Johnson Temp Controls - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Johnson Temp Controls

Thread Tools
Old 04-07-2009, 08:58 PM   #1
Mar 2009
Dallas, TX
Posts: 1,112
Liked 35 Times on 28 Posts

I was wondering if the analog or digital temp control was better? Also, where does the temperature sensor cord go on the fridge?

For the analog do you have to weld it or what?

Reply With Quote
Old 04-08-2009, 12:13 AM   #2
lowlife's Avatar
Jan 2009
Posts: 654
Liked 11 Times on 8 Posts

I like the digital one. I got mine a419 off ebay for a lot cheaper than homebrew stores have them (unwired). They both just have a temp probe that you stick in the keezer. It just kind of dangles there =). I just lift the lid and stick it in the back.

Reply With Quote
Old 04-08-2009, 02:41 AM   #3
Mar 2009
Eau Claire WI
Posts: 73

Go with digital temp control.
Temp Differential on Digital is 1F on Analog is 4F.
Na Zdravie

On Tap:
Bohemian Dark Beer

Bohemian Pilsner

In Fermenter:
Bohemian Pilsner

Reply With Quote
Old 04-08-2009, 03:14 AM   #4
AFAJ Brew Guy
AFAJ Brew Guy's Avatar
Dec 2007
Fernley, NV
Posts: 707
Liked 2 Times on 2 Posts

I believe the analog has a 3 degree differential, or at least I know mine does. I went with the analog as I am pretty sure the beer stays the 42 degrees that I have it set at. I am fairly certain that ambient temp in the fridge is going to drop 3 degrees before the beer does.

As for where I placed it, I ran it through the drain hole (I had to remove the compressor to do this) and along the back of the fridge to the top. I then placed the probe in a white labs vial that I had filled with the "blue goo" from one of the reusable freezer packs. Sealed the vial with silicon and used high strength double sided tape to attach at the top of the fridge near the thermostat.

Works great and I have never had any cooling issues.
"There seems to be an over abundance of beer related items in this house." -SWMBO

Reply With Quote
Old 04-08-2009, 05:16 AM   #5
Got Trub?
Apr 2007
Washington State
Posts: 1,538
Liked 9 Times on 7 Posts

I use analog for my keezer, as AFAJ pointed out the beer itself doesn't see the 3 degree change. I do use digital for my fermentation fridge as I want tighter control over my fermentation temps - especially with lagers.


Reply With Quote
Old 06-03-2011, 11:22 PM   #6
JJL's Avatar
Feb 2010
, WI
Posts: 1,287
Liked 30 Times on 23 Posts

Go with the digital. It'll keep your beer at a more constant temp - less fluctuation. As far as I know you don't have to weld either type. You just stick the probe in the fridge.

Reply With Quote
Old 06-05-2011, 04:32 AM   #7
Mar 2011
Tampa, Florida
Posts: 307
Liked 3 Times on 3 Posts

I got a digital Ranco for $55 on eBay and wired it with a $5 extension cord from ACE in a 30 minutes.

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Problem with Johnson Controls A419 Digital Temp Controller mikechambers Equipment/Sanitation 19 03-24-2015 05:35 AM
How do you convert the Johnson Controls temp regulator? Bouza Equipment/Sanitation 4 11-09-2008 11:27 PM
Johnson Controls Temp Regulator used with a Freezer? RLinNH General Techniques 3 12-01-2007 07:53 PM

Forum Jump