Choosing a backup sump pump is an important task. We trust our basements to these pumps and we expect a lot out of them. Take the time to choose the right pump for the job. If you do not have a backup sump pump, now is the time to get one. There are a lot of choices out there.
Gaining the advantage of a truly redundant system is the only way to go. That is, the system obviously has a separate pump but it also has a separate float switch. The secondary pump uses a 12V battery as a power source. The battery should last 4-5 years if properly maintained.
Pumps are rated in horse power and will typically be in the size of 1/4 hp, 1/3 hp or 1/2 hp. More importantly is how much water does the sump move in a given amount of time. This rating is Gallons Per Hour or GPH.
Some 12v sump pump setups have a small weep in the pipes after the pump and before the check valve. The secondary pump will also have a weep hole. It's important to remember that if this hole ever becomes clogged, it's possible that the backup will not work. Debris in the water can clog this hole, so cleaning it out with a nail is a good idea once in awhile. That is why it is important to do a functional check of the system quarterly to ensure proper operation.
It is advisable to discharge the water away from your house foundation. Proper drainage away from the house is important for a dry basement. Make sure all of the houses' downspouts are installed and follow a path of drainage away from the house. Window wells are another area of concern since water can collect in the wells and eventually cause water to enter the basement though the window.
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