Sump pump repair and installation in Chelmsford
A sump pump moves groundwater out of a basement pit before it reaches the floor. When it fails, usually during heavy rain or a fast thaw, the basement can flood within hours. Our emergency sump pump service in Chelmsford runs 24/7, and we repair, replace and install pumps and backups.
If your sump is not running and water is rising, check that the pump is plugged in and the breaker is on. Lift the float to see whether the pump starts. If it does not, call. While you wait, move items off the floor and do not enter flooded areas with live electrical equipment.
A pump is a mechanical part, and mechanical parts fail. A backup, battery or water-powered, is what protects you when the main fails or the power goes out.
Sump pump failed: what to do
Why pumps fail
- Stuck or tangled float switches.
- Burnt-out motors from age or constant running.
- Clogged intake or check valve.
- Power outages with no backup.
- An undersized pump for the amount of water.
Repair, replace or add a backup
| Option | Best for | Notes |
|---|---|---|
| Repair | Stuck float, clogged intake | Quick when the pump is sound |
| Replace | Pumps near the end of their life | A new pump resets the clock |
| Battery backup | Areas with power outages | Needs a battery check |
| Water-powered backup | Homes on municipal water | Uses municipal water supply, check local rules |
Water rising in the basement?
Call now.
Discharge and where the water goes
Sump discharge must go outside, away from the foundation. It should never be connected to the sanitary sewer line. Check valves keep pumped water from returning to the pit, and frost can freeze outdoor discharge, so slope and termination matter.
If wet basements are a recurring issue, see basement waterproofing for the larger fix.
What sump pump service costs
Standard homeowner policies often exclude groundwater flooding unless an endorsement exists. Ask your insurer. For your number, call (855) 575-2890.
Testing your pump before the storm
- Check the powerMake sure the pump is plugged into a working outlet, ideally a GFCI.
- Pour in waterFill the pit with a bucket until the float rises.
- Watch the cycleThe pump should start, empty the pit and shut off cleanly.
- Look at the dischargeConfirm water leaves the pipe outside and does not drip back.
- Test the backupIf you have a battery backup, switch to it and check it runs.
Do this every few months and before spring thaw. A pump that struggles in a test will fail in a storm.
Warning signs that a pump is near the end
- It runs without stopping even in dry weather.
- It makes grinding, rattling or humming noises.
- The float sticks or fails to rise.
- Rust or heavy sediment shows in the pit.
- It is more than a decade old.
Replacing a pump on your schedule beats replacing it at two in the morning. A new pump is usually a short job, and the old one can be checked for cause so the new one lasts longer. See basement waterproofing if the pit fills too often.
Serving Chelmsford and nearby
We serve Chelmsford and Billerica, Lowell and Tyngsborough, where the Merrimack and Concord rivers shape local drainage. Spring melt and heavy storms are when pumps work hardest.
Sump Pump Installation & Repair questions from Chelmsford homeowners
Yes. The line is open 24/7. A failed pump with rising water is dispatched as an emergency.
Many last around ten years, depending on use.
A backup is a good idea for any basement that matters to you.
Outside, away from the foundation, never to the sewer.
A stuck float, a failed check valve or high groundwater.
Replacing or adding piping can require one, so we check with the town.
Keep the basement dry.
Call the 24/7 line in Chelmsford.