Skip to content
OshawaPlumbers.ca

Sump Pump Repair in Oshawa

A sump pump sits in a pit in the basement floor and pumps out groundwater collected by the weeping tile around your foundation. It may sit idle for weeks and then run constantly during spring melt or a heavy storm. When it fails at the wrong time, the basement floods.

Common symptoms

  • The pump doesn't start when the pit fills
  • The pump runs constantly, even in dry weather
  • Loud grinding, rattling or humming
  • Water around the pit or along basement walls
  • The pump cycles on and off rapidly

Common causes

  • A stuck or tangled float switch
  • A burned-out motor or clogged intake screen
  • A frozen or blocked discharge line outside
  • A failed check valve letting water flow back into the pit
  • Power outage with no battery backup

Safe steps you can take now

  1. Unplug the pump before touching anything in the pit.
  2. Check that the float moves freely and isn't caught on the pit wall or cord.
  3. Pour a bucket of water into the pit to test that it starts and shuts off.
  4. Check the discharge outlet outside for ice, snow or debris.
  5. Keep a wet-dry vacuum handy during storms in case of failure.

When to call a qualified plumber

  • Water is rising in the pit and the pump isn't running
  • The motor hums but doesn't pump
  • The pump is more than several years old and you're unsure of its condition
  • You want a battery or water-powered backup installed

Typical repair options

Switch replacement

Replacing a faulty float or switch assembly.

Check valve replacement

Stopping backflow that makes the pump work harder.

Pump replacement

Installing a new primary pump sized for your pit and lift height.

Backup systems

Adding a battery backup pump or high-water alarm.

What affects the cost

Prices vary from job to job, so we don't publish fixed rates. These are the factors that usually make the biggest difference. Ask for quotes in Canadian dollars and confirm whether HST is included.

  • Pump type (pedestal vs submersible) and horsepower
  • Condition of the pit, lid and discharge line
  • Whether a backup pump or alarm is added
  • Electrical work needed for a dedicated outlet

Read more: How much does a plumber cost in Oshawa?

Oshawa context

Oshawa sits on the north shore of Lake Ontario, and spring snowmelt combined with rain is often when sump pumps work hardest. Testing your pump in late winter, before the thaw, is a good habit.

Frequently asked questions

How often should I test my sump pump?

A few times a year, and always before spring melt and after long dry spells. Pour water into the pit and watch a full cycle.

How long do sump pumps last?

Lifespan varies with use and quality. Many homeowners replace them proactively every several years rather than waiting for failure.

Do I need a battery backup?

If your area loses power during storms or your pump runs often, a backup adds protection when you need it most.

Why does my sump pump run when it hasn't rained?

High groundwater, a failed check valve, or a stuck float can all cause this. Have it checked if it runs constantly.

Request help with sump pump repair

Describe the issue and we'll get right back to you with next steps. It's free to submit and there's no obligation.

Request a Quote