a cast burner or a “flame thrower” type jet burner?
> about a few dollars difference between brands/models. I just want to > know what is reasonable. My circa 70K BTU burner does fine with 10 gallon batches. I have a 17 US gallon brewpot which I fill with water. It takes about an hour to an hour and a half to bring my cold water up to temp. After the sparge, it takes about an hour to bring the wort to a good rolling boil. That’s for 10 gallons. I know that the 170K BTU burners will probably cut those times in half, but then you’ll be using a lot more fuel. I don’t feel a need at this point to cut the length of my brew day. Now that I have a dedicated brewery I’ve already cut an hour off just in cleanup time. Also keep in mind that the regulator you use has a lot to say about burner output. With the regulator that came with our burner we are just barely able to maintain a boil in our 64 litre aluminum pot. But replace the green regulator with a red high-pressure (3psi) reg, and it makes a dramatic improvement and can even boil a huge 200
