Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Chest freezer fermentation chamber
LinkBack Thread Tools
Old 08-20-2012, 09:04 PM   #11
Feedback Score: 0 reviews
Join Date: Aug 2012
Location: Eastvale, California
Posts: 19
Liked 3 Times on 3 Posts


Hi all, in my setup I hesitate to even tape the probe to the carboy. This is because the temp of the beer is going to lag behind the air temp in the freezer. So if you want to hit 70F in the carboy for a German Hef, if you have the probe attached to the carboy, the air temp in the freezer could drop as low as 65F or lower before the carboy cools down. Then, the air will still be cold and the carboy will continue to cool beyond where you want it. The best approach is to try to control air temp inside the freezer and either use a thermal well or a temp tape (fish tank thermometer) to find out what the differential is between your beer in the carboy and the air temp. Then adjust the set point accordingly. This will keep your beer from over heating or over cooling after freezer goes off. For this method, probe placement is important. If you have it too high in the air over the floor of the freezer, the freezer will be too cold. The set point will turn off the freezer and the walls will remain very cold and continue cooling the air, which will then continue cooling your beer. But, if you put the probe too close to the floor of the freezer, then the controller will turn the freezer off before the air has a chance to cool down. I set my probe about 2 inches from the floor. If I have my set point at 68, my beer is about 70ish. Also, the air at the top of the freezer is 70 and the air at the bottom of the freezer is 66, leaving the air in the middle the perfect 68. In live in SoCal where right now we're having over 100 temps, the freezer only cycles a couple times an hour.

Calman2k is offline
Reply With Quote Quick reply to this message
Old 08-20-2012, 09:13 PM   #12
Feedback Score: 0 reviews
bad67z's Avatar
Join Date: Feb 2009
Location: Columbus, Ohio
Posts: 1,886
Liked 108 Times on 76 Posts
Likes Given: 26


Calman2k, You may be over analyzing this, the process your describing is used successfully by quite a few of us.

bad67z is offline
Reply With Quote Quick reply to this message

Quick Reply
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fermentation Chamber - separate from but powered by a chest freezer BobTheFourth Fermentation & Yeast 13 08-26-2012 02:58 AM
Chest Freezer Fermenation Chamber Venilation Stoner Fermentation & Yeast 16 07-18-2012 12:33 PM
Chest freezer fermentation chamber for 2+ carboys julian81 Fermentation & Yeast 18 07-03-2012 05:31 AM
Fermentation Chamber - Chest or Upright Freezer stvcoburn Fermentation & Yeast 16 04-09-2012 04:29 AM
Chest freezer fermenation chamber and fresh air flow worldzfree Fermentation & Yeast 2 12-16-2010 11:29 PM

Newest Threads