The length of time to replace a grinder pump depends on how much wiring and piping you have to do to disconnect from the old grinder pump and reconnect to the new one. This is what will take the longest amount of time throughout the installation. \
Most of the time, this is a job that can be completed in just a few hours. If there is a delay because you have to order a grinder pump or a pump part, you could be waiting for a month or more. \
Obviously, you'll need a temporary sewage solution if this is the case. \