One of our customers (a talented engineer from Intel, of course) made his own fermenter chiller heater for about $200.
Using low cost peltier chips, a heating blanket, temperature controller, insulation, 2 blocks of aluminum, and other sundry parts, he now has a fully automated temperature controlled fermenter for a great cost.
On top of that, he was generous enough to document his project with step by step photos and put it all into a document for all to use. Thanks Rob!

[...] is a complete step by step, how to do it, taken from a link on the Stout kettles and tanks website http://conical-fermenter.com/info-discussions/build-your-own-automated-fermenter-chillerheater-for-2... __________________ [...]