How Much Does It Cost to Replace a Pool Skimmer?

How much does replacement cost for different pool types?

The total price to swap out a broken pool skimmer depends almost entirely on how your pool was built. A replacement skimmer on an above-ground pool usually runs between $50 and $300. In contrast, an in-ground pool skimmer replacement typically costs between $1,500 and $4,000. When workers must break through decorative masonry, match custom stone, or dig through deep concrete footings, invoices can climb beyond $5,000.

Above-ground pools are the easiest and cheapest to fix. The skimmer housing hangs on the outside of the thin pool wall, held in place by a faceplate and a dozen stainless steel screws. You can buy a standard replacement kit for under $60 at most pool supply stores. If you hire a local pool maintenance technician to do the swap, labor usually adds $100 to $200 for an hour or two of work.

In-ground vinyl liner pools sit in the middle of the price scale, typically costing between $1,200 and $2,500. The skimmer box sits behind the steel or polymer wall panel, but it is often poured into a small concrete support collar. A technician must carefully take off the faceplate without tearing the vinyl, disconnect the underground pipe, and secure the new unit with fresh water-tight gaskets. If the surrounding deck is narrow or made of loose pavers, the labor stays closer to the lower end of that range.

In-ground gunite (sprayed concrete pool shell) pools carry the highest repair bills, almost always landing between $1,500 and $4,000 per skimmer. Gunite pools are built to last for decades, which means the skimmer is literally encased in concrete, steel rebar, and backfilled soil under a heavy patio slab. Replacing one requires heavy demolition equipment, plumbing surgery, and concrete pouring. If you recently looked into how long to water a new gunite pool, you know how dense and rigid cured concrete becomes over time, making any excavation difficult.

In-ground fiberglass pools generally run from $1,500 to $3,500 for a full replacement. Fiberglass pool shells are flexible and ship from the factory with pre-cut holes. When workers dig around a fiberglass skimmer, they must be gentle to avoid cracking the surrounding fiberglass gelcoat or flexing the wall. Just as structural depth matters when evaluating how deep an inground fiberglass pool can be, the thickness and layout of the fiberglass collar determine how much labor is required to free the old housing.

The surprising fact for most pool owners is that the physical skimmer unit is cheap. A commercial-grade, heavy-duty plastic skimmer housing costs between $75 and $250 at wholesale cost. The remaining 85% to 90% of your bill pays for manual labor, diamond saw cutting, jackhammer operation, underground plumbing, soil removal, and patio restoration.

Why does an in-ground skimmer replacement cost so much?

The primary reason an in-ground skimmer replacement is so expensive is deck demolition. Builders design swimming pools so the skimmer stays completely hidden beneath the finished concrete patio. That looks clean when your backyard is finished, but it turns a simple plumbing fix into a major masonry project when parts fail.

To reach the damaged skimmer body, a crew must first outline a section of your deck, usually measuring at least 3 feet by 3 feet, directly above the skimmer. They use a wet diamond-blade concrete saw to score the perimeter, followed by a heavy pneumatic jackhammer to shatter four to six inches of reinforced concrete. This process generates massive amounts of noise, dust, and rubble that must be hauled away by hand in wheelbarrows.

Once the concrete slab is broken and removed, the crew faces several cubic feet of compacted dirt, pea gravel, and crushed stone. Workers cannot simply dig with a backhoe because the main suction pipes, electrical bonding wires, and return lines run directly through that dirt. The excavation must be done slowly with shovels and hand trowels to avoid puncturing healthy PVC lines or hitting copper grounding wire.

Plumbing complexity adds another layer of cost. The bottom of the skimmer throat (the water opening in the pool wall) connects directly to an underground plumbing line that runs all the way back to your pump equipment pad. If freeze damage or soil shifting cracked the skimmer, that crack often extends into the threaded pipe fitting beneath the housing. Technicians must cut away the old pipe, glue in fresh unions and sweep elbows, and confirm everything is watertight before any dirt goes back into the hole.

Patio reconstruction is the final cost driver, and it often frustrates homeowners the most. Pouring a fresh batch of gray concrete into a three-foot square hole leaves a bright, noticeable patch against an older, weathered deck. If your pool deck features stamped patterns, colored stains, exposed aggregate, or imported stone pavers, matching that finish requires specialized masonry skills. Many pool contractors sub-contract that masonry work to patio specialists, which adds an extra management fee to your total invoice.

Leaving a cracked skimmer unaddressed makes these costs much worse due to soil washout. When hundreds of gallons of chlorinated water seep through a crack in the plastic housing every week, that water erodes the dirt base supporting your concrete deck. Over a single swimming season, a hidden leak can hollow out a void beneath the deck, causing the concrete patio to crack, drop, or sink toward the pool wall.

Can you patch a cracked skimmer instead of replacing it?

Before you commit to spending thousands of dollars on deck demolition, inspect whether your skimmer can be repaired. In many situations, an inexpensive patch will buy you years of dependable use. The deciding factor is the exact location, direction, and depth of the crack.

Most surface repairs rely on pool putty or epoxy (a two-part waterproof repair putty that hardens underwater like stone). You knead the two parts together in your hands until they turn a uniform color, then press the putty firmly into the clean crack. As the putty cures, it bonds directly to the ABS plastic of the skimmer shell. For clean splits in flat plastic areas, technicians also use ABS solvent cement, which chemically melts the plastic seams back together.

A simple patch makes sense when you see these conditions:

• The crack is a thin hairline split along the side or back wall of the plastic housing above the suction port.
• The damage sits directly inside the skimmer throat (the water opening in the pool wall) where water flows from the pool.
• The water leak is caused by loose screws, degraded silicone, or a cracked faceplate that can be replaced without disturbing the deck.
• The plastic is still rigid and has not grown brittle or chalky from decades of direct sunlight and chemical exposure.

A full replacement becomes unavoidable when you find these severe problems:

• The crack runs straight through the bottom suction hole where the PVC pipe threads screw into the skimmer body.
• The skimmer housing has shifted off-level or cracked completely in half because the patio slab settled on top of it.
• You patch the crack with epoxy, but the patch breaks open again within weeks due to ground movement or high pump suction.
• Soil or sand is visibly washing into the skimmer basket from behind the plastic walls during everyday pump operation.

If you decide to try a patch, clean the plastic thoroughly with a scouring pad to remove algae, body oils, and chemical residue before applying the repair putty. A ten-dollar tube of pool epoxy is always worth trying before scheduling an expensive demolition crew, as long as the crack is not located in the bottom plumbing port.

What happens during a professional skimmer replacement?

Knowing what happens on repair day helps you plan your backyard access, keep pets safely indoors, and monitor the quality of the work. A complete in-ground skimmer replacement typically takes one to three days of active labor, followed by several days of concrete drying time.

1. Lowering the water line: The contractor drains the pool water roughly six to twelve inches below the bottom of the skimmer opening. This keeps water away from the work area and prevents dirt and concrete slurry from washing into the pool during demolition.
2. Cutting the pool deck: The technician measures a square around the skimmer lid and uses a walk-behind diamond concrete saw to cut clean, straight edges through the patio. This prevents jagged fracture lines from spreading into the rest of your pool deck.
3. Jackhammering the slab: The crew breaks the concrete inside the cut square into small chunks and carries them out to a disposal truck. They take extra care around the pool edge to avoid chipping the coping stones or decorative perimeter tiles.
4. Hand digging the soil: Workers carefully dig down two to three feet around the plastic skimmer body using hand spades. They expose the skimmer body, the electrical bonding wire, and the underground PVC suction pipe.
5. Removing the damaged skimmer: On a concrete pool, the crew chips away the gunite collar holding the skimmer to the pool wall. On a vinyl or fiberglass pool, they back out the mounting bolts and separate the faceplate. They cut the PVC pipe beneath the unit with a pipe saw and lift the broken plastic body out of the ground.
6. Setting the new skimmer: The technician places the new commercial skimmer in the exact same footprint, checking with a spirit level to ensure the floating flap gate (the weir door that bobs in the water opening to catch leaves) will swing smoothly. They solvent-weld new schedule 40 PVC pipe to the existing plumbing line using heavy-duty glue and primer.
7. Verifying the plumbing line: Before any dirt is shoveled back into the hole, the crew seals the pipe ends and conducts a pressure verification with air or water. This step confirms that the new pipe joints are 100% airtight and will not leak once buried beneath tons of dirt and rock.
8. Rebuilding the pool wall: On concrete pools, the crew packs expanding hydraulic cement and fresh concrete around the skimmer throat to bond the new box solidly to the original pool shell. This step prevents water from creeping between the plastic housing and the concrete wall.
9. Backfilling and pouring the deck: The crew shovels crushed gravel back around the housing and tamps it down in layers to prevent future settling. They drill into the surrounding concrete slab to insert rebar pins, tie the metal mesh together, and pour a fresh concrete patch level with your existing patio.
10. Refilling and inspecting operation: Once the wall mortar has cured, you refill the pool above the halfway mark of the skimmer mouth. The technician turns on the circulation pump, checks the water draw, and verifies that the floating flap gate bobs freely with the current.

How do you confirm the skimmer is actually leaking?

Never hire a contractor to tear up your deck until you are completely sure the leak is located in the skimmer. Pool leaks can hide in underground return pipes, main drains, light niches, or pump shaft seals. You can confirm whether the skimmer is the culprit using three simple checks that cost almost nothing.

First, perform the water level check. Turn off your pool pump and stop adding fresh water from the garden hose. Let the water level drop on its own over several days. If the water stops dropping the exact moment it reaches the bottom lip of the skimmer throat (the water opening in the pool wall), the leak is almost certainly inside the skimmer housing or its faceplate seal. If the water keeps dropping down to the return jets or pool light, the leak is located somewhere else entirely.

Second, run a dye leak check. Turn off the pump completely and wait ten minutes for the water surface to become completely calm and still. Take a small plastic bottle filled with pool leak dye or common dark food coloring. Float near the skimmer and hold the tip of the bottle a quarter-inch away from visible cracks in the plastic, around the faceplate screws, and along the front throat seam. Squeeze out a small puff of dye. If the dye stays floating in a cloud, there is no active water flow. If you see the ribbon of dye suddenly get sucked into a crack or screw hole, water is flowing straight out of the pool into the ground behind the wall.

Third, use a bucket check to separate leaks from normal summer evaporation. Fill an ordinary five-gallon plastic bucket with pool water and set it on the top pool step so the water in the bucket stays at roughly the same temperature as the pool. Mark the water level inside the bucket with a piece of electrical tape, then mark the pool water level on the outside of the bucket. Let the pool run normally for 24 hours. If the pool water level drops substantially faster than the water inside the bucket, you have a structural leak rather than basic evaporation.

Also, keep an eye on your pump strainer basket. If your circulation pump repeatedly fills with large pockets of air while the pool water is at normal height, the skimmer suction pipe may be drawing air through a cracked underground joint. When a crack exists below the water line, it pulls air into the system while the pump runs and drains water into the ground when the pump turns off.

FAQs

How long does an in-ground skimmer replacement take?

The active demolition, plumbing work, and concrete pouring usually take one to two full workdays for an experienced pool crew. However, you should expect the full project to take three to five days before you can swim again. The hydraulic cement around the skimmer throat and the new concrete patch on your patio must cure thoroughly before you can refill the pool and walk on the deck.

Will a leaking skimmer cause deck damage?

Yes, an unaddressed skimmer leak is one of the leading causes of sinking concrete pool decks. As chlorinated water leaks through the cracked plastic, it washes away the compacted dirt, sand, and crushed gravel that support your patio slab. Over several months, this erosion creates an underground hollow space, causing the heavy concrete above to crack, tilt, or pull away from the pool coping.

Can you replace an above-ground skimmer by yourself?

Most handy pool owners can replace an above-ground pool skimmer in two to three hours with basic hand tools. You only need a screwdriver, a utility knife, and replacement rubber gaskets that match your pool wall cutout. You simply lower the water a few inches below the skimmer mouth, unscrew the old faceplate from the pool interior, bolt on the new unit, and tighten the hose clamps on your filter line.

Should you replace the suction pipe when changing the skimmer?

Contractors usually replace the first three to five feet of underground PVC pipe directly beneath the skimmer housing as standard practice. The threaded connection at the base of the skimmer is frequently cracked during ground shifting or demolition, so gluing in a fresh pipe section prevents callbacks. Replacing the entire pipe run all the way back to your pump pad is rarely necessary unless an underground pressure check reveals a second leak along that line.