I took my new spike 15g kettle for a test drive using a 220k burner. I took 6 gallons of water from 75 to boiling in a little over 25 minutes. Is it just me or is that a bit slow?
http://www.homebrewing.org/14-Propane-Burner--220000-BTU_p_1190.html
http://www.homebrewing.org/14-Propane-Burner--220000-BTU_p_1190.html