@Calgal2too
I ordered QVC's 3 in 1 Delonghi 8300 BTU for 700 square feet, basically the same model as the 4 in 1 without the heater. Using it a little over a week as helper in the bedroom and master bath (about 425 sq feet) because they are the only rooms the central AC doesn't cool well.
Surprisingly, very cold air and powerful airflow. Cools the room very quickly. Overall it works very well.
Set up...well, with my 29 inch double hung window the panel insert did not fit properly. The window is exactly 29 inches. It was recommended buyer cut out the hole to make the hose connection fit. The smaller panel used with one of the larger ones was too short.
I had a terrible time screwing on the connections to the hose. They wouldn't catch, but got them together even though they don't fit well, but at least they don't leak. It was similar to screwing a lid onto a jar crooked. Couldn't straighten out the connections. Very poor design. Maybe, I was doing something wrong, but received it Friday evening. Instruction booklet no help. Delonghi customer service was closed until Monday. Looked on Youtube how to do it, but none of the 4 videos showed that. So decided to figure it out myself.
Without those problems, installation would have been very easy.
It is loud even with only the fan running.
I was looking for an AC that had an off and on feature. The fan turns off when the compressor shuts off, turns on again when the compressor comes back on. Asked if this model had that feature under Questions. A Delonghi representative answering questions at the time said it did. But, the one I ordered doesn't. The fan runs all the time. At first I thought it was defective and maybe it is. I would not have purchased it if it this model doesn't have this feature. My little window AC had that feature and it was wonderful because you're not listening to a fan all the time.
I haven't tried the dehumidifier.
I will be returning because of the off and on fan feature. Not looking forward to getting this large 70 lb AC back in the box. Other than those problems, it's excellent at cooling.