[Phil_M]

With the change from electric brewing to my current batch sparge/propane burner setup, I'm in the market for a new brew kettle.

I've got a good handle of what I'm looking for, and I'm settling towards the SS brewtech kettles. Question is, what size to get?

Right now I brew 5 gallon batches, but I'm hoping to expand into 10 gallon batches soon. Would a 15 gal kettle work for both? I really don't see why it would not, but as normal I always want a second opinion.

[Slowbrew]

In my opinion a 15gal kettle would work for both.  I have a 12gal one that works well for 5 gallon batches.  Lots of headroom.  The biggest consideration I have to work around is boil-off rate.  The larger surface area increases evaporation.  You can adjust for it but it can surprise you on really low humidity day.

Paul

[Phil_M]

That's my thought. No thermometer means no "real" minimum volume, but boil off could fluctuate a little. That's no biggie.

[Wort-H.O.G.]

id have to step up the size if i went to 10gal. i usually have 7.5-8gal volume going in, and boil off and trub left behind leaves me enough for the 5.5ish gals into carboy.

i've thought about it but they setup and brewing location would make lifting impossible-I'd have to rearrange and use gravity or pumps so I didn't break my back.

[Phil_M]

My current plan is to use gravity. Kettle on raised burner -> therminator sitting on the ground -> 6.5 gal carboy. If I end up getting a chest freezer/conical setup I'll likely just collect cool wort in sanitized buckets, and lug those in to the fermenter.

[euge]

I went with a 20 gallon and have not regretted it. And set the the thermometer low enough to read a top of a 5 gallon batch. Went weldless and did all the work myself.

It would be easy to install a Blichmann thermometer on a SS Brewtech Kettle or have them do it.

[klickitat jim]

My BK is 15 gal. The largest batch I do is 8 gal to the fermenter (sour beers, trying to limit headspace). Thats about 10 gal preboil, and its fine. I think if I added two more gallons I would have to be very vigilant at hot break, or use fermcap.

[69franx]

I bought a 15 gallon for my mostly 5-6 gallon batches and it works nice enough that a newbie like me can't complain (new in that I really have nothing to compare it to) and o have done a 10 gallon batch in it that was over 12g pre boil, took a lot of careful watching.

[lindak]

In the last couple of years I started brewing after a 20 year hiatus.  I do 5 gallon batches in a 15 gallon Blichmann.  I do BIAB and found the kettle size to be perfect.  I boil off about 1 1/4 gallons an hour.  The thermometer is too low to help me figure my temp as I'm cooling with an immersion chiller, but that is not a big deal. (Use a thermapen to mash and don't rely on the kettle's thermometer).   I couldn't do a 10 gallon BIAB batch, but a sparged batch would be very do-able. 

Good luck with your purchase! 

[Phil_M]

So, what I'm hearing is it's great for 5-6 gallon batches, and capable (though not ideal) for some 10-gallon batches. That'll do me fine till I can spring for a dedicated kettle for 10-gallon batches.

FWIW, my current kettle is a 9-gallon bayou classic that I've had for ages. I'm familiar with the edge-of-your-seat experience of hot break with only a gallon on headroom. 

[coolman26]

My kettle is 25 gallons. I wanted the capability to brew 15 gallons finished in the kegs. I would go 20 gallons for your needs. I wish my kettle were 30 though. I like to have the extra room for boil over protection. The cost is minimal IMO. All in what is right for you. I use 20 tip NG jet burners and really like the setup.


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