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Wells & Drainage cost guide

Sump Pump cost in Illinois

Swapping a sump pump into an existing pit is one of the cheaper drainage jobs — it is mostly the pump plus an hour or two of labor. Costs climb when you need a brand-new pit (concrete cutting and a discharge line) or add a battery backup so the pump keeps running in a power outage, which is exactly when basements flood.

The direct answer · Illinois

Replacing a submersible sump pump in an existing pit in Illinois costs about $1,020, and typically runs $520–$1,920; a new pit or a battery backup adds more.

Model range

$520–$1,920

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$1,020

$520–$1,920 · Illinois

Submersible (in-pit, quieter) · Not included

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Viewing:Sump Pump

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Top 6 selected states by modeled typical sump pump cost.

Range Typical
Filtered state price comparison$0$0$1,000$1,000$2,000Illinois$1,020California$1,000New York$980Pennsylvania$920Texas$840Florida$840
Confidence
TexasTX$420$840$1,600measured
FloridaFL$410$840$1,580measured
PennsylvaniaPA$460$920$1,740measured
New YorkNY$500$980$1,850measured
CaliforniaCA$510$1,000$1,880measured
IllinoisIL$520$1,020$1,920measured

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This a submersible pump in an existing pit is shown for Illinois. Every row is priced by the same cost model that powers the calculator.

ComponentModeled rangeTypical
Sump pump unit (submersible)material$400
Installation labor (existing pit)labor$620
Total modeled range$520–$1,920

What changes the range

Cost drivers worth asking about.

01

Existing pit vs new pit

A straight pump replacement into a working pit is the cheapest scenario. Cutting a new pit means breaking the basement slab, setting a basin, and running a discharge line — that labor is the single biggest add-on.

02

Pump type

Submersible pumps sit in the pit, run quieter, and cost a bit more than pedestal pumps, whose motor sits above the water. Both are nationally priced hardware; the labor to install them is similar.

03

Battery backup

A battery backup keeps the pump running during the storms and outages that cause floods. It adds a second pump, a battery, and a charger — a worthwhile upgrade that adds to the total.

Common questions

The practical details.

How much does a sump pump cost in Illinois?

Replacing a submersible sump pump in an existing pit costs about $1,020 ($520–$1,920) in Illinois. Installing one in a brand-new pit runs about $1,940.

How much does it cost to replace a sump pump?

A like-for-like sump pump replacement is about $1,020 typical, $520–$1,920, because the pit and discharge line already exist — you are mainly paying for the pump and a short labor call.

How much does a sump pump with a battery backup cost?

Adding a battery backup brings a submersible install to about $2,020 ($960–$3,680). The backup keeps the basement dry when a storm knocks out power.

Is a submersible or pedestal sump pump cheaper?

Pedestal pumps cost a little less up front but run louder and sit above the pit. Submersible pumps cost slightly more and are quieter; the install labor is about the same.

Continue your research

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National view

National sump pump cost

How we estimate these costs: every number on this page is generated by our open cost model from published contractor pricing, then adjusted for state labor rates. Read the full methodology and data sources. Last reviewed 2026-08-15.