I ended up installing a HERMS system. When I direct fired it felt like there was always a lag between when I turned the flame off and what the final temperature would end up at. I couldn't keep the temperatures I wanted.
Originally Posted by lakedawgs
I would insulate personally. Before I went to a cooler/stainless braid setup, I used to wrap my Sanke in a furniture blanket. Rarely would the temp drop more than a degree, two max, over an hour mash.
I wish this was my experience. I have always recirculated just for efficiency purposes and found my temperature would drop quite quickly. Now I don't have that problem, but I did spend a few hundred dollars to remedy.