I use two in my set-up (I got a steal on them). Your pots must be magnetic, some stainless steel is, some isn't. I use one for the HLT and one for the Mash Tun. It is great for step mashes - no danger of scorching. I don't use them for the boil, my ~1500 W units will only bring ~ 6 gal to a simmer. I do know they will boil 3 gal of tomato sauce just fine though if you are doing partial boil extract brews. If that is the case, they would work fabulously and your aren't stuck in the kitchen as you can simply plug them in wherever you want to brew