Blade dampers make less noise and come in two varieties: parallel and opposed dampers. Parallel blade dampers: Their blades move in the identical path and manage the airflow. If the temperatures in your home are not fluctuating lots, it implies that your HVAC technique will not be beneath much tension. https://aircontroldampersforhotcl80012.ageeksblog.com/35296882/top-guidelines-of-air-control-dampers-for-hot-climates