Is there a cheap, clean way to heat a green house or glass house other than electricity.
My power bill is quite high through winter due to our reverse cycle ducted airconditioning, so I am looking for a cheaper alternative to heat my GH, if there is one.
I am looking at propane gas powered tent heaters as these are designed for low emmissions. Here's one type I was looking at, open for comments, suggestions.
http://www.preparedness.com/colpowporinc.html
This model can be attached to a 6 Kg gas bottle which evidently will give 2 weeks of use.