A:AnswerHi there!
You can purchase the replacement parts on https://encompass.com/. Just enter the model number of the product on the search bar or you may also open the link below.
https://encompass.com/model/ISGNSRTM18SS2
Insignia Support
Angela
www.insigniaproducts.com/support
A:AnswerIt should already be adjusting the temperature. I don't hear a single sound from mine and it's set at the highest as well. I like my ice crystal clear and dry so I don't have to use an ice pick!