Back in our backyard days, we used the oil-filled type without significant
problem. Before that, we used an attachment that fit on one of those small
propane tanks one uses for BBQ grills. That also worked OK, but seemed more
dangerous [more of a concern for you, with an attached balcony, than we had
with a detached shadehouse] and did occasionally blast some buds.

--
Kenni Judd
Juno Beach Orchids


"Bryan" wrote in message
news:69I5f.248472$tl2.218553@pd7tw3no...
Hello All:

Fall is here and it's time to start thinking of some heating for my
enclosed balcony where I have my orchids. I was pondering three options.
Add a baseboard heater, use a portable convection heater (not really sure
what these truly are), or a portable oil filled "radiator" electical
heater. Out of the three which is a more "gentler" heat. I am leaning more
towards the oil filled electrical heater.

Thanks