A pool skimmer is one of the most crucial components in your pool’s circulation and filtration system. Whether you're a DIY pool owner or someone scheduling professional maintenance, understanding the process of inground pool skimmer replacement is essential. A faulty skimmer can lead to water quality issues, inefficient filtration, and increased maintenance costs.

What Is a Pool Skimmer and Why It Matters

A pool skimmer is typically installed in the upper portion of the pool wall. Its function is to "skim" debris like leaves, insects, and dirt off the water's surface before they sink and cause water quality problems. The skimmer pulls water into the filtration system, helping to keep the pool clean and the water moving.

If your skimmer is cracked, leaking, or not pulling water efficiently, it may be time for a replacement. Replacing a skimmer can be a bit more involved than simple surface maintenance, but it’s a worthy investment in your pool’s long-term health.

Signs You Need an Inground Pool Skimmer Replacement

Not all skimmer issues require a full replacement — sometimes, a gasket or lid may be enough. However, there are certain signs that a full inground pool skimmer replacement is necessary:

Persistent Leaks

If water levels drop rapidly and you're constantly refilling your pool, the skimmer could be leaking. Hairline cracks or poorly sealed joints may be the culprit.

Ineffective Skimming

When the skimmer isn’t pulling in surface debris effectively, it may have internal damage or blocked plumbing that isn't easily repairable.

Visible Cracks or Damage

Skimmer bodies are often made from plastic or concrete. Over time, they can deteriorate due to UV exposure, pressure, or temperature fluctuations.

Poor Water Circulation

Skimmers contribute to the movement of water in the pool. If your pump seems to be struggling or the water looks stagnant, your skimmer may be malfunctioning.

Planning Your Inground Pool Skimmer Replacement

Replacing a skimmer is a labor-intensive process that involves cutting into concrete or the pool deck. It's important to plan carefully:

DIY or Professional Help?

If you're hady and comfortable with plumbing and concrete work, a DIY project is possible. However, for most pool owners, hiring a professional is the safer choice. A poorly installed skimmer can lead to leaks and structural damage.

Choosing the Right Skimmer

Make sure the replacement skimmer matches the type and size of your pool. Skimmers vary for vinyl, fiberglass, and concrete pools. Choose one compatible with your pool’s design and filtration system.

Step-by-Step Overview of the Replacement Process

Whether you're doing it yourself or hiring help, understanding the process helps you monitor the work and ensure everything is done correctly.

Drain the Pool Below the Skimmer

Start by lowering the water level to below the skimmer line to access the damaged unit safely.

Break the Concrete or Decking

The area around the skimmer must be opened. This typically involves cutting or chipping away concrete or tile.

Disconnect Plumbing Lines

Carefully disconnect the old skimmer from the plumbing system. Take note of pipe positions and connections for accurate re-installation.

Remove the Old Skimmer

Once the concrete is removed, extract the old skimmer. Clean the area thoroughly to prepare for the new installation.

Install the New Skimmer

Fit the new skimmer in place. Ensure it is level and positioned correctly. Use waterproof sealant to secure and seal it.

Reconnect Plumbing

Reconnect the skimmer to the filtration system using proper fittings. Test for leaks before sealing the concrete.

Refill and Test

Once everything is secure and the concrete has cured, refill your pool and test the new skimmer’s function.

Common Mistakes to Avoid During Replacement

Even seasoned DIYers can make errors when replacing an inground skimmer. Avoid the following:

Incorrect Alignment

Improper leveling or placement can cause surface water to bypass the skimmer altogether, defeating its purpose.

Using Wrong Materials

Always use pool-safe sealants and compatible plumbing materials. Household products may degrade in chlorinated water.

Not Testing Before Sealing

Never seal the area without pressure testing. Small leaks can be hard to detect later and may require redoing the work.

Post-Replacement Tips for Maintenance

A new skimmer is only as good as the care it receives afterward. Here’s how to extend the lifespan of your replacement:

Clean the Skimmer Basket Weekly

This prevents clogs and ensures proper water flow into the filtration system.

Inspect the Lid and Gasket

These components wear over time. Replace them as needed to prevent air leaks or safety issues.

Check for Leaks Periodically

Even a professionally installed skimmer can develop leaks due to pressure changes or wear. Regular checks help catch issues early.

Cost of Inground Pool Skimmer Replacement

The cost of replacing an inground pool skimmer varies widely:

• DIY Materials: $100–$300

• Professional Installation: $600–$1,500 or more depending on labor, pool type, and location.

It’s important to balance cost with quality. A cheaper job that fails can cost more in repairs later on.

When to Consider Upgrading Instead of Replacing

If your pool is older or you’re already renovating, you might consider upgrading your skimmer rather than simply replacing it.

Smart Skimmers

New models come with advanced features like built-in water level sensors or automatic chlorinators.

Dual Skimmer Systems

For larger pools, adding a second skimmer can improve circulation and reduce the load on your filter.

Final Thoughts on Inground Pool Skimmer Replacement

While inground pool skimmer replacement may seem daunting, it’s a manageable and worthwhile task that directly impacts your pool's cleanliness and efficiency. Whether you choose to DIY or go with a pro, understanding the signs, tools, and steps involved gives you the confidence to keep your pool running at its best.