1. Extend your heating runtime and hook up your portable heater to a large remote propane tank with the genuine Mr. Heater 12-Foot Hose with Regulator (Model F271803). Designed specifically for Mr. Heater Big Buddy and Tough Buddy portable heaters, this heavy-duty 12-foot hose lets you connect directly to a standard 20 lb. propane cylinder. Featuring a built-in regulator, quick-connect fitting, and a hand-tighten Acme nut, it delivers safe, reliable, and uninterrupted fuel flow for camping, hunting cabins, garages, or job sites.