Torpedo Propane Heaters Feedback?

[netsurfr]

Looking for feedback on using one of those torpedo forced air propane heaters to warm up an uninsulated T-hangar. I have an engine and cabin heater but the thought of being able to warm up the hangar before flying would be nice but not sure how effective and safe one of these heaters would be for this purpose so let me know if you have experience with these or other similar hangar heating solutions.

 

[Tweety]

 

[Cliff]

 

[Unit74]

 

[kshaw]

 

[netsurfr]

 

[BGFYankee]

 

[Warriorgreg]

 

[poloengr]

 

[netsurfr]