The bachelor thesis deals with heat pumps and their use in building modern heating systems. In the first part of thesis is theory describing the principle operating of heat pumps, their types and basic components. The other part describe low-energy house and its parameters. In the last part of theory is discussed the issue of modern heating systems and types of heating elements used in it. In the practical part is the prescription of family house given by supervisor, the calculation of its heat losses and the design of the heating system. Further, the heat pump design and its economical comparison with selected heat sources