Sump Pump Installation in Markham: What Homeowners Need to Know

Your sump pump is the single most important mechanical device in your basement. Most homeowners think about it for 10 minutes, when it fails. Here's what to know before that happens.

Capacity matters

For most Markham homes, a 1/3 HP cast-iron pump moving 2,500+ GPH is the minimum. Larger homes or high water tables: 1/2 HP.

Submersible vs pedestal

Submersibles sit IN the pit (quieter, last longer, better for finished basements). Pedestals sit above the pit (cheaper, easier to service). We almost always recommend submersibles.

The check valve

A small one-way valve on the discharge line. Without it, water drains back into the pit after each cycle and the pump runs constantly. Most failures we see are check-valve related, not pump-related.

Battery backup

Non-negotiable in Markham. Power outages happen during exactly the storms that flood your basement. Modern AGM-battery backups run 6–12 hours per charge.

Maintenance schedule

Test by pouring a bucket of water into the pit twice a year. Replace pump every 7–10 years before it fails. Replace battery every 5 years.

Get a free inspection in Markham

If you've noticed dampness, cracks, or musty smells in your basement, don't wait. We offer free on-site inspections across Markham, Unionville, Cornell, Berczy Village, Cathedraltown, Markville and Thornhill — and our work is backed by a written workmanship warranty.