Well and pump service costs depend on your project and location. Check with a local pro for your specific job.
Well pressure tank replacement costs $300 to $700 on average, but your final total depends on tank type, capacity, and labor rates.
The tank type you choose changes your project costs, with one-compartment models costing less and large all-metal diaphragm tanks costing more.
Remember to account for well pump replacement at around $1,900 if your pump fails during the tank replacement project.
Hiring a local well pump repair service professional ensures your tank is installed correctly and keeps your household safe from heavy lifting injuries.
Well tank replacement costs hover around $500 but vary from $300 to $700 based on the tank type, size, and location. In some cases, costs go up to $2,500 for large or difficult-to-reach tanks. Expect to pay $10 to $15 per gallon when choosing a tank size.
A well pressure tank does a lot more than simply hold water for when you need it. It’s also responsible for holding pressurized air so you can actively pump well water into your home when it's time to wash dishes or take a shower. Below are the cost considerations you need to know as you plan this project.
A key factor when choosing a well pressure tank is determining the type of compartments you want. Most well pressure tanks use two compartments to separate the water from the compressed air, but there are options where they combine together.
| Well Pressure Tank Type | Average Cost |
|---|---|
| Diaphragm | $200–$2,500 |
| Bladder | $150–$1,500 |
| One-compartment | $100–$300 |
Diaphragm well tanks are a relatively common type of tank because of their efficiency. Diaphragm pressure tanks utilize an internal membrane (also called a bladder) to separate the water on the top from the air on the bottom. This membrane is welded shut, preventing any air from escaping.
Most individuals pay around $200 to $500 for a new diaphragm well pressure tank, but the cost can be upward of $2,500 for large well pressure tank sizes (such as 120 gallons) and if you switch out vinyl materials for all metal.
Bladder well pressure tanks are nearly identical to diaphragm pressure tanks, except the bladder inside has screws holding it in place rather than being welded in. This leads to an easier-to-replace inner mechanism but at the cost of potentially losing efficiency when air escapes.
Because of their slight downgrade in performance, expect to pay around $150 to $400 for a bladder well pressure tank. These tanks can reach upward of $1,500 for larger sizes.
Unlike diaphragm and bladder well pressure tanks, one-compartment well pressure tanks don’t separate the water from the air. While this eliminates a point of failure within the well pressure tank system, it does increase the chance of waterlogging. Waterlogging happens when too much water and air mix in the tank, diluting each other.
One-compartment well pressure tanks cost $100 to $300 on average.
Beyond the type of tank, you’ll want to consider the capacity. You’ll also need to pay someone to hook up the pressure tank.
| Well Pressure Tank Cost Factors | Average Cost |
|---|---|
| Capacity | $10–$15 per gallon |
| Labor | $125–$200 |
| Well pump replacement | $1,900 |
Well pressure tanks are measured in the number of gallons of water they can hold. The smallest well tank is a 20-gallon option, with the largest ones reaching 120 gallons. Depending on the brand and type of pressure tank, you'll pay anywhere from $10 to $15 per gallon.
You’ll need to hire a handyperson or local plumber to tackle this job. A plumber's cost to replace a well tank ranges from $125 to $200. However, they may charge more if your pressure tank is in a hard-to-reach area.
A well pressure tank is one part of a well pump system. If there are any other problems, such as the pump failing, there are extra costs you’ll need to tack on. The average cost of replacing a well pump is around $1,900.
"Get your well water sampled at a lab every year. You always want to know what is in your water and how good it is."
— Constantin Geambasu, Owner of Water Rehab, Gilbert, Arizona
Two types of location issues can increase the cost of replacing the well pressure tank. First, it costs more to replace a tank in areas with a higher cost of living. Expect labor costs, the cost of the tank, and additional hardware to fall on the higher end of the cost range.
Second, labor costs may also be higher if the tank’s location is difficult to access. Accessibility issues may increase the hourly rate or cause the project to take longer, increasing the final cost.
To save a few pennies down the road, use these tips:
Opt for a larger well pressure tank than your current one. This will cut down on the cost per gallon. Plus, you may not need to replace it as often.
Prioritize good warranties when shopping for a tank. This protects you against having to pay for a costly pressure tank twice in a short amount of time.
Hire a professional for installation. Trying to DIY this job without experience can lead to a lot of costly mistakes. Don’t overestimate your abilities. This is a very detail-oriented job.
Replacing a well pressure tank is not a job for the average DIYer. Unless you actually have years of experience in wells and tanks, leave this one to a pro. These tanks can be heavy, and the pros know how to move them into place safely without causing injury.
Contact a well pump repair pro near you to install a new well pressure tank. Having the tank installed safely and correctly is worth the investment.
Installing a well pressure tank is a job best left to experienced professionals. Here’s why:
Hiring a pro ensures your project complies with local plumbing codes, well regulations, and safety standards.
DIY installations can lead to leaks, system damage, and costly repairs.
Professionals know how to properly size, install, and secure a well pressure tank.
Experienced pros can complete the job safely and quickly, saving you time and stress.
Discuss with your pro which type of tank, such as a diaphragm, bladder, or one-compartment, best fits your budget and household needs.
Explain the desired location of your tank and provide your pro with an idea of the layout.
Ask about add-ons such as pressure switches, pump upgrades, and water filtration systems.
Discuss any well pressure system repairs, electrical problems, or plumbing concerns with your pro.
Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We extensively research project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We rely on reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
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