Run time with our 250 gallon still, with one of our properly sized Rite boilers, can be as little as 4 hours including heat up. I would never do a whiskey run that fast but the still will do it, if that's what you want. It would only take 10hrs if you ran an undersize boiler because of an inadequate gas supply but a 1/2" or 3/4" line at medium or high pressure will give you way more than enough gas for the faster run time. You could run a 600 gallon pot still off that with no issues. More than 500 of our stills are in distilleries across the US. Our fastest non vacuum pot stills put out 75 gallons of whiskey per hour and cost less than continuous column stills with the same production. Our vacuum stills will do stripping runs in as little as 1.5 hrs from start to finish. Most of our customers purchase full sets of equipment from us including, the still, CIP system, steam boiler, chiller, mash tun, fermenters, mash pumps, high proof pumps, receiving tanks, proofing tanks and blending tanks. The electrical systems on our stills, are built in house here in the US. Our agitators, and pumps have US made explosion proof motors. If you would like a quote just give me a holler. 417-270-0930 or email paul@distillery-equipment.com. Thanks and good luck with whatever you decide.