A/C Unit Glycol Sizing

[schmahly]

Hey all. So I see a lot of DIY glycol projects. Most seem to be for 5 gallon batches using a 5000 btu/hr unit. I'll have a 15 gallon batch size. Would 5000 btu/hr still suffice?

 

[Jtvann]

I think mine is a 6.5k unit and am using it to cool a 14 gallon unitank. Not really answering your question, but I think youd be fine with that setup. I've been able to maintain 29 degrees with a 5 degree swing in ambient 90 degree temps. The unit is off a lot more than its on.

 

[schmahly]

Are you able to cold crash 14 gallons?

 

[schmahly]

I mean are you able to maintain 29 degrees in your glycol bath or fermenter?

 

[Jag75]

I think people control more then 1 FV with the 5,000 btu . If so I would think youd be fine. You could always up the btu for peace of mind.

 

[Jtvann]

Yes. Easily. That's what I mean by saying I can maintain 29 degrees with 5 degree variance.

I cold crash at 35 with a 1 degree variance in my fermenter.

 

[schmahly]

Awesome. Thanks so much. At this point Walmart is selling there A/C units for under $100. I'm gonna have to pick one up.

 

[Jag75]

Awesome. Thanks so much. At this point Walmart is selling there A/C units for under $100. I'm gonna have to pick one up.

Good deal. It was surprisingly easier then I thought it would be. Works perfect as well.

 

[schmahly]

Sweet! I'm looking forward to it. We don't have a deep freeze at the moment because....well ya know. Priorities!

So what quart size cooler are you running?

 

[Jtvann]

One of the orange 10 gallon round igloo coolers. Basically my old plastic mash tun. For me, it got the radiator better vertically than laying horizontal.

 

[Jag75]

I use a 50qt cooler