Ideas like the DIY Bucket + Heating lamp can help here.. With their newer model, the BrewJacket now cools and heats; It has its own built in temp controller.
Drill Your Own PET Carboy. If you already have a PET carboy that you would like to use with Immersion, just follow the steps in this video and pick up a Blowoff .
Immersion Pro's large temperature range allows you to brew any style regardless of your ambient temperature. Warm fermenting saisons and cool fermenting .
. the moment. When I win the BrewUnited competition I'll let you guys know.. .. that's true – if you can diy you'll save a lot of money generally.