Sump pump replacement cost
We are not going to invent a national average for you. Here is what the price is actually made of, so you can read a quote properly.
What we can do is tell you exactly what the cost is made of, so that when you do get a quote you can see whether it is reasonable and what is driving it.
The four variables
| Variable | Low end | High end |
|---|---|---|
| The pump itself | Budget thermoplastic | Premium cast iron with a dual switch |
| Who fits it | DIY, existing pit, like-for-like | Plumber, out of hours, during a flood |
| What else is replaced | Pump only | Pump, check valve, switch, discharge modifications |
| Scope | Swap in an existing pit | New pit cut into the slab with a new discharge run |
The gap between the cheapest and most expensive version of this job is very large — easily an order of magnitude — and almost all of it is scope rather than hardware.
What a reasonable quote includes
- The pump, named by model, so you can look up its specification rather than accepting a horsepower figure.
- A new check valve. A quote that reuses the old one is cutting a corner that produces a callback.
- Pit cleaning, which should be part of the job and often is not mentioned.
- Testing, with the installer present for a full start-and-stop cycle.
- Disposal of the old pump.
Zoeller M53 Mighty-Mate
The common mid-market cast-iron choice, and a sensible benchmark for the hardware cost.
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| Type | Submersible, cast iron |
|---|---|
| Horsepower | 3/10 HP (sold as 1/3 HP) |
| Electrical | 115 V, 9.7 A, 60 Hz |
| Discharge | 1-1/2" NPT vertical female |
| Switch | Integral vertical float, on at 7-1/4", off at 3" |
| Solids handling | 1/2" |
| Shut-off head | 19.25 ft |
| Flow, by lift | 2,580 GPH at 0 ft · 2,040 GPH at 10 ft |
| Warranty | Three years |
Check the live price rather than any figure typed into an article — including ours.
What it gets right
- Cast iron
- Stocked everywhere
- Published performance
Where it falls short
- Heavy
- Needs pit width
Specifications from Zoeller M53 (53-0001) specification sheet.
Superior Pump 92341
Cast iron at a lower price, for a secondary pit or a tight budget.
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| Type | Submersible, cast iron |
|---|---|
| Horsepower | 1/3 HP |
| Electrical | 120 V, 4.1 A |
| Discharge | 1-1/2" |
| Switch | Vertical float |
| Motor | Continuous duty, thermally protected split capacitor |
| Flow, by lift | 2,760 GPH at 0 ft |
| Warranty | Three years |
The honest low end of the hardware range without dropping to a pump we would not fit.
What it gets right
- Cheap for cast iron
- Three-year warranty
Where it falls short
- No published flow curve
- Thinner support
Specifications from Superior Pump 92341 specification listing.
Where you can genuinely save
- Do it before it fails. Emergency work during a storm is the most expensive version of this job, and the pump selection is whatever is in the van.
- Supply your own pump, if the installer allows it. You get to choose the model and check the specification yourself.
- Do the like-for-like swap yourself if the pit is accessible and the electrical work is unchanged. See how to install a sump pump.
- Replace the valve and switch yourself between pump replacements. Those are the parts that fail most and they are the easiest jobs.
Questions people ask
How much does it cost to replace a sump pump?
It depends on the pump, who fits it, what else is replaced and whether a pit already exists. We do not publish figures because they vary too much to be useful; get two local quotes and compare the scope line by line.
Is it cheaper to replace a sump pump myself?
Substantially, if the pit is accessible and the swap is like-for-like. The hardware is the same; you are saving the labor, which is usually the larger half.
Does homeowners insurance cover sump pump replacement?
Generally not for wear and tear. Some policies offer a water-backup endorsement that covers damage from a failure, but not the pump itself. Check your own policy wording.
Should I replace the check valve too?
Yes, always. It is as old as the pump that failed, it costs very little, and a tired valve makes a brand-new pump behave as if it is faulty.
Sources
Read next
How to install a sump pump
A like-for-like replacement in an existing pit is a two-hour job. Cutting a new pit into a slab is not, and this page is honest about which is which.
How long do sump pumps last?
Seven to ten years is the honest range. What decides where you land in it is duty cycle, pit size and the switch — not the badge.
The best sump pumps, ranked by what they move at real lift
Five pumps that cover almost every residential pit, compared on the number that matters: how much water they move at the height your basement actually needs.
Basement waterproofing cost
The range runs from two downspout extensions to a full excavation. Understanding which end you are at is worth more than any national average.
The best sump pump check valves
A forty-dollar valve is the single most common reason a healthy pump appears to be failing. It is also the easiest thing in the pit to replace.