I bought this unit to supplement my central air conditioning which doesn't reach the upper floors very well. The device was easy to set up. The Android app worked great and had no trouble connecting to the wifi. I've used it for the last few nights when the daytime temp was 90 degrees and it was chilly at the top to a comfortable 75 degrees. I believe the noise corresponds to an AC window unit. Since my house has central air conditioning and it is turned off during the day, I have found that the air conditioning system dehumidifies the entire house and the unit does not collect much water. I had to cut off part of the adjustable window slider as my windows are not standard size, but they were easy to trim. Overall very happy with the purchase.
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