CYPEHVAC is a program for designing air conditioning systems that covers heating, ventilation and air conditioning. This tool allows users to design radiators, fan coils, boilers, heat pumps, ducted ventilation networks, heat recovery units, fans and air handling units. The application allows the necessary information to be imported from other Open BIM tools, so that both the architectural models and the results of the CYPETHERM LOADS analysis can be used in the system design.