Propane heater??

[CityDweller]

I would like to point out that propane heaters produce carbon monoxide. This is deadly stuff and will make you sick. I would not play with a propane heater indoors unless in a sealed and vented room which could be purged before entry by a human or animal.

[hopscotch123]

I may be wrong but wouldn't a propane heater raise the RH?

Sure does!! One of the reasons bottled Co2 is far better for sealed rooms but more expensive.