Используйте «ventilating system» в предложении

1. We admit that our ancestors in the profession designed beautiful castles, magnificent cathedrals and lovely châteaux, but we remember that these castles, these cathedrals, these châteaux were planned without any comfort; that they had no plumbing devices, no methods for cooking, no systems of heating or ventilation, and no way of getting light but the miserable taper; while to-day the architect, besides being a thorough artist, who knows how to design and to color, besides being thoroughly up in the history of his art, must know how to plan for comfort, to construct for strength and stability; must understand all the details of boilers, machinery, dynamos, electric-wiring, heating and ventilating systems, plumbing and sanitation, and lastly must be able to manage the complicated finances of large undertakings