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Well pump size and replacement cost estimator

Answer six short questions and get a pump size in horsepower and gallons per minute, plus an installed cost range with each line. Most submersible pump replacements run $1,500 to $4,000 installed, and cost climbs with depth because the pipe and wire come up with the pump. It is an estimate, not a quote.

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Step 1 of 6

Why do you need a pump?

Installed cost by depth

Well depthPumpInstalled
Up to 25 ftShallow well jet pump$800 to $2,000
25 to 100 ftDeep well jet pump or submersible pump$1,200 to $2,500
100 to 200 ftSubmersible pump$1,500 to $3,000
200 to 300 ftSubmersible pump$2,000 to $4,000
300 to 400 ftSubmersible pump$2,800 to $5,500
400 ft or deeperSubmersible pump$4,000 to $8,000+

National figures before the regional band. A constant-pressure system adds $800 to $2,000.

How much flow a home needs

Penn State Extension's minimum flow, in gallons per minute, by bedrooms and bathrooms. A blank cell has no figure; the tool uses the closest one.

Bedrooms1 bath1.5 bath2 bath3 bath
26 GPM8 GPM10 GPM
38 GPM10 GPM12 GPM
410 GPM12 GPM14 GPM16 GPM
513 GPM15 GPM17 GPM
616 GPM18 GPM

How the estimate works

  1. Say why you need a pump. A pump that died, an upgrade, or a pump for a new well. A new well adds a pressure tank to the job.
  2. Pick the pump type. A jet pump sits above ground, a submersible hangs down inside the well, and a constant-pressure system adds a controller that keeps pressure steady. Not sure? Pick that and the depth decides.
  3. Give your state, well depth and water level. The state sets the regional price band. Use the driller's record or your lookup for depth. For wells 25 to 100 ft deep, the depth to water helps decide between a jet pump and a submersible.
  4. Describe your home. People, bedrooms and bathrooms set the flow you need, from Penn State Extension's table. Six or more people counts as high demand, which the guide sizes at 1 HP or larger.
  5. Say how soon. No water today means after-hours or weekend rates, which the guide puts at 25 to 50 percent more.
  6. Read the result. You get a pump type, horsepower, gallons per minute and an installed cost range with each line.
  7. Get a written quote. Ask a local well pro for a quote that names the pump, pipe, wire and labor.

Questions

How much does it cost to replace a well pump?

The Well Guide (October 2026) puts a submersible pump at $1,500 to $3,000 installed for a well 100 to 200 feet deep, $2,000 to $4,000 at 200 to 300 feet, and $2,800 to $5,500 at 300 to 400 feet. Deeper wells run $4,000 to $8,000 or more.

What size well pump do I need?

The Well Guide says wells under 200 feet typically use a 1/2 HP pump, wells 200 to 300 feet use 3/4 HP, and wells deeper than 300 feet or homes with high water demand use 1 HP or larger.

How many gallons per minute does my house need?

Penn State Extension suggests at least 6 GPM for most single-family homes. Its table runs from 6 GPM for 2 bedrooms and 1 bathroom up to 18 GPM for 6 bedrooms and 3 bathrooms. A garden hose adds about 5 GPM while it runs.

What does emergency or weekend pump service cost?

The Well Guide says emergency, weekend or after-hours service adds 25 to 50 percent. Its example: a $2,500 weekday job could reach $3,500 or more on a Saturday.

Shallow well pump or submersible?

A shallow well jet pump suits a well of 25 feet or less and costs about $800 to $2,000 installed (The Well Guide $800 to $1,800, PlumberCalc $1,000 to $2,000). A deep well jet pump costs $1,200 to $2,500 for wells 25 to 100 feet. Past about 100 feet a submersible pump is the standard.

What does a constant-pressure system add?

The Well Guide says a constant-pressure (variable speed) system adds $800 to $2,000 to the standard cost.

Why do prices differ by region?

The Well Guide says labor rates and regional market conditions affect total cost meaningfully. It puts the Northeast 15 to 30 percent above the national average and the Midwest 10 to 15 percent below. The Pacific Northwest runs 20 to 35 percent above and California 25 to 40 percent above.

Is this a quote?

No. It is a rough planning estimate built from two published cost guides, The Well Guide and PlumberCalc. Pump brand, pipe and wire condition, access to the well, and your contractor's rates all change the price. Ask a licensed well pro for a written quote.

Go deeper

Ready for a number you can plan on? Have a pump pro reach out.

Add this estimator to your site

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Sources

The regional bands turn the guide's wording (for example "at or slightly above average") into numbers. They are our reading, so treat the range as a planning estimate.