Fermintation temps. - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Brew Science > Fermintation temps.

Reply
 
Thread Tools
Old 05-08-2012, 12:04 AM   #1
flexfit115
Recipes 
 
Jan 2012
Posts: 42


It seems to me that every time I brew the thermometers on my bucket seem to say that my brew is 4 or so degrees higher than ambient temp in my house. Does fermentation cause temp to rise in the bucket or are the thermometers wrong? Or maybe I'm crazy?

 
Reply With Quote
Old 05-08-2012, 12:09 AM   #2
JLem
 
JLem's Avatar
Recipes 
 
Jan 2009
Attleboro, MA
Posts: 3,637
Liked 178 Times on 154 Posts


You're not crazy and the thermometers are not wrong (at least not relatively so). Fermentation is an exothermic process so you can expect your beer will be 5-10 degrees F higher than ambient.
__________________
My Hombrewing Blog

My Beer Cellar

 
Reply With Quote
Old 05-08-2012, 12:15 AM   #3
flexfit115
Recipes 
 
Jan 2012
Posts: 42

So do I try to cool it back to the proper temp per my yeast instructions, or is the calculated in the the yeast instructions?

 
Reply With Quote
Old 05-08-2012, 12:18 AM   #4
marcopolo
Recipes 
 
Jun 2008
Berthoud, Colorado
Posts: 70
Liked 5 Times on 5 Posts


Relax. Don't worry. Have a homebrew...

 
Reply With Quote
Old 05-08-2012, 01:05 AM   #5
JLem
 
JLem's Avatar
Recipes 
 
Jan 2009
Attleboro, MA
Posts: 3,637
Liked 178 Times on 154 Posts


Quote:
Originally Posted by flexfit115 View Post
So do I try to cool it back to the proper temp per my yeast instructions, or is the calculated in the the yeast instructions?
Most of the time it is the fermentation temperature that is listed, so you should cool it down. For example, if I want a fermentation temp of 68°F, my ambient needs to be 60-62°F.

What are you making, what yeast are you using, and what is your ambient temp?
__________________
My Hombrewing Blog

My Beer Cellar

 
Reply With Quote
Old 05-08-2012, 01:20 AM   #6
flexfit115
Recipes 
 
Jan 2012
Posts: 42

That's what I thought, but brewing a Belgian Dubble, and wlp550 which is good up to 78 degrees according to their website. But I'm at about 77 degrees and ambient is 73 in my house. Thanks.

 
Reply With Quote
Old 05-09-2012, 02:45 AM   #7
flexfit115
Recipes 
 
Jan 2012
Posts: 42

It dropped right down to ambient temp after about 24 hrs. Thanks all!

 
Reply With Quote
Reply
Thread Tools



Forum Jump