Mash Tun With Thermometer - 10 gal. Cooler

Mash Tun With Thermometer - 10 gal. Cooler

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When you’re new to brewing, knowing what to buy & how to put it together can be challenging. Making a mash tun out of a beverage cooler is one of those projects you might not be ready to tackle on your own. Here at MoreBeer! we’ve gathered all of the components, and built a cooler mash tun for you!

This 10 gallon Cooler Mash Tun with Thermometer includes our AG330 mash tun with the addition of a built in thermometer. The 3" thermometer with 6" probe is preinstalled in the MoreBeer! shop. Installing a thermometer on an insulated cooler mash tun is tricky because you have to drill a larger hole in the orange plastic without damaging the inner white plastic wall. However, it is worth it. Now you can see the temperature of your mash without taking off the lid!
Mash Tun Includes
  • Best quality Rubbermaid insulated beverage cooler made of FDA approved food grade plastic
  • Stainless steel 1/2" ball valve installed in cooler
  • Stainless steel perforated false bottom pre-installed in cooler
  • High temp, FDA approved Silicone tubing
  • Stainless steel tubing connector with 3/8" barb
  • High quality bi-metal thermometer with 3" face and 6" probe.
Internal dimensions are 18.375"H x 12.875"D.
External dimensions are 20.875"H x 15.875"D with lid on.
Item # AG335
Shipping Eligible for Free Shipping Program
Availability California - Out Of Stock
Pennsylvania - In Stock
Weight 12 LBS
Community Q&A

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Browse 5 questions Browse 5 questions and 36 answers
Why did you choose this?
MoreFlavor Store
To use for sparge water
Jeffrey D on Oct 26, 2022
Recommended as best budget mash tun by a reviewer
Stephen W D on May 4, 2022
To use for sparge water
Jeffrey D on Oct 26, 2022
Because the price was reasonable and it included a thermometer where others didn't for the same price or higher.
Matt B on Oct 4, 2022
Recommended as best budget mash tun by a reviewer
Stephen W D on May 4, 2022
Getting 2nd mash tun to increase end yield to 10 gal.
Carol K. on Jan 11, 2022
Recommended by friend
WRB on Sep 2, 2021
all grain brewing
Dave P on May 5, 2021
Because the quality
Israel G on May 1, 2021
SS Brewtech version I wanted wasn't available
Eric Alan Clarke S on Mar 12, 2021
This is the way.
Douglas S on Jan 7, 2021
Alejandro S on Dec 9, 2020
Present for boyfriend!
Rosie L on Jan 13, 2020
My son wanted it for Christmas :)
Christine L H on Dec 18, 2019
Upgrade my all grain setup from using my boil kettle as a mash tun
Alex N on Jul 3, 2019
Tyler on Mar 22, 2019
Upgrading to all-grain brewing.
Barry G Dreher on Jan 18, 2019
To start all grain brewing.
Keri M on Jan 17, 2019
Cause its what my son wanted
Robert L on Jan 5, 2019
liked this model
Fred L on Jan 1, 2019
This is better than my home-made 25 year old set-up.
Eric B on Nov 26, 2018
Replacement for existing coolers
Ron Wellman on Nov 24, 2018
Overall great value and convienence
derek remington on Apr 6, 2018
Had been casually looking for parts to build a mash tun. Saw your offer posted on homebrewfinds.com
Rick H on Feb 20, 2018
great deal, just what I wanted
Mark Mabry on Feb 19, 2018
Because the price was reasonable and it included a thermometer where others didn't for the same price or higher.
Matt B on Oct 4, 2022
Getting 2nd mash tun to increase end yield to 10 gal.
Carol K. on Jan 11, 2022
I bought one of these, but had to downsize for a while. I got rid of the cooler, but kept all the original hardware. Would you sell a drilled cooler? If not, what size holes would I need to drill myself in a new one. Thanks! This thing was so great.
Josh on Feb 7, 2020
BEST ANSWER: Hi Josh, unfortunately we don't sell just the coolers by themselves. However, the bulk head fittings will require a 1'' hole.
S/S Bulkhead 1/2
S/S Bulkhead 1/2" FPT x 1/2" MPT
S/S Bulkhead 1/2
S/S Bulkhead 1/2" FPT x 1/2" FPT
What is the grain capacity of this tun? Will it hold enough grain (~22 lbs.) for a 10gallon batch?
Matthew Taylor on May 28, 2020
BEST ANSWER: It would be very tight for a 10 gallon batch - maybe if your mashes are thick. I would assume you would use at least 7 gallons strike water for 22 lbs and with the grain displacement, that would put you at ~9.2 gal used and don't forget the false bottom takes up space too. And if you wanted to do a higher gravity beer, it definitely wouldn't work. It works great for me brewing 5.5 gallon batches and you could easily brew as much as 8 gallon batches on it - but I'd look for a larger model for 10 gallon batches.
What size hose will I need for the ball valve barb? Can’t tell if it’s 1/2” or 3/4”.
Nicki Sener on Dec 22, 2019
BEST ANSWER: You need 3/8' ID tubing. I recommend the beverage-grade vinyl tubing with a 5/8' OD. This is a high quality tubing and the thicker wall makes it more durable. I also recommend using a 5/8' diameter spring-style hose clamp to secure it to the barb. It makes for an easy and quick connect/disconnect.
how many gallons needed to reach thermometer probe ?
KIRK VANBROCKLIN on May 19, 2018
BEST ANSWER: I regularly mash 10-12 lbs grain in 3-4 gallons water and the water line for that mix is at least a couple inches above the probe.

4.5 / 5.0
13 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 4 out of 5
arrives ready to mash
treated myself to a pre-fabbed setup, as cost was comparable if I considered time. had to do a little trimming of the connections to correct an airlock when i first used it, and that mid-brew fix made a second point clear - the edges on the false bottom are very sharp! However I till recommend the setup with a caveat to check that it will drain properly with the false bottom in place, and don't get cut and bleed into your first all-grain batch like i did.
November 5, 2021
1 year ago
Rated 5 out of 5
Works like a charm. 1 degree or less of temp loss over 60 minutes
August 14, 2021
1 year ago
Rated 5 out of 5
Great product, works amazingly well. Highly recommended for small batches.
April 5, 2021
1 year ago
Rated 4 out of 5
Great mash tun, perfect size for 5 gallon brews with room to spare.
Mash tun worked perfectly for my first use! 12 lb grain bill mashed with plenty more room to spare. Although the thermometer was reading about 4 degrees cooler than my instant read thermometer when I compared the two. Need to look into it further to ensure it’s as accurate as possible.
Broke her in with a Canadian Dark Ale. Held temp perfectly for my 60min mash.
12lb grain bill with plenty of room to spare!
March 26, 2021
1 year ago
Rated 5 out of 5
Works like a champ!!!! Kept temperature exactly the same for the entire mash session!
November 17, 2019
over 3 years ago
Rated 5 out of 5
Works great
Thermometer is perfectly accurate against my Thermapen. False bottom and ball valve are very good quality. Holds my mash temp within a degree for a 60 minute mash.
January 4, 2019
over 4 years ago
Rated 2 out of 5
Great product...if it didn't leak
I ordered this product because I screwed up my mash tun cooler when I tried to add a thermometer on my own. Everything looked to be hooked up and ready to go when the mash tun arrived...but after I cleaned it and then used it for my first brew, I found it leaked from both the spigot and thermometer areas..not fast, but enough to cause a mess. The other problem here is the liquid leaked into the insulation and I'm concerned it will negatively effect the insulation properties of the cooler in the future. Frustrated...may just have to go back to a simple cooler with a floating thermometer.
October 5, 2018
over 4 years ago
Response from MoreFlavor
Hi Barry - The insulation should still be fine. Did you ensure all fittings were snug prior to use? Shipping and handling can loosen them upon reaching destination.
October 12, 2018
Zach R Staff
Rated 4 out of 5
Great buy for the price!
April 4, 2018
over 5 years ago
Rated 4 out of 5
Nice mash tun
Nice mash tun.Would have given it 5 stars,but the 6 inch thermometer probe gets in the way of mixing the grains.
March 11, 2018
over 5 years ago
Rated 5 out of 5
Awesome Mash Tun
Awesome Mash Tun that holds temp within a degree or two! The fittings are top quality and the false bottom is nice. I use a bag for the grain for nice clear wort -- but the the false bottom works well on it's own. Over all -- this MT will last!
February 24, 2018
over 5 years ago