Authentic Mongolian yurts (compared to any other yurts) are very well insulated and easy to heat in the winter. Still, they remain cool in the summer mainly due to the felt insulation and cotton based canvas that repels the outside sun and heat. A natural cooling air flow can the be created from the top window simply by raising the side covers slightly. This millenary all natural air conditioning works extremely well but unfortunately as been forgotten in the more modern yurts! We do sell original Mongolian stoves. Although very efficient, they should be considered strictly decorative. They do not meet standard safety regulations. A standard wood stove, pellet stove or slow combustion stove will do the job, as well as a small electrical or propane unit. Yurts are well insulated, so please take care of carbon oxides accumulations on the floor, if you use a combustion stove! The yurt comes with a very light tin plate on the toono (top dome) with a 4 to 5 inch hole for the stove pipe. This is the way they set up their stove pipe in Mongolia. In North America, it is recommended you use a double insulated stove pipe and have it professionally installed in order to comply with local building standards. We can supply parts on request, but it is usually more convenient and cost effecient to do it on location. Stove pipes can be installed through the toono (the Mongolian way) or through the wall, depending on the stove location in your yurt.