How to Install a Battery-Operated Backup Sump Pump | This Old House

This Old House plumbing and heating expert Richard Trethewey shows how to keep a basement dry with a battery-operated backup sump pump—even when the power goes out. (See below for a shopping list and tools.)
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Shopping List for How to Install a Battery-Operated Backup Sump Pump:
– 110-volt sump pump with battery-powered backup sump pump
– check valve
– deep-cycle 12-volt marine battery with protective box
– Teflon tape
– 1_-inch-diameter PVC pipe and assorted fittings
– PVC primer and cement
– stainless steel hose clamps and hose-clamp connector

Tools for How to Install a Battery-Operated Backup Sump Pump:
– screwdriver
– handsaw
– utility knife

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How to Install a Battery-Operated Backup Sump Pump | This Old House
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View Comments

  • Is this always the case with basements? Do they tend to flood fairly often during stormy seasons?

  • Can I get a print out of the system parts so I can replace my noisy 3/4 horse power system.

  • A professional won't recommend a chicken power pump too small to handle sump high flow rate condition.

  • I used to watch this old house in the mid 80's with my dad on tv.

  • I just bought a home with a sump pump and after viewing your video I feel comfortable that I understand what I need to deal with it. I was anxious at first having never had a sump pump before. :-) Thank you for your vid!

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