reply to dick white
Re: Sump pump w/ battery backup When I purchased my current home had a finished basement with only a single zoeller sump pump installed.
That was my first project to replace it with a Watchdog Big combination pump. »www.lowes.com/pd_120110-84862-BW···cetInfo=
Now I have a primary electric and battery backup. Backup unit will kick in case of power outage or a problem with main pump. Can say the watchdog is much quieter than the zoeller.