Product review (5 stars): In hard water condition don't forget to clean and descale
This unit is a little work horse.  My piece of junk under counter Whirlpool died after 2 months, while waiting for warranty repairs (took 4 months) I needed a back up for AZ summer heat.. The Luma got to me in two days, ran 24/7 for months without a glitch.  It is now hot again, the undercounted slows down to nothing so I pulled out the Luma, Had my first batch of 99% clear cubes in less than 20 minutes. When I us distilled water, the cubes are 100% clear. I am on well water when loads of minerals which does impact the cube clarity.  This unit was a good purchase.