Hi,
Was 8 below last night in CT and the water did not freeze. We have had a cold snap where the temp has not gone above 32 for about two weeks and this arrived this past Tuesday and has kept the water flowing for my girls ever since. I just wish I had found this years ago, makes taking good care of my hens much easier during the winter months. My hens had never drank from a waterer like this but I just had to poke at the nipple and let a little water into the well and they figured it right out. Well made but initially would have liked the cover fastened to keep them from getting it off but so far it hasn't been an issue. just taking this idea from
https://finalscope.com/best-heated-chicken-waterer/.
Not only does it work great but the quality, durability, ease of use and convenience make this my favorite purchase for my chicks so far!!