How often should you replace a well pump?
Updated July 2026
A submersible well pump lasts 8 to 15 years and a shallow-well jet pump about 8 to 10, so over the years you own a home on a well, expect to replace the pump once or twice. The quickest way to kill either one early is a waterlogged pressure tank that makes the pump short-cycle, flicking on and off dozens of times an hour. Replacement runs $800–2,500, and deep-well submersibles cost the most because the whole pump has to be pulled up out of the casing.
What changes the interval
| Your situation | Interval | Why |
|---|---|---|
| Submersible deep-well pump | 8–15 years | Runs cool downhole and cycles less, so it lasts longest |
| Shallow-well jet pump | 8–10 years | An above-ground motor and bearings wear faster |
| Waterlogged pressure tank (short-cycling) | Cuts life sharply | Rapid on/off starts burn motors and starting parts |
| Sandy or silty water | Nearer 8 years | Grit abrades the impellers and shaft seals |
| Frequent power surges, no protection | Shorter | Voltage spikes cook the motor windings |
| Right-sized pump, sound pressure tank | Toward 15 years | Long, steady run cycles are exactly what pumps like |
The cost of skipping it
What skipping it costs: a well pump rarely fails politely. It quits, and the entire house loses water at once, usually on a weekend. An emergency deep-well replacement is $1,200–2,500 (a shallow jet pump is $800–1,500), and a bad pressure tank left unaddressed will burn out the new pump too. Neglect turns a $200–450 tank into a multi-thousand-dollar chain reaction, which is why a yearly look at the system pays off.
How to do it (Pro job · budget $800–2,500)
- Learn the signs of a dying pump: sputtering faucets, dropping pressure, rapid cycling, or a spike in the electric bill.
- Check the pressure tank first, since a waterlogged tank is often mistaken for a failing pump and is far cheaper to fix.
- Confirm the well itself has water and the breaker and pressure switch are good before condemning the pump.
- For a deep-well submersible, hire a licensed well contractor: pulling hundreds of feet of pipe and wire is not a DIY job.
- Replace the pressure tank and pressure switch at the same time if they are original, so the new pump is not fed by worn parts.
- Keep the well log and pump specs on file, and set a reminder to test the system yearly so the next failure is planned, not a surprise.
Knowing the interval is the easy half. OnOtto reminds you at the right interval, and it won't let you snooze it into next year. Tasks persist until they're done, and completing well pump replacements schedules the next one automatically.
Put this on autopilot, free for 30 daysFrequently asked questions
What are the warning signs a well pump is about to fail?
Faucets that spit air and sputter, water pressure that fades or swings, the pump running constantly or cycling on and off rapidly, muddy or sandy water, and a jump in your electric bill from a motor working overtime. A tripping breaker on the pump circuit is another red flag. Any of these means get the system checked, because a pump that dies with no warning leaves the whole house without water until a contractor can respond.
Can I replace a well pump myself?
A shallow-well jet pump sits above ground in the basement or a pit and is a realistic advanced-DIY job. A deep-well submersible is not: it hangs on hundreds of feet of pipe and wire inside the casing, needs specialized pulling equipment, and one dropped pump can mean a failed well. For submersibles, hire a licensed well contractor. Even on a jet pump, it is worth having a pro confirm the diagnosis so you do not replace a good pump.
Why do deep-well pumps cost so much more to replace?
The pump itself is a modest part of the bill; the labor is the difference. A deep-well submersible may hang 100 to 400 feet down, so the crew has to pull all that pipe, wire, and the pump up out of the casing, often with a truck-mounted hoist, then lower a new assembly and rewire it. A shallow jet pump bolts up in an accessible spot, so it runs $800–1,500 against $1,200–2,500 for a deep-well swap.
Does a bigger, more powerful pump last longer?
No. An oversized pump often lasts a shorter life, not a longer one, because it fills the pressure tank too fast and short-cycles, and rapid starts are what wear pumps out. Correct sizing to the well's depth, flow rate, and household demand is what matters. A right-sized pump paired with a properly charged pressure tank runs in long, steady cycles and reaches the top of its lifespan range.