So what you're telling me is one temp controller won't keep the freezer at a constant 62 degrees? You're keeping yours in your garage by the looks of it, though, so I can understand the heating part. But if my freezer is inside my house, why wouldn't one temp controller do the trick?As long as your house is always above 62F (or whatever temp you want to keep it), you only need one temperature controller. But some of these crazy people let their houses get down into the 50s for the winter.
Yeesh, thank you for easing my mind. I was having second thoughts about buying a chest freezer for temp control. Silly me. I don't let the house ever get below ale temps. I fermented many of my ales in the basement this winter and the ambient temp was somewhere around 57, which produce some nice clean beers. Fermentation was never too vigorous, but the beers turned out great and didn't over attenuate.
But as I may not have mentioned, I'm moving to a new place in August where there isn't central air and no basement. So I'll need to be taking control of my fermentation temperatures.