I LOVE waking up to hot strike water. Easy as 1-2-3. - Home Brew Forums

 Home Brew Forums > I LOVE waking up to hot strike water. Easy as 1-2-3.

01-15-2013, 08:21 PM   #1
eyedoctodd

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Jan 2008
Downingtown, PA
Posts: 178
Liked 22 Times on 10 Posts

Ok, I know I'm probably not the first to do this, but i thought I'd share my system for heating my strike water while I sleep. There are calculators online that will let you figure out how long the water takes to heat, but I found I still needed to do some math in converting units, etc, then I ALSO had to count back from when I wanted to mash in. So I whipped up a spreadsheet to let me know when to set my timer for.

First, get yourself this bucket heater.
It's also available at Amazon, but right now the price is higher.

There are more powerful units which can heat the water faster, but then you have to worry about the amperage of your breakers and any extension cords you're using, not to mention the timer below. This one is cheap, safe, and does the job while playing nicely with standard circuits and cords.

Second, grab this Intermatic DT-620 Timer.
It's also available from Amazon.

Finally, grab my spreadsheet file and calculate what time to set your timer to kick on. It is pretty self-explanatory, except for the thermal loss cell. In real life, while you're heating your strike water, you're also losing some heat due to the imperfect insulation of the vessel. This box gives you the chance to use an adjustment factor if you are finding you're not quite at target temp at the expected mash-in time. (Note there are imperial and metric sheets)

{example: if you start with 45F water and want 170F, but you're finding the heater only got you to 160F; that means instead of a rise of 125F, you got a rise of 115F. 125/115 = 1.086. I would punch in 1.086 to adjust for the future if I did nothing different to insulate the vessel.}

is the location of the file in case the link above does not work.

It's a good idea to plug all this into a GFCI outlet or an external GFCI adapter. Check any cords etc that you use to be rated for 120V, 1000W, at least 8.33A (most household circuits are 15A so you're golden as long as you don't try to power this through a crappy thin extension cord.) As always, read all warning labels and don't run that heater dry!!

Enjoy! I hope others find this useful, I have saved a ton of time crushing my grains the night before and having my strike water heat while I sleep. Now I wake and mash and SWMBO is happier about shorter brew days.
Not to mention I'm saving a ton of propane. The electricity for me to heat 12 gallons of water (some of it I save for my sparge) costs about 40-50 cents! Normally that would have my Top Tier burner running for a good 45 minutes minimum!! Cheers

Todd
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Eleventy-Three Brewing Co.

Kegged: Ten Downing ESB, Grizzly Grundle Pale Ale Remux, Eldred Rock Light Northern German Altbier, Unnamed Kölsch.
Bottled: Brooke's Bliss Irish Stout
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Secondary: Who does that?
On Deck: German Pilsner

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01-15-2013, 10:29 PM   #2
LAbrewer
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Nov 2012
Posts: 112
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How fast will that heat a 5 gallon hlt to 180 F? I'm wondering if it might be worth using for mashing.

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01-16-2013, 12:56 AM   #3
lockwom
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Jan 2010
Falls Church, VA
Posts: 107
Liked 13 Times on 8 Posts

This is a really good idea. What's different from that water heater, and say, a 1000 W \$10 element from Home Depot, other than missing a wire?

Since I mash in a cooler, this sounds like a brilliant way to target a strike temp and avoid trying to account for preheating the tun or accounting from heat loss when pouring in. Gonna give this some thought.

01-16-2013, 12:59 AM   #4
Revvy
Post Hoc Ergo Propter Hoc

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Dec 2007
"Detroitish" Michigan
Posts: 40,938
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I've been eyeing those for sous vide cookers.

Good tutorial!!!!!
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01-16-2013, 01:13 AM   #5
eyedoctodd

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Jan 2008
Downingtown, PA
Posts: 178
Liked 22 Times on 10 Posts

@LABrewer - you would need to know the starting temp of the water. But if you punch all that into the spreadsheet, it will tell you.
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----------------------------------------------
Eleventy-Three Brewing Co.

Kegged: Ten Downing ESB, Grizzly Grundle Pale Ale Remux, Eldred Rock Light Northern German Altbier, Unnamed Kölsch.
Bottled: Brooke's Bliss Irish Stout
Primary:
Secondary: Who does that?
On Deck: German Pilsner

01-16-2013, 01:27 AM   #6
JonnyJumpUp
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Aug 2010
New York
Posts: 118
Liked 4 Times on 4 Posts

Even better you could also just plug it into a temperature controller.

01-16-2013, 01:33 AM   #7
weirdboy
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May 2009
Los Angeles
Posts: 8,219
Liked 493 Times on 398 Posts

Great post! However:

Quote:
 Originally Posted by eyedoctodd First, get yourself this bucket heater. It's also available at Amazon, but right now the price is higher.

Including shipping costs, this heater is actually slightly cheaper from Amazon for me.

01-16-2013, 01:48 AM   #8
eyedoctodd

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Jan 2008
Downingtown, PA
Posts: 178
Liked 22 Times on 10 Posts

@Lockwom - Yes, you can build your own heatstick - google "heatstick build" and you'll find lots of results explaining how to do it with sink pipe and JB-weld. Personally, I don't like to tinker with electricity and water and wanted something pre-built that was made for this. Building your own would allow you to go with a higher wattage to shorten the time to heat (and the spreadsheet will allow you to change the wattage), but for me I the 1000W is plenty to do it while I'm in dreamland as it will do 12 gallons in well under 4 hours. I did look at building a higher wattage heatstick (thinking I could maybe heat sparge water this way while the mash proceeded) but then I would need to figure out something different with my circuit breaker. What I do now is heat the 12 gallons to 175-ish, even though I'm only going to mash in with 6-7 gallons. The remaining water is added to with 6 or so more gallons out of the faucet to get back to 12 gallons in the HLT and I usually end up with it being about 110-120F. This still saves me time and propane getting sparge water up to mashout temp.

@Revvy - in reading the Amazon reviews before buying the bucket heater, I believe there were several who stated it did not work well for sous vide. Just an FYI.
__________________
----------------------------------------------
Eleventy-Three Brewing Co.

Kegged: Ten Downing ESB, Grizzly Grundle Pale Ale Remux, Eldred Rock Light Northern German Altbier, Unnamed Kölsch.
Bottled: Brooke's Bliss Irish Stout
Primary:
Secondary: Who does that?
On Deck: German Pilsner

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01-16-2013, 01:58 AM   #9
eyedoctodd

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Jan 2008
Downingtown, PA
Posts: 178
Liked 22 Times on 10 Posts

@JohnnyJumpUp - True, however the cheapest temp controller build I've seen with a heating stage is roughly \$59 just for the controller (I think I put another \$15-20 into the build to wire it all up), and this timer is \$23. Also, I'm not sure of the amperage one of the temp controllers will handle, I think I read on at least one of them that it was limited to ~3A. Not sure, that was a few months ago.
__________________
----------------------------------------------
Eleventy-Three Brewing Co.

Kegged: Ten Downing ESB, Grizzly Grundle Pale Ale Remux, Eldred Rock Light Northern German Altbier, Unnamed Kölsch.
Bottled: Brooke's Bliss Irish Stout
Primary:
Secondary: Who does that?
On Deck: German Pilsner

01-16-2013, 02:34 AM   #10
eyedoctodd

Recipes

Jan 2008
Downingtown, PA
Posts: 178
Liked 22 Times on 10 Posts

Quote:
 Originally Posted by eyedoctodd Also, I'm not sure of the amperage one of the temp controllers will handle, I think I read on at least one of them that it was limited to ~3A. Not sure, that was a few months ago.
Just checked and that controller will handle 30A, not 3A. My mistake.
__________________
----------------------------------------------
Eleventy-Three Brewing Co.

Kegged: Ten Downing ESB, Grizzly Grundle Pale Ale Remux, Eldred Rock Light Northern German Altbier, Unnamed Kölsch.
Bottled: Brooke's Bliss Irish Stout
Primary:
Secondary: Who does that?
On Deck: German Pilsner