Your pump should also have a float switch that detects when water accumulates in the pit. Outdoor Sump Pump Installation: A sump pump is a great home appliance that is used to collect water from around the foundation and pump it away from the house. This is especially helpful if you have an unfinished basement. Your contractor will then clean up the floor afterward. These units are ideal for outdoor installations. Hopefully, your new sump pump is working its magic. Pedestal pumps are cheaper and less noisy. However, the costs can vary based on the area you live in and the type of drain you want. The cost of installing a sump pump can vary significantly. Coarse gravel helps the water drain into the pit. To ensure your drainage is effective, the best option is to have it installed when you build your house. However, this is not always possible.