If you have a large furnace, you may be wondering if it can be placed on a foundation. The answer is yes, but there are a few things to keep in mind. First, the furnace must be properly anchored to the foundation. Second, the foundation must be able to support the weight of the furnace. Third, the foundation must be level and free of any obstacles that could block or impede airflow. Finally, if you have a gas furnace, the gas line must be properly installed and connected to the furnace.