Search for: [Abstract = "It is shown that characteristics of buildings \(insulation, window performance, heat recovery, etc.\) and type of the heating system have undoubtedly a strong influence not only on the energy\/exergy demand and consumption but also on the sensitivity of the energy\/exergy parameters to variations of external conditions. According to the results obtained after implementations of energy efficient solutions coefficient of variation of energy\/exergy\-based parameters can be increased up to two times."]