Dyna-Glo10,000 BTU Liquid Propane Blue Flame Vent Free Wall Heater, White

Q: Does this heater turn on and off on its own?

Hello, this unit comes with a thermostatic control that automatically cycles the burner on and off to maintain a desired room temperature. If you need additional assistance, we're happy to help! Just reach out by phone at 877-447-4768 or email here: http://www.ghpgroupinc.com/CTUS.html

Q: Why does it have to have 100 pound propane tank

This heater must be used with a propane tank of no less than 100 Ibs capacity.

Q: Can I use this heater in a 12 by 15 shed

Hello William, Please refer to the manual for minimum space requirement, If you need additional assistance, we're happy to help! Just reach out by phone at 877-447-4768 or email here: http://www.ghpgroupinc.com/CTUS.html -GHP Group Customer Support-

Q: Does it have a tremostat?

Hello ~ if you mean thermostat, no this heater does not have a thermostat. It can be set for high heat or low heat but it is not temperature controlled. Hope this helps!