How do you control fermentation temps? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > How do you control fermentation temps?

Thread Tools
Old 08-15-2011, 12:30 AM   #1
Vongo's Avatar
Jan 2011
Baltimore, MD
Posts: 340

I use water in a igloo cube cooler with an ice pack. Thinking of getting a small chest freezer.
"Brewers enjoy working to make beer as much as drinking beer instead of working."
-Harold Rudolph

Reply With Quote
Old 08-15-2011, 12:40 AM   #2
Jun 2010
Edmonton Ky
Posts: 1,335
Liked 16 Times on 16 Posts

For the moment I leave the fermenter next to the AC vent. My beer fridge ended up being my food fridge and havent gotten around to replacing it.
Back Nine Brew&Wine
Life don't get better than a beer and a pepper.
What I am brewing is now a mystery

Reply With Quote
Old 08-15-2011, 12:41 AM   #3
Jaybird's Avatar
Jul 2006
Posts: 7,877
Liked 1082 Times on 757 Posts

I use an extra fridge with temp controller. Fits 2, 6.8 gallon buckets.
The new SPEIDEL gasket is on the way! PM for details
The new Hop back and RANDAll kits are READY for order!

We are your False Bottom headquarters. Need a False Bottom? let me know.

Nor Cal Brewing Solutions, Reddings local homebrew store and like us on Facebook Facebook only promos too
Smoke Cigars?

*Member: The HBT Sweaty Fat Guy Cigar Club

Reply With Quote
Old 08-15-2011, 01:19 AM   #4
Kaz's Avatar
May 2010
Amish Country, PA
Posts: 1,069
Liked 22 Times on 20 Posts

I built an insulated box around an old dorm fridge, it will hold 2-4 fermentors or corny kegs. Haven't tried to get to lager temps over the summer, not sure it could do it. Then I use a 2 stage Love controller with a heat wrap inside the chamber, I can hold a carboy to within .5 degree if I wanted too.
Draft 1:
Draft 2:
Draft 3: Belgian Dubbel

Primary 1: German Hefe
Primary 2:

Reply With Quote
Old 08-15-2011, 01:19 AM   #5
Mar 2011
Summerville, SC
Posts: 155
Liked 5 Times on 5 Posts

swamp cooler (which i hate by the way) but moving to a small chest freezer after my stand is built

Reply With Quote
Old 08-15-2011, 01:51 AM   #6
Mar 2011
Fraser, MI
Posts: 531
Liked 12 Times on 12 Posts

Chest freezer.
It will change your life. My beers went from Meh to

Reply With Quote
Old 08-15-2011, 01:57 AM   #7
kh54s10's Avatar
Aug 2011
Tiverton, Rhode Island
Posts: 11,637
Liked 1862 Times on 1525 Posts

I have a large Sterilite storage box. It holds 2 carboys. about 5 inches of water in the bottom and the jugs from my LME and 2 last about 18 hours before I switch them out. I am able to keep within a few degrees. Chest freezer with a Johnson controller are next on the list then AG.

Reply With Quote
Old 08-15-2011, 01:58 AM   #8
Brewtus Maximus
Aschecte's Avatar
Feb 2011
Florida, NY
Posts: 1,692
Liked 65 Times on 61 Posts

depends what I want to achieve I use an old upright refrigerator if I want to do Ales in the lower 60's I use a chest freezer for lager's in the 35-55 range I also use the chest freezer for Keg storage. Believe it or not I have very good results with the wet t-shirt trick if I only need to drop down 2-3 degrees or so and finally I have a brew belt from northern brewer to raise temps. All the above are controled either with Love controls or Johnson A-419 controls.
Funky Onion Brewing est.2010
Primary-Turbid mashed Lambic
Primary-Flanders Red
Secondary-Burley whiner American barleywine
Primary-A dark German lager or a Hoppy Munich Helles

Reply With Quote
Old 08-15-2011, 02:23 AM   #9
rexbanner's Avatar
Nov 2008
Posts: 1,382
Liked 98 Times on 70 Posts

The problem I have with a chest freezer is that if my beer rises above the temperature I set on my controller, the freezer will kick on until the beer goes back down below the temperature, but then afterwards the walls are still cold and continue to bring the beer down several more degrees.

This isn't a problem if you keep the probe outside the beer. The problem is, I need to keep the probe inside a thermowell because I need to know the actual temperature of the beer since I sometimes need to warm it. This is only really necessary for Belgian strong ales, which I've been making a lot lately. I keep the beer cool to start, and then warm up the freezer space with a pot of hot water until I hit desired temps. If the beer suddenly cools several degrees, it can knock the yeast out.

That's why I prefer my old system of a wall AC unit and foam insulation chamber. It kicks on, hits the desired temp, and then stops.
Peep my nanobrewery:

Crooked Run Brewing: Seek Truth, Cherish Nature

Makers of Red Kolsch, Storm, and Shadow of Truth

Reply With Quote
Old 08-15-2011, 04:27 AM   #10
Jun 2011
Posts: 387
Liked 12 Times on 11 Posts

Right now swamp cooler. Soon an old fridge with a temp controller. I have no problem maintaining a constant temp + or - 1F with the cooler.
On Deck: Cream Ale and Blue Moon clone for MIL

Primary: Hopped Up Brown

Bottled: Litehaus Wheat, Orange APA, Rauchbier, Willy's Cream Stout

Kegged: Tank 7 Clone renamed "Le Ferme" (dryhopped cascade, sorachi), Caramel Amber Ale, Trout Bum APA, 3 Dogs APA

Gallons Brewed Since June: 53.5
I seriously cannot imagine a day or life without beer!

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fermentation Temps? jdauria Fermentation & Yeast 12 03-03-2013 09:59 PM
Fermentation control steps (cold crash, temps, time, etc) wbtenor Fermentation & Yeast 16 12-12-2011 04:52 AM
Lost control of my Fermentation Temps! Vongo Fermentation & Yeast 8 07-22-2011 03:01 AM
Low fermentation temps - again SkiSoloII Fermentation & Yeast 6 12-01-2010 04:16 PM
How long to control temps illinifan Fermentation & Yeast 3 08-19-2010 04:55 AM

Forum Jump