Based on a 10 lb tank and at the full heat setting you will get 14.3 hours of continuous use. Please visit the thermablaster web site and click on fuel consumption calculator to look at different scenarios for usage time.
This unit is almost silent. There are no moving parts or fan.
Yes provided there is not a significant wind or rain when being used.
No, this unit uses Propane as fuel and Piezo ignition system.
Yes, this can be used indoors but it cannot be used in enclosed spaces, such as a home.
The regulator and hose are included with the heater.
"Like if the heater used up oxygen" How juvenile! Correction: Has this model the low O2 safety feature–––to warn of used up oxygen?