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-   -   refrigerator temperature controller. (http://www.homebrewtalk.com/f39/refrigerator-temperature-controller-409388/)

Brewmex41 05-06-2013 07:53 AM

refrigerator temperature controller.
My dad redid his kitchen and he's letting me have his old fridge. In the future, I'd like to lager with it, but for now I would like to use it for an ale fermentation chamber. I don't have a/c, so my beers have been getting up to 74/76 F
Can someone give me some advice on how to keep a fridge around 68-70 on a budget? I'm living with my wife and 8 month old son along with 3 mooching grown adults so my budget is kinda limited.
Thanks and cheers!

wes_1696 05-06-2013 03:35 PM

I would look on E-bay to find a good temp controller.

italarican 05-06-2013 03:39 PM

I use the digital one from Johnson, and it's been amazing. There periodically are sales on it. I believe I paid a little over half of what it costs on amazon right now, so it may be worth price comparing:


Brewmex41 05-06-2013 03:48 PM

Ok I'll shop around. Thanks!
Is it possible to keep the fridge at fermentation temp and the freezer at regular fridge temp, for beers that are ready to drink?

lemy 05-06-2013 03:53 PM

Relatively inexpensive
I have had a Johnson a419 and they work great, but last year at NHC (seattle) I discovered Control Products. They have the TC-9102D model


I believe I paid $60.00 for it.

It is a dual stage relay, which means it can both Heat and Cool using the same temp sensor and everything.

I like the red LED which allows you to easily see the temp in the dark if needed.

The nice thing over the Johnson is that you don't need to disassemble it to change jumpers when taking one of the relays from Heating mode to cooling mode, it's all done via the LED and push button interface.

doby 05-06-2013 08:50 PM


See post #21 of this thread, instructions on diy thats probably cheapest

wfowlks 05-06-2013 08:56 PM

I bought a Johnson controller.... Now I regret it. I'll sell you my analog one cheap, so that I can build myself another one of these:

I built it and loved it, total price was around $35, digital does heating and cooling, and will keep it within .1 degrees celcius.

The only problem is that ... its in celcius, which is not really that big of a problem

(Note: I regret the price of the Johnson controller, because it was expensive and for the price of it, I felt that it was lacking. Also being able to do both hot and cold is nice, but it doesn't provide that)

Rbeckett 05-06-2013 10:14 PM

I went the STC-1000 route. I am very satisfied with the results so far. It has hit and remained at whatever temp I have selected during the testing phase and it is fermenting a 5 gallon batch at 58 Degrees right now. Dont know about the freezer.frtidge spilt though because they use a common refrigerant system and compressor so the differential wont be very large if any.

Wheelchair Bob

Stix 05-06-2013 10:24 PM


Originally Posted by Brewmex41 (Post 5171580)
Ok I'll shop around. Thanks!
Is it possible to keep the fridge at fermentation temp and the freezer at regular fridge temp, for beers that are ready to drink?

Yes it is.

Brewmex41 05-06-2013 11:05 PM


Originally Posted by Stix (Post 5172683)

Yes it is.

With one of these setups?

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