WHAT DOES WOOD STOVES MEAN?

I am leaning toward a pellet stove because I presently burn pellets in my basement. Also a woodstove would demand a large amount of piping and would need to be Situated near the middle in the garage to vent out with the roof higher than the ridge. I'm arranging on buying a utilized pellet stove with any luck , around 40,000 BTU's.Efel stoves were b