The MH125FAV is the least powerful of Mr. Heater’s line of propane forced-air heaters for smaller jobs (see the MH55FAV and the MH85FAV). The heater gives you 35,000 Btu–enough to heat 800 square feet. Though the larger models give you more Btus, each heater in the line shares the same basic features, including an automatic shutoff with loss of flame or power supply and a high-output fan that circulates heat quickly. Hooking the heater up to the 20-pound propane cylinder (not included) is easy, and the 10-foot hose and regulator are included. CSA certified. One-year limited warranty. What’s in the Box.. Heater (heater body kit, control box assembly, valve with thermocouple, wire assembly, electrode, high limit switch [240 degrees F], thermocouple, motor 0.74 A, grille assembly, fan blade, 6.75 x .75 pitch, power, cord assembly, strain relief bushing, piezo ignitor, clip handle, handle), 10-foot hose, regulator, operating instructions and owner’s manual.