Pool Skimmer Replacement

Replacing a pool skimmer is a bigger job than most pool owners expect — especially for in-ground pools. Knowing when full replacement is actually necessary, what it costs, and what’s involved helps you plan correctly and avoid spending $2,000 on a repair that a $20 gasket would have fixed.

Signs Your Pool Skimmer Needs to Be Replaced

Replace Parts Only

• Skimmer basket cracked or broken — replace basket ($5 to $25)
• Weir door (flap) missing or broken — replace weir ($5 to $20)
• Lid cracked — replace lid ($10 to $30)
• Gasket leaking at the throat — replace gasket ($10 to $40)

Full Skimmer Replacement Needed

• Skimmer body is cracked or visibly deteriorating and cannot hold a seal
• The joint between the skimmer and pool wall leaks persistently and cannot be resealed
• Skimmer pulls air or draws inadequately despite a clean basket and good pump flow
• The skimmer faceplate model has been discontinued and no replacement part is available

A dye test confirms the need: with the pump off, inject pool dye near the skimmer throat. If the dye is drawn into a gap rather than dispersing, you have an active leak at the skimmer body.

Pool Skimmer Replacement Cost

The large price gap for in-ground pools reflects labor complexity, not part cost. In-ground skimmer replacement involves cutting concrete coping, disconnecting plumbing, and replastering or recoating after installation. Above-ground pool skimmer replacement is a straightforward afternoon job for most homeowners.

Tools and Materials You’ll Need

For In-Ground Pool Skimmer Replacement

• New skimmer body (match existing brand if possible, or use a universal model)
• Skimmer gaskets and faceplate
• Pool putty or hydraulic cement
• PVC primer and cement
• Pipe wrench and channel-lock pliers
• Concrete saw or angle grinder (for concrete deck removal)
• Submersible pump (for draining below skimmer level)
• Screwdrivers (flathead and Phillips)

For Above-Ground Pool Skimmer Replacement

• New skimmer (model-specific or universal above-ground skimmer)
• Gaskets (usually included with new skimmer)
• Screwdriver or nut driver
• Vinyl liner patch kit (in case of liner tears during removal)

How to Replace an In-Ground Pool Skimmer (Step-by-Step)

Step 1: Turn Off the Pool Pump

Never attempt skimmer work with the pump running. Turn off the pump and filter system completely.

Step 2: Drain the Pool Below the Skimmer

Lower the water level at least 6 inches below the skimmer opening using a submersible pump or backwashing through the filter.

Step 3: Remove the Skimmer Basket, Lid, and Faceplate

Unscrew the faceplate from inside the pool. Remove the basket and weir door.

Step 4: Disconnect the Plumbing

Access the plumbing connections at the back of the skimmer body. Cut the PVC pipes as close to the old skimmer as possible. Photograph the configuration before cutting.

Step 5: Remove the Old Skimmer Body

For concrete pools, cut the coping and concrete deck around the skimmer perimeter using a concrete saw. Once removed, pry the skimmer body away from the pool wall.

Step 6: Clean and Prepare the Opening

Remove all old sealant, putty, and debris. Inspect the concrete or fiberglass shell for cracks around the opening.

Step 7: Install the New Skimmer

Apply pool putty or hydraulic cement around the flange of the new skimmer body. Press it firmly into the pool wall opening from outside. Align the screw holes with the faceplate holes inside the pool.

Step 8: Secure the Faceplate and Gaskets

From inside the pool, attach the gasket and faceplate. Tighten screws evenly in a cross-pattern to ensure uniform pressure and a watertight seal.

Step 9: Reconnect the Plumbing

Connect the new skimmer to the existing plumbing using PVC pipe, fittings, primer, and cement. Allow the cement to cure per manufacturer instructions — typically 24 hours before pressurizing the system.

Step 10: Refill and Test

Refill the pool to normal operating level, restart the system, and observe the new skimmer closely for leaks. Perform a dye test around the faceplate if concerned about the seal.

How to Replace an Above-Ground Pool Skimmer

1. Turn off the pump and lower the water level below the skimmer opening
2. Remove the screws holding the skimmer faceplate to the pool wall (they pass through the liner from inside)
3. Pull the skimmer body away from the outside of the pool wall
4. Position the new outer gasket between the new skimmer body and the pool wall (outside)
5. Place the inner gasket between the liner and the faceplate (inside the pool)
6. Thread screws through: faceplate > liner > inner gasket > outer gasket > skimmer body
7. Tighten evenly — overtightening can crack the skimmer or cut the liner
8. Restore water level and test for leaks before restarting the pump

Parts vs. Full Replacement — What Do You Actually Need?

• Broken basket ($5 to $25): Debris passes through to the pump. Replacement takes 30 seconds.
• Missing weir door ($5 to $20): Without the weir, skimming efficiency drops significantly. Turn off the pump and snap the new weir into the pivot points.
• Leaking gasket or sealant ($20 to $40): Most skimmer leaks are at the gasket or the putty joint — not the skimmer body itself. Reseal with pool putty or a skimmer seal kit.
• Throat extender: If the water level prevents proper skimmer draw, a throat extender adjusts the effective height without structural work.

DIY vs. Professional Installation

For above-ground pools, DIY is highly recommended. For in-ground pools, professional installation is the safer choice unless you have concrete cutting and PVC plumbing experience.