since compressor heat has to go somewhere.
What works
- Lists both ASHRAE and DOE cooling numbers
- Compact footprint for a bedroom corner
- Follow Me remote senses temperature at your seat
- Lower-middle price tier for the capability
Watch out for
- Single hose draws warm makeup air into the room
- No heating mode like the SereneLife units
- Dry mode still needs the exhaust hose connected
Spec sheet
- Cooling rating
- 10,000 BTU ASHRAE, 5,550 BTU DOE
- Room size claim
- Up to 450 sq ft
- Modes
- Cool, dehumidify, fan
- Size
- 15.3 x 14 x 24.8 inches
- Remote
- Follow Me function






