I personally don't think you really need a heater at all unless you live in
an exceptionally cold climate. If so, it may be worth biting the bullet and
paying the price. Good luck!


Michael Fermanis

Even then you only need a very small area open for gas exchange. It doesn't get
much colder then it did this past winter here in Connecticut, we didn't even
hit 20 once in January, it was HORRID and we did ok. I did lose some toughies
but my bigguns made it through the winter great.
Colleen
zone 5 Connecticut.