Same-day & emergency service available · Serving Minneapolis–St. Paul

Loon Plumbing

Sump pump repair & replacement in Minneapolis – St. Paul

Free estimates · Repairs, replacements & battery backups

In Minnesota, the sump pump is all that stands between the spring melt and your finished basement. We repair it, replace it, and back it up — before the storm, or the same day one finds you.

  • 5.0 on Google
  • MN License PM652496
  • Family-owned · 6 years
PhotoTech in Loon uniform lowering a new cast-iron sump pump into a clean pit, battery backup unit alongside

How it works

What every sump pump visit includes

  1. Pit-to-discharge inspection

    Pump, float, check valve, pit condition, and where the discharge line actually sends the water — the whole system, because any one link can flood the basement.

  2. A written price you approve

    One flat-rate number — pump, parts, and labor — before anything comes out of the pit. It doesn't change after you say yes.

  3. The right pump, sized right

    Horsepower matched to how fast your pit fills and how high it has to lift — not the biggest unit on the shelf. We'll give you the honest cast-iron-versus-plastic conversation too.

  4. Tested with real water

    We fill the pit and watch full cycles — float rising clean, check valve holding, water leaving the house where it should. You see it work before we do.

  5. A backup plan you understand

    What happens when the power fails, what a battery backup costs, and how long it runs — explained straight, so the choice is yours and an outage is never a surprise.

And if something's not right after we leave? We come back and make it right — no charge, no argument. That's the Loon Promise.

Warning signs

Six signs your pump is close to quitting

It runs constantly — or kicks on every few minutes

Constant running points to a stuck float, a failed check valve letting water fall back into the pit, or a pump undersized for the water your pit actually sees. Short-cycling burns motors out fast. Either way, the pump is working overtime toward an early death, and it's worth a look now.

Grinding, rattling, or a loud thud from the pit

Grinding usually means the impeller has picked up debris or the bearings are going. That single loud thud after each cycle is the check valve slamming — annoying, and hard on the pump. Noises are how sump pumps ask for help; silence during a storm is how they quit.

It's seven or more years old

Most sump pumps last about 7–10 years, and they rarely announce the end — they just don't start one day, usually during the exact storm you needed them for. Past that age, replacing on your schedule beats replacing on the weather's.

The float is jammed — or the pit never has water

A float wedged against the pit wall or tangled in its cord simply won't trigger, which is a fine pump acting like a dead one. And a pit that's always bone dry deserves one honest check: sometimes it means great drainage, sometimes it means the pump or drain tile isn't doing anything at all.

There's no backup for when the power goes out

The storms that flood basements are the same storms that knock out power — and a primary pump with no electricity is a bucket. A battery backup runs for hours through an outage and takes over if the primary fails. For a finished basement, it's the cheapest insurance in the house.

The discharge line freezes, or dumps beside the foundation

A very Minnesota pair of problems. A discharge line that freezes into an ice plug leaves the pump pushing against a wall until it burns out — usually in that January thaw. And a line that dumps next to the house just recirculates the same water back into the pit. Both have straightforward fixes.

Honest options

Repair it, or replace it before it matters?

When a repair makes sense

A newer pump with a stuck float, a failed check valve, a discharge line that needs rerouting or a freeze guard — honest repairs that cost a fraction of a new unit. If that's all yours needs, that's all we'll quote.

When replacement is the smarter call

A pump past seven years, a tired motor, or a unit that was never sized for your water — especially if it guards a finished basement. A new pump is cheap insurance next to soaked carpet and drywall, and we'll show you that math rather than just assert it.

And if the pump checks out fine, we'll say so — a dry basement is the whole point, not the sale.

Upfront pricing

You'll know the exact price before we start

"What does a new sump pump cost?" depends on the pump that fits your pit, whether the check valve and discharge line are worth keeping, and whether a battery backup joins it — which is why we look first and quote your basement, not an average. One flat-rate price in writing, approved before the old pump comes out, and the invoice matches it. Always.

From our neighbors

5.0 on Google

“Our pump died on a Friday night in April, mid-downpour. By Saturday morning they had a new one in with a battery backup — the basement never took a drop.”

— Paul S., Champlin

Good to know

Sump pump questions, answered straight

How long do sump pumps last?

About 7 to 10 years for a decent pump, less if it runs a lot or short-cycles. Cast-iron pumps generally outlast plastic ones. If yours is in that age range and guards anything you'd hate to lose, the honest advice is to replace it proactively — a pump costs far less than one soaked carpet pad.

Do I really need a battery backup?

If the basement is finished, our honest answer is yes. Outages and heavy rain arrive together, and a backup buys you hours of pumping when the power — or the primary pump — fails. If the basement is bare concrete and you're comfortable with some risk, we'll tell you that too instead of scaring you into one.

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

Usually a high water table — very common across the metro, especially during the spring melt when weeks of snow soak into the ground at once. Sometimes it's grading or a downspout feeding water back toward the foundation, and occasionally it's just a stuck float. We'll tell you which yours is.

How do I test my pump before the spring melt?

Pour a five-gallon bucket of water into the pit. The float should rise, the pump should kick on, move the water out quickly, and shut off cleanly — no grinding, no repeat cycling, no thud. If any of that doesn't happen, that's your cue to call while it's still a scheduled visit and not a wet emergency.

What size pump do I need?

Sized to your pit and your water, not the biggest one on the shelf. An oversized pump short-cycles itself to death; an undersized one loses the race in a downpour. We look at how fast your pit fills and the height it has to lift, then match the horsepower — and we'll tell you our reasoning with the quote.

My pump just died and it's pouring. Can you come today?

Call us — this is exactly what our same-day and emergency service is for. While you wait: unplug the pump, check nothing is jamming the float, and plug it back in. If it's truly done, we'll get a new one moving water as fast as we can get there.

Request service

Tell us about your sump pump

Send the form and we'll call you back — usually within the hour during business hours. In a hurry or standing in water? Skip the form:

(612) 445-6346

Same-day & emergency service available.

Call (612) 445-6346Request service