There are two main types of sump pumps: pedestal and submersible. A pedestal sump pump sits above the sump pit and uses a long shaft to connect to the impeller, while a submersible sump pump sits in the sump pit and the motor is sealed to protect it from water damage.
Regular maintenance of your sump pump can help ensure it continues to work properly. This includes checking the sump pit for debris, cleaning the pump and discharge line, and checking the electrical connections. It's also a good idea to have the pump professionally inspected at least once a year.
If your home is prone to flooding or water leakage in the basement or crawl space, or if you live in an area with high water table, a sump pump may be necessary to protect your home from water damage.