How-To Geek

Cool a Computer with Toilet Water

When most people opt to use water cooling they put together tidy coolant reservoirs complete with ambient lighting and the like. This build involves a hole in the wall and the tank of a functioning toilet.

The design, courtesy of Jeff Gagnon, is unconventional, but effective. Opposite of his wall-mounted PC is a bathroom. In that bathroom he has a coolant pump in the tank of the toilet. Using the toilet tank as a thermal sink he keeps the CPU at a nice chilly 66F. Hit up the link below for more pictures, including a peek inside his hacked together toilet-tank cooling rig.

How to Cool a PC with Toilet Water [Extreme Tech]

Jason Fitzpatrick is a warranty-voiding DIYer who spends his days cracking opening cases and wrestling with code so you don't have to. If it can be modded, optimized, repurposed, or torn apart for fun he's interested (and probably already at the workbench taking it apart). You can follow him on if you'd like.

  • Published 04/3/12

Comments (5)

  1. Atomsk

    Why would anyone do this? Also did anybody look at the other pics his toilet is disgusting!

  2. r

    yes, considering the context of all this it was extremely unnecessary of him to provide a self-portrait too.

  3. David

    anyone elese thought it was a april fools joke like google did a few years ago with toilet internet

  4. Anonymous

    I’d sure hate to see what kind of spam that guy gets. (grin)

    But you got to hand it to him. It makes sense on two sides (no pun intended). Obviously, one is to keep the computer system cool. But if he can also warm the toilet water up before it’s flushed that helps keep the pipes a bit more clear too. Kudos!

    Here’s another idea: maybe someone can make a more economical refrigerator that opens up somehow to take advantage of colder air when the outside weather is cold. For many people in colder climates that would make a lot of sense than to also run an energy sucking refrigerator compressor. (Sort of like a reverse fireplace, you might say.) But you never see anyone do that. Probably because we like consuming oil and paying energy bills (to also run our computers).

  5. ProstheticHead

    @Atomsk. He’s not actually pumping the toilet water through to the cpu waterblock, rather he’s using a heat exchanger to radiate heat from the [closed system] to the water in the cistern.

    That toilet is filthy though, what was he thinking? Lol.

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