Buds, OMGosh I wish I had the space for a nice large more-permanent gh! That is going to be so nice and you will be so happy to have it! Our winters are not long or harsh where I live. But to have a safe place for all my lovelies would be so great.
The heaters I have are not plant heaters, but heaters I bought specifically to heat the plant area in the winter and used no where else. I, too, see no reason to fear the heaters. They are electric and plug into a proper outlet. What's more, the safety feature on them turns it off automatically if tipped over or if it over heats for whatever reason. IDK what my DH and GF are thinking but they are thinking the worse, a fire. I understand that. There are many space heater fires and death each winter.