Well Pump and Pressure Tank Replacement Cost

Replacing a well pump and pressure tank together typically costs $1,000 to $2,500 installed in 2026, compared to $800 to $1,600 for the pump alone and $300 to $700 for the pressure tank alone. Bundling both at one service visit saves a second service call fee and is usually the right financial decision when the pump is being replaced and the tank is over 8 years old. Use our well pump and pressure tank cost calculator to get a combined estimate for your setup.

Well pump and pressure tank replacement cost

Why well pump and pressure tank often fail together

Your well pump and pressure tank work as a team. The pump draws water from the well; the pressure tank stores it under pressure so the pump does not have to cycle on every time you open a tap. When the pressure tank bladder fails, the pump short-cycles rapidly, putting far more wear on the motor than normal operation. A pump that has been short-cycling for months due to a failed tank often reaches the end of its life much sooner than expected. The two components also share a similar lifespan of 10 to 15 years, which is why they tend to need replacement around the same time.

Pressure tank cost breakdown

A residential pressure tank (also called a bladder tank or captive-air tank) costs $80 to $400 for the unit, depending on capacity. Standard residential tanks run 20 to 44 gallons and cost $120 to $250 at supply houses. Installation adds $150 to $350, since the plumber or well contractor must drain the system, cut and reconnect lines, set the precharge pressure, and test the system. Total pressure tank replacement cost: $300 to $700.

Signs you need a new pressure tank

• Rapid short-cycling. Pump turns on and off every few seconds rather than holding pressure for minutes between cycles.
• Waterlogged tank. Tank feels heavy and water flows immediately when you tap the Schrader valve with no air precharge present.
• Visible rust or corrosion on the tank shell, especially near welds or fittings.
• Tank age over 10 to 12 years. Bladder tanks have similar lifespans to well pumps and often wear out together.

What size pressure tank do I need?

Sizing depends on pump horsepower and household demand. A 0.5 HP pump serving two to three bathrooms typically needs a 20 to 32-gallon tank. A 1 HP pump serving a larger home may need 44 gallons or more. An undersized tank causes rapid cycling even with a healthy pump, shortening pump life. Your contractor should verify the correct gallon capacity for your household demand and specify it in the quote rather than simply replacing the existing tank size without checking whether it was correctly sized.

When to replace both at the same time

If your pump needs replacement and the pressure tank is more than 8 years old, replacing both makes financial sense. The marginal cost of adding a new pressure tank when the contractor is already on-site, the system is already drained, and the labor is already billed is much lower than a second standalone tank replacement job a year or two later. Ask your contractor for a combined quote and compare it to the pump-only quote plus a future tank estimate. The math almost always favors bundling.

Can I replace only the pressure tank and skip the pump?

Yes, if the pump is still healthy. A failed tank bladder is a common standalone repair that does not require touching the pump. The contractor should assess both components at the service visit to confirm the pump is healthy before leaving. A contractor pulling the tank will inevitably check pressure and cycle performance, so you will know the pump's status before any money is spent.

Does replacing the pressure tank fix low water pressure?

It depends on the cause. A waterlogged tank can cause pressure problems, and replacing it often restores normal pressure. If the pump itself is worn and unable to build adequate pressure, replacing only the tank will not fix the issue. A contractor can diagnose which component is causing the symptom with a few simple tests before recommending the correct repair.

Frequently asked questions

How long does a pressure tank last? Most residential bladder pressure tanks last 10 to 15 years. Tanks in areas with highly corrosive water chemistry may fail sooner. A tank that is short-cycling heavily due to a low precharge pressure can sometimes be restored by recharging the air bladder via the Schrader valve, extending its life if the bladder itself is still intact.

Is there a difference between a pressure tank and a storage tank? Yes. A pressure tank uses an internal air bladder to maintain system pressure and prevent short-cycling. A storage tank simply holds a reserve volume of water. Most residential well systems use pressure tanks, not storage tanks.

Can I replace a pressure tank myself? Replacing a pressure tank is a surface-level job with no well pulling involved, which makes it more DIY-accessible than submersible pump work. You need to shut off power to the pump, drain the system, remove the old tank, install the new one, set the precharge pressure, and test. Confirm local permit requirements and consult your contractor if you are unsure about sizing.

Bottom line

A combined well pump and pressure tank replacement costs $1,000 to $2,500 installed, less than two separate service visits for most homeowners. If your pump is being replaced and your tank is past mid-life, bundling both makes economic sense. Use our cost calculator to compare scenarios, and get quotes from a licensed well pump contractor who will assess both components before the job begins.

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