Professional selection software, developed by ERI Corporation, is very precise and reliable. Using our selection software, you can make correct choice of heat exchanger based on your personal demands. For our partners we have developed special tools to integrate through API our dll in their system. Selection program is on request available for efficiency calculation of all our counter-flows and rotors. With great pleasure, ready to give you all necessary information about our products and how it can be useful for ventilation system, how to use software.