The article examines using heat pump systems to provide heat to consumers effectively and save energy. Researchers studied the application of air-source heat pump units for heating buildings. They tested a heat pump installation to understand parameters like heat load, supply pipeline temperature, electricity consumption, and energy efficiency. The study found optimal values for the heat pump at specific working conditions. The benefits of using freons as the working substance were highlighted. The research also explored combining heat pump systems with modern heating devices like fan coils and underfloor heating to enhance heat supply efficiency.