Worked well except... only problem was extra hot spell where it needed to run for 3 days straight - afterwards the electronics were messed up for days.  It would change settings on its own and go to super max cool and would not turn off - I had to unplug the machine to have it stop.  Changing back to normal settings wouldn't work, as it would reset itself again.   After sitting & not running for 2 days the problems cleared up and did not return for rest of season where it ran great.  Will see how it works next year.  YMMV  Would give higher rating but for control issue. [This review was collected as part of a promotion.]