Just got my first anova! I have the precision cooker wifi version.
I'm on my second cook now. I want to quickly make sure that what I'm experiencing for noise is normal. When nothing is in the pot, it makes quite a lot of noise. I figured mostly just sound of water circulating. Sounds like a loud kettle. After I put something in the pot, it goes down to a quieter humming. This is repeatable: pull out the bag, noise is loud, put in the bag, noise is quiet. Is this normal? Should I be concerned?