On sept 9 2020 I gave it 4 stars but on sept 10 2020 I  changed it to 1 star. Returned from overnight  business trip and it isn’t working and registered 78 degrees.  Disappointing to say the least. Jan 2021 update:  The manufacturer sent me a replacement unit which has worked well since it arrived in late September 2020.  I installed both units according to the instruction.  The refrigerator must acclimate for 24 hours before you plug it in which I did.  Second time was the charm.  I'm happy with the product now and have changed my rating to 3 stars because of having to remove the original unit (they didn't want it back) and arrange for a replacement.  Some big box stores sell this model so you may want to buy local so your don't have to recycle a defective one.