Presented work contains an analysis of the wood biomass gasification unit, operating in combination with internal combustion engine and heat pumps application. Calculations shows quite low values (approximately 1,6) of heat energy transformation index against traditional heat pumps schemes. Nevertheless, there are possibilities to improve efficiency of such systems, what can become important in situation of total crysis in fossil fuels supplies and prices. Low potential earth heat and exhaust gasses heat utilization with gasgeneration could return wood gasification to a profitable system.