The straight up type installation gets the benefit of the warmth from inside your home. There is not much difference between creosote forming from burning dry softwood as compared to burning green hardwoods. Hardwood, if unseasoned or wet, could even produce more creosote than pine. The following are just a few suggestions for reducing creosote buildup and getting the most out of your wood burning. Season wood for at least six months - Store under cover.
Hardwoods are preferred.
Do not use an oversized stove. Keeping a small fire at a low burn will cause creosote buildup. Keep as much chimney as possible inside the house. Stove pipe joints should be made with crimped end of your pipe facing down toward the stove. The pipe that sits directly on top of the stove should always go into the flue collar and not around the exterior.