Field sheet · power-out insurance
Battery Backup Sump Pumps in North York
Storms that flood basements often knock out the power too. A battery backup keeps water moving while the main pump sits dark.
- Pumps sized to the lift, not guessed
- Every install bucket-tested before we leave
- Backwater and sump work done together
- Subsidy paperwork pointers where they apply
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- North York, Thornhill, Richmond Hill
Why backup matters
The heaviest summer storms in the GTA often bring lightning, wind and outages along with rain. A primary sump pump stops the moment the power goes. If water keeps arriving at the pit, a basement can flood within hours. A backup pump runs on a dedicated battery and starts automatically when the water rises above the main pump’s float.
- Homes with a history of outages during storms
- Finished basements or stored valuables
- Houses where the main pump runs often in spring
- Owners who travel and leave the house empty
How the system fits together
The secondary pump shares the pit, perched a few centimetres above the primary, with its own float and check valve. A charger keeps a deep-cycle or sealed battery topped up and sounds an alarm if the battery weakens or the backup runs. Both pumps typically share a single discharge line through a tee with check valves on each branch.
What installation includes
- Checking the pit has room for both pumps and floats.
- Mounting the backup pump and piping it to the discharge.
- Placing the battery and charger safely off the floor.
- Testing with the main pump unplugged to confirm the switchover.
Other options
Some homes suit a water-powered backup that uses city water pressure to lift water from the pit. These do not need batteries but consume house water as they run and require approved backflow protection. A generator is another route. We can explain the trade-offs for your house. See sump pump installation and basement flooding protection.
Questions we get about this
How many hours will a battery backup last?
Runtime is set by battery size and by the number of pump starts per hour. Light seepage can be handled for a long time. Heavy inflow drains a battery much faster.