The construction industry in the post -Soviet space has not yet fully recovered from the blow of the global economic crisis of 2008, but at the same time the volume of private construction did not decrease. The greatest demand among consumers and further are suburban cottages built behind individual projects. Everyone understands that such houses are worth it, respectively … However, some changes have occurred here. The main of them was the growth of demand for alternative sources of єrels of such “houses”. This trend has led to closer interaction between builders and developers of new technologies who jointly have to select the most optimal option for equipping such cottages. If we talk about alternative to ordinary gas heating systems, it is clear that solid -fuel boilers are most often used. Fortunately, the production of solid fuel boilers is quite developed in our country. A little more complicated with the choice of energy supply source, since you have to choose between solar panels and wind power plants. However, there are more exotic, at least for us, an option that provides for a solution to two problems at once – the use of subsoil as a heat source. So even a small review shows that choosing autonomous energy sources is quite simple.