Hello Keith
not sure about the running costs but I am certain that I have read somewhere
that the burning gas gives off fumes that are harmless but are beneficial to
the plants in the form of foliage feed.

....................Leslie


"keith ;-)" wrote in message
...
Is anyone using a greenhouse heater with gas bottle supplying it,if so
how
long do the bottles last?I am thinking of buying a 4.2 kw greenhouse gas
heater with hose & regulator instead of 2kw electric heater which I have
just received electric bill for 120 quid for two month ouch!

--
Thanks Keith,England,UK.