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I've been thinking to use an old dehumidifier to cool water and then use the cold water and CFC to cool the wort. If you could get a powerful enough air conditioner you could run the gas straight on to the CFC. A plenty of Chinese manufactures to choose CFC's from. Or if you can find an old ice...

Our cat is a mash-cat:

OK, I got the mash done. It's better now that I limited the pump reruns, but I think I need to limit the pump on time as well when I get near the set point. 4C(7.2F)/minute mash temp change, but the probe was quite near the top of the grains.... Easiest way to get fast ramp times is to place...

Put your gear on a trolley and use a conical lid on the BK + extraction fan (computer fan in my case). No steam inside the house and, if I'm tired I just push the whole thing in to our quest bedroom to wait for the cleaning. It's insane to brew outside :)

Nice! Here's my Weider treadmill conversion:

Thanks, I've put a lot of hours on this, hopefully it saves someone the trouble of testing things. I've had almost all HERMS-systems I've seen anywhere and I think that the CFC-herms is the best without any question. Only big down sides are the difficulty of the temp control + need of the 2nd...

I've build HERMS with a dedicated HERMS-kettle. I had 2kw heating power (an induction stove) on it. I used a very small amount of water to get the response as fast as possible (1 quart). I made a hex-spiral rather than a coil, if you are wondering about the amount of water. It worked great, but...

Yep, I do that also every time I use my tea kettle ;) Seriously, it would easily pass IP6, probably even IP7 (30 minutes immersion at depth of 1 m) standard. And it's all behind a RCD, just in case.... The vertical element is great when doing the whirlpool. I had a horizontal in my previous...

I measure wort and mash temperatures and then calculate "offsets" for temperatures. Then just a simple "if switch" and a couple of cfc-pump on time limiting if's. No need for a PID and I don't know how complicated it would get with 2 probes and step mashes, probably complicated enough.... It's...

I've a similar system. A one big advantage is that it's very fast. I'm getting 3C/min step's on mine (5kg mash) while using 80C HLT-water for the CFC. It's pretty hard to control though, I'm using 2 measuring points (wort + mash) and an Arduino to keep mash temp in control. I can keep the mash...