Midea Duo 14,000 BTU(12,000 BTU SACC) High Efficiency Inverter, Quiet Portable Air Conditioner, Cools up to 550 Sq.Ft., Works with Alexa/Google Assistant, Includes Remote Control&Window Kit (Renewed)

Was worried about it being refurbished but has been absolutely amazing and for a amazing deal. Keeps are room extremely cold, it does sound like a jet taking off when it first starts but it's only a few seconds and then very quite. It doesn't take up much room and very easy to use. Haven't had to drain yet.

This keeps our 1400 sf Mobile home perfectly cool! The furthest bedroom from the centralized kitchen where we installed this unit stays the warmest, but I found if I close the doors to our extra bathroom and office (keeping the doors open to all three other bedrooms), then place a box fan at the door of the furthest bedroom, it cools down for my toddler to nap comfortably during the heat of the day. After 7 years of no air..I can’t believe we didn’t purchase this sooner!! I love this unit!! We have been in the 90s for a week and it has kept our home between 68-74 degrees F consistently. Where we live we can open our windows after dark to cool the house down again, but start the unit in the morning when the outside reaches the inside temperature, and run it at 68F all day.So, for my one irritation regarding this unit: we have windows that slide open left and right rather than up and down. The plastic window installation kit was really flimsy and the sticky foam was way too sticky…would have made a nasty mess had we stuck it in on our window casement. Thankfully my husband is semi-handy (according to him ~ I think he’s great!) and cut a board to fit the window with a hole big enough to attach the connector piece then screwed them together. We used foam board from Michael’s to insulate the piece and adhesive foam strip from Home Depot that we stuck to the board (not our window) so it’s easily removable.Again, I honestly can’t say how happy I am with this unit. I’ll try to stay up on the cleaning/maintenance and try to comment on longevity after time.

I got a moderately good "deal" on this Midea portable heat-pump, so I decided to keep it, even though it has turned out to have some serious performance flaws.Pros:• It does cool/heat (I have not tried dehumidify). I have it in a small room (~150 ft^2) so I can't vouch for its ultimate suitability for the rated capacity (550 ft^2).• The (iPhone) app works well. It shows extra information, not displayed on the machine or the remote control, such as current room and outside air temperatures.Cons:• The remote control is inscrutible. I'm trying to use it as a remote temperature sensor (to complement the machine's built-in sensor). No idea whether that feature is working or not. The display on the remote control correctly tracks the room's temperature, but there is no user feedback to indicate whether that info is making it back to the machine's "brain".• About that "brain": it is deranged! The thermostatic control of room temperature is entirely random. It will continue cooling 10°F below the setpoint in the summer and heat 10°F above the setpoint in the winter. Basically, you, yourself, must be the thermostatic controller. I'm sitting near the unit and constantly have to override (turn on/off) the unit when it goes rogue. For instance, just now (heating mode in January) the temperature setpoint was 64°F and the inside room temperature (according to both the remote control and the iPhone app) was 74°F; still, the machine decided to start-up (with a shudder) to add more heat to the room; what is it thinking! It "knows" the room temperature is already 10 degrees above the setpoint!!!• Although, the unit can be turned on and administered remotely (via web app), that would be foolhardy, as the unattended temperature swings could be wild.• The inverter motor--or, rather, its controller--doesn't work very well. When the machine reaches what it thinks is satisfactory room temperature (see comment above) it will stop the compressor, rather than throttling it back to a lower power. Then, when it needs to resume, the compressor starts up with a heavy shudder (power surge)...just like any other non-inverter A/C.• I doubt it is thermodynamically efficient, although I have no way of independently measuring/verifying. When the compressor is running, the machine sucks in room air, that is, a significant portion of the compressor loop's ingested air comes from the room interior, not from the outside vent. How do I know this? If I leave the door to the room unlatched, when the compressor turns on it pulls the door open ~4 inches. If I latch the door, I can see that the machine is sucking air into the room using a flow telltale (piece of tissue paper) under the door. It wouldn't help to place a towel under the door because the suction just pulls air into the room from elsewhere (wall/ceiling gaps, window flashing, etc.) This is a heat flow "leak" because the machine is pulling warm (in the summer) or cold (in the winter) air into the room whose temperature it is meant to control. This means it has to heat/cool the "leaked" air, in addition to the ambient air in the room. When just the fan circulating room air is running (but the compressor is off) there is not suction into the room. It is a flaw in (what should be) an entirely closed external airflow loop. A serious hit to efficiency.• One of the condensate outlets is broken on the inside. So, when I hookup a hose to the threaded output, the condensate water drips out of the bottom and onto the floor. I had to elevate the machine to put a drip pan underneath it...and empty that pan daily.I probably should have returned this unit for a full refund. But I was suckered into keeping it because it was a pretty good price for a cutting edge (heat pump) home technology. Caveat emptor!