# Defective unit?

**URL:** <https://community.anovaculinary.com/t/defective-unit/675>\
**Category:** Anova Support\
**Created:** [December 19, 2015, 4:46pm UTC](https://community.anovaculinary.com/t/defective-unit/675 "2015-12-19T16:46:54Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bpotter](https://avatars.discourse-cdn.com/v4/letter/b/f05b48/32.png) [@bpotter](https://community.anovaculinary.com/u/bpotter)\
**Post date:** [December 19, 2015, 4:46pm UTC](https://community.anovaculinary.com/t/defective-unit/675/1 "2015-12-19T16:46:54Z")

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I just got a Anova Precision Cooker WIFI as a gift last night, although after some initial use, I am curious if I have a defective unit. This is my first sous vide device, so I am not entirely sure if there is some adjustments to my method that need to be done, or if the unit needs replacement.

  

I started with 10L of water at around room temperature in a clear polycarbonate container. I covered the top in saran wrap. It took 2 hours for the water get to a temperature of 75C. During the heating process, I could see a slow increase temperature, and then it would drop a couple of degrees, go back up, drop go back up and so forth.

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**Author:** ![bpotter](https://avatars.discourse-cdn.com/v4/letter/b/f05b48/32.png) [@bpotter](https://community.anovaculinary.com/u/bpotter)\
**Post date:** [December 20, 2015, 4:34am UTC](https://community.anovaculinary.com/t/defective-unit/675/2 "2015-12-20T04:34:47Z")

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Did a little more experimenting and I think the poor performance might have been from the outlet it was plugged into. Tried a different outlet in the kitchen and performance seems to be better and without all the dips. Will experiment with it a bit more to see if that is the case.