Propane tanks can be stored in garages, but there are some important things to keep in mind. First, make sure the tank is stored in an upright position and away from any heat sources. Propane is a flammable gas, so it’s important to keep it away from sparks or flames. Also, make sure the tank is properly vented to allow for airflow. If the tank does not have a vented cap, you can install a vented cap yourself. Finally, always follow the manufacturer’s instructions for storing propane tanks.