Why Is My Sump Pump Running in Winter?
Many Winnipeg homeowners expect their sump pumps to stay quiet during the winter months. After all, once the ground freezes, there shouldn’t be much water to pump out, right?
But if you’ve noticed your sump pump still kicking in—even when temperatures are well below freezing—you’re not alone. This is a common issue, and there’s a simple explanation.
How Your Sump Pump Works in Cold Weather
Your sump pump’s job is to remove excess water from around your foundation, preventing flooding and moisture damage. While it runs frequently during rainy seasons, it can also activate in winter under certain conditions:
- Snowmelt during mild spells – If temperatures rise above freezing, accumulated snow can melt, leading to water buildup in your sump pit.
- High water table levels – If your home is in an area with a naturally high water table, groundwater may still seep into the sump pit even in winter.
In these cases, it’s normal for your sump pump to run occasionally. However, if it’s cycling on and off frequently—or running non-stop—there’s likely a problem that needs fixing.
The #1 Reason Your Sump Pump Won’t Stop Running in Winter
One of the most common culprits behind a constantly running sump pump in winter is a frozen discharge hose.
Most homeowners use a flex hose to direct pumped-out water away from the foundation. But when temperatures drop, any water left inside this hose can freeze, creating an ice blockage.
What Happens When the Discharge Hose Freezes?
- Your sump pump activates to remove water.
- The frozen hose prevents proper drainage.
- With nowhere for the water to go, the pump keeps running continuously.
- Over time, this can burn out the pump motor, leading to costly repairs or replacements.
How to Prevent a Frozen Sump Pump Discharge Hose
The good news? This problem is easy to prevent with a little preparation.
✔ Remove the flex hose before winter: Before freezing temperatures hit, detach and store the hose indoors. This prevents water from getting trapped and freezing inside.
✔ Use a winter discharge solution: If you need to keep a discharge hose attached, opt for a larger diameter rigid PVC pipe that’s less likely to freeze. Position it so it directs water away from your home.
✔ Clear any blockages immediately: If you suspect a frozen hose, disconnect it and clear out any ice buildup before reattaching it in warmer weather.
Need Professional Sump Pump Assistance?
If you’re unsure whether your sump pump is winter-ready or you suspect an issue, Shorty’s Plumbing & Heating Inc. is here to help. Our experienced Winnipeg HVAC technicians can:
✅ Inspect your sump pump for potential winter issues
✅ Ensure proper drainage and prevent freezing problems
✅ Provide expert heating and plumbing services to keep your home comfortable
Don’t wait until your sump pump burns out! Call us at 204-800-7456 or contact us online today.
