It might be necessary with DIY, and from what I understand can be useful with low powered or non-circulating commercial devices. But the with my Anova at least (and the Nomiku and Sansaire are nearly identical to the Anova on spec sheet) its totally unnecessary. It heats large volumes quickly, consistently, and never over shoots. Without any added insulation. I tend to use warm or hot tap water at whatever temp comes out of my tap because it will heat quicker. I’m basically saving myself 10 minutes. But with these devices there isn’t really a compelling reason to try and fill it with water at the target temp. Its designed and built to do that for you.
I’m curious because if the Nomiku can’t consistently and automagically bring room temp water to the target with out overshooting. Or requires carefully pre-heated water for some other reason, that’s a pretty big short falling as compared to its two direct competitors. Both of which are $100 cheaper.
