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So yes a clear icemaker is the way to go as it continually makes fresh clear ice always melting the bottom ice away and draining out the impurities to make the ice clear. The unit has to drain , if you can gravity drain it then it must be under the unit or near it on a slope so the water (hence gravity) will flow away from the unit. My experience in basement set ups is the pump is necessary as it will pump it longer distances and up to things like a small sink trap nearby. All clear icemakers are noisy so know that in advance however many brands have a mode that will pause the harvesting of the ice so it will run less. Say your about to watch a movie you put it in this mode and it will pause ice production allowing for up to 24 hours of no noise. Pump will run if needed to drain away excess melted ice. I had a sub zero in my old house and used this feature a lot as a TV room was nearby..
From subs website
UC-15I Undercounter Ice Makers have an auto delay feature to delay ice production for 24 hours.
The ice maker does not make ice when the unit is in Delay or Repeat Delay mode.
Ice melts inside the bin during the delay. How much ice is dependent on the ambient temperature and the amount of ice in the bin.
Setting a repeat delay allows for targeted ice production during the times when ice is most used every day. The Repeat Delay stays set until the Repeat Delay is disabled, or a power failure occurs.
After power failure, Repeat Delay turns off so it must be reactivated.
If the ice maker is in the middle of a cycle, it may be possible to hear one batch of ice drop after repeat delay is turned on.
Repeat Delay is only available starting with the following serial numbers:
