10 Essential Pool Closing Equipment and Winterizing Checklist Items for Your Backyard Pool

Watching the first autumn leaves drift across a chilly pool surface is the universal signal that swim season has officially come to an end. Skipping steps during the winterization process might save an hour today, but it invites cracked pipes, algae blooms, and ruined liners come spring. Equipping yourself with the right tools now ensures that opening the pool next year is a seamless, inexpensive celebration rather than a costly damage-control mission.

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Why Proper Winterization Saves Your Pool Budget

Freezing water expands by about nine percent, exerting immense pressure on pipes, pumps, and pool walls. If water remains trapped inside your plumbing lines during a hard freeze, it will split schedule 40 PVC like paper. The cost of excavating a concrete deck to repair a single shattered pipe can easily dwarf the price of a complete suite of high-quality winterizing gear.

Beyond mechanical protection, a sealed and chemically balanced pool prevents the nightmare of “green spring.” When sunlight and organic debris infiltrate a dormant pool, they create a breeding ground for aggressive algae blooms. Scrubbing, shocking, and repeatedly draining a neglected pool in May wastes hundreds of dollars in chemicals and thousands of gallons of municipal water.

Investing in durable, specialized winter equipment acts as an insurance policy for your backyard oasis. Rather than relying on makeshift solutions like milk jugs or cheap tarps that fail mid-winter, choosing purpose-built gear safeguards your investment. A methodical closing routine pays dividends in peace of mind and keeps your long-term maintenance budget intact.

Safety Pool Cover – Loop-Loc Super Dense Mesh

A safety cover is the frontline defense for your pool, preventing leaves, windblown debris, and accidental falls into the cold water. Unlike standard tarps, a true safety cover is anchored directly into the deck, tensioned with heavy-duty springs to support immense weight. This prevents dangerous water accumulation on top while securing the perimeter against pets and wildlife.

The Loop-Loc Super Dense Mesh stands out because it blocks nearly all sunlight while allowing water to drain through seamlessly. This unique blend of dense polypropylene mesh prevents the stagnation and algae growth associated with standing cover water while keeping the cover light enough for easy handling. Its high break-strength rating exceeds ASTM safety standards, meaning it can easily support the weight of a wandering animal or a curious child.

• Compatible Decking: Requires concrete, pavers, or wood decks for anchor installation.
• Sizing Options: Custom-cut to fit exact pool geometry or standard rectangular sizes.
• Hardware Included: Brass anchors, stainless steel springs, and installation tools.

This cover is perfect for homeowners in heavy snow zones who want ultimate safety and a dry cover surface. It is not the right choice for above-ground pools without decking or for budget-conscious owners who prefer a simple, unanchored tarp system.

Pool Closing Kit – In The Swim Ultimate Kit

Chemical preparation is what keeps your water clear and stable during months of dormancy. A specialized closing kit delivers a concentrated punch of winterizing chemicals designed to slow-release and protect pool surfaces over the cold season. Skipping this step guarantees a cloudy, stained, or algae-ridden pool when the cover comes off.

The In The Swim Ultimate Kit provides a comprehensive, pre-measured chemical regimen that takes the guesswork out of closing. It features a time-release winter floater packed with non-chlorine oxidizing sanitizer, alongside a powerful winterizer algaecide and a metal free sequestrant to prevent copper and iron staining. The inclusion of a unique slow-dissolving carbon-free shock ensures your liner is protected from bleaching during the long winter months.

• Kit Sizing: Available in options for pools up to 10,000, 20,000, and 35,000 gallons.
• Liner Compatibility: Safe for vinyl, fiberglass, and plaster surfaces.
• Longevity: Formulated to remain active for up to six months of cold storage.

This kit is ideal for DIY pool owners who want a straightforward, all-in-one chemical pack without measuring individual components. It is less suitable for those with custom automated sanitation systems that require specific chemical balances.

Pool Line Blower – Cyclone Pro 3 HP Blower

Even a tiny amount of water left in underground plumbing can freeze, expand, and shatter the lines. A line blower forces high-volume, low-pressure air through the entire filtration system, clearing out every drop of water from the skimmers to the return jets. Attempting this task with a standard shop vac often fails because they lack the necessary backpressure to clear long, deep plumbing runs.

The Cyclone Pro 3 HP Blower is the industry standard for a reason, delivering 7.5 Amps of continuous clearing power through a durable bypass motor. This motor is engineered to run cool even under heavy backpressure, ensuring it won’t overheat while clearing deep main drains. Its rugged, impact-resistant plastic housing is built to withstand damp pool equipment pads and accidental drops.

• Motor Specs: 3.0 Horsepower, 120V bypass motor.
• Hose Connection: Standard 1.5-inch threaded outlet with a flexible hose adapter.
• Weight: Extremely portable at under 15 pounds.

This is a must-have for owners of in-ground pools with complex plumbing configurations or deep main drains. Above-ground pool owners with short, accessible hoses can usually get by with simpler gravity-draining methods.

Winterizing Plug – Anderson Expansion Plug

Once the plumbing lines are blown clear of water, they must be sealed immediately to prevent water from seeping back in. Winterizing plugs sit inside the return jets and skimmer lines, forming an airtight, watertight seal against the cold. Without reliable plugs, groundwater or melting snow will find its way back into your pipes, setting up a freeze hazard.

The Anderson Expansion Plug is engineered with a heavy-duty nylon wing nut and a corrosion-resistant stainless steel bolt that compresses a thick rubber body. This compression creates a mechanical, ribbed grip against the interior walls of the pipe, ensuring it won’t slip or pop loose under pressure. Unlike cheap, pure rubber plugs that degrade and crack after one season, these are built for multi-year reuse.

• Size Range: Available in standard sizes from #00 (0.5 inch) up to #14 (4 inches).
• Common Use: #8 (1.5 inches) for standard return jets and skimmer inlets.
• Material: Premium neoprene rubber and marine-grade stainless steel hardware.

This plug is the gold standard for in-ground pool owners who need a guaranteed, high-pressure seal in freezing climates. It is unnecessary for pools located in tropical zones where freezing temperatures are not a threat.

Skimmer Guard – Gizzmo Ultra Freeze Protector

The skimmer throat is one of the most vulnerable parts of any pool because it sits right at the water line where ice forms first. When water freezes inside the skimmer well, it expands outward, easily cracking the plastic housing and causing a major, expensive leak. A skimmer guard absorbs this expansion pressure, collapsing inward to protect the surrounding plastic structure.

The Gizzmo Ultra Freeze Protector combines a heavy-duty, blow-molded plastic expansion tube with a built-in 1.5-inch and 2-inch threaded connection. This clever design allows it to screw directly into the skimmer’s bottom drain port, sealing the line while simultaneously acting as the freeze expansion absorber. Its sealed air chamber is designed to deform under ice pressure, taking the brunt of the destructive force.

• Thread Type: Dual-thread design fits both 1.5-inch and 2-inch female threads.
• Length: 16 inches, ideal for standard and deep throat skimmers.
• Installation: Simply wrap the threads with Teflon tape and hand-tighten into place.

This tool is indispensable for anyone with an in-ground pool in a region that experiences sustained, deep winter freezes. It is not compatible with certain non-standard or shallow above-ground pool skimmers.

Pool Cover Pump – Wayne WAPC250 Automatic Pump

Solid covers and safety covers alike will inevitably accumulate rain, melted snow, and soggy leaves over the winter. This heavy, standing water places immense stress on the cover anchors and can pull the entire cover into the pool. A dedicated cover pump sits directly on the cover, automatically removing water to keep the load manageable.

The Wayne WAPC250 Automatic Pump features i-Switch technology, which automatically turns the pump on when water reaches a depth of 2.1 inches and off when dry. This means you do not have to venture out in freezing weather to manually plug it in or monitor its progress. Equipped with a reinforced thermoplastic housing and a wide, debris-filtering base, it resists clogging from pine needles and leaf fragments.

• Flow Rate: Pumps up to 3,000 gallons per hour for rapid water removal.
• Power Cord: Extra-long 25-foot cord to reach outdoor GFCI outlets safely.
• Discharge: Connects to a standard 3/4-inch garden hose.

This pump is highly recommended for solid winter cover users who face heavy winter rain or snowmelt. It is less necessary for mesh cover users, as water naturally filters through into the pool below.

Pool Air Pillow – Robelle Ice Equalizer Pillow

When an above-ground pool freezes, the ice sheet expands outward, pushing directly against the delicate vinyl liner and steel walls. An air pillow sits floating in the center of the pool beneath the cover, creating an artificial void. As ice expands, it pushes inward against the compressible pillow rather than outward against your pool’s structural walls.

The Robelle Ice Equalizer Pillow uses heavy-gauge, cold-crack resistant PVC designed to withstand extreme sub-zero temperatures without deflating. It features secure grommets on all four corners, allowing you to easily center and tie off the pillow using nylon ropes. This prevents the pillow from shifting to the edge of the pool, which would render it useless.

• Sizing Options: Available in 4×4, 4×8, and 4×15 foot dimensions.
• Valve Style: Heavy-duty, leak-proof inflation valve compatible with leaf blowers or shop vacs.
• Rule of Thumb: Only inflate the pillow to 60-70% capacity to allow room for ice compression.

This is an absolute necessity for above-ground pool owners in cold regions to prevent wall buckling. It is generally not required for in-ground pools with sloped walls that naturally direct ice expansion upward.

Pool Water Bag – Swimline Double Water Tube

For pools using standard, non-anchored solid winter covers, keeping the cover secured against high winds is a constant battle. Water bags are heavy-duty tubes filled with water that sit along the pool perimeter, weighting down the cover edges. This prevents wind from getting underneath and sailing the cover away, while also stopping leaves from blowing in.

The Swimline Double Water Tube features a dual-chamber design that prevents the tube from rolling off the pool deck when filled. Made from heavy-duty, puncture-resistant 18-gauge vinyl, these bags are built to survive freeze-thaw cycles without splitting at the seams. Their leak-proof valves are easy to open with cold fingers, yet seal tightly enough to prevent slow leaks.

• Lengths Available: Available in 8-foot and 10-foot lengths.
• Fill Level: Fill only 50-70% full to allow space for water expansion when it freezes.
• Spacing: Place tubes end-to-end around the entire perimeter with no gaps.

This is the perfect anchoring solution for in-ground pool owners utilizing standard solid covers without deck anchors. It is completely unnecessary if you have a spring-anchored safety cover.

Skimmer Cover – Aquador 1090 Faceplate Cover

Traditionally, winterizing a skimmer required draining the pool water level below the skimmer mouth to prevent water from entering the plumbing. This wastes water and can destabilize vinyl liners. A snap-on skimmer cover seals the front of the skimmer faceplate, allowing you to keep your pool water at its normal operating level all winter.

The Aquador 1090 Faceplate Cover uses a patented plastic frame that permanently replaces your existing skimmer faceplate, paired with a snap-on, freeze-resistant lid. This snap-on lid creates a 100% watertight seal with no tools required at closing time, completely isolating the skimmer interior. By keeping the pool water level high, it helps weight down vinyl liners and protects the pool structure from shifting.

• Compatibility: Fits standard Hayward 1090 and comparable skimmer models.
• Material: UV-stabilized, impact-resistant plastic designed for sub-zero exposure.
• Pro Tip: Apply a light layer of silicone lubricant to the inner rim for an easier seal and removal.

This cover is a game-changer for vinyl liner pool owners who want to avoid the risks of lowering their water levels. It is not suitable for pools with non-standard, custom-molded skimmer configurations.

Pool Leaf Net – Blue Wave Leaf Net Cover

In wooded areas, autumn leaves can pile up on top of your winter cover, creating a heavy, rotting muck pile by spring. Dragging a water-soaked cover loaded with hundreds of pounds of wet leaves off a pool is backbreaking work. A leaf net is a lightweight mesh screen that sits on top of your main cover and is peeled off once the trees are bare.

The Blue Wave Leaf Net Cover is made from durable, woven polyethylene with an extra-wide overlap that ensures complete perimeter coverage. Its tightly woven mesh catches even small pine needles while letting water pass through freely, keeping the weight minimal. Once the final leaves fall in late autumn, you simply lift the net, shake off the debris, and store it away.

• Overlap Sizing: Features a generous 4-foot overlap to accommodate cover sag.
• Includes: Heavy-duty ratchet and steel cable to secure the net around the perimeter.
• Durability: UV-treated material resists rotting and tearing from twigs.

This net is a lifesaver for pool owners surrounded by deciduous trees or pine forests. It is unnecessary for pools in open, cleared yards with minimal overhanging foliage.

Pro Tips for Maintaining Your Closed Pool All Winter

Even with the best closing gear in place, pool winterization is not entirely a “set-it-and-forget-it” endeavor. Periodically check your pool cover tension, especially after heavy snowstorms or high-wind events. Keeping the cover drum-tight prevents debris from slipping underneath and protects the anchors from excessive stress.

If you live in an area prone to severe freezes, check your skimmer guards and expansion plugs mid-winter. Drastic temperature shifts can cause plastics to contract, occasionally loosening plugs. A quick visual inspection of the equipment pad and skimmers can catch small leaks before they turn into major structural repairs.

Finally, monitor the water chemistry underneath the cover as spring approaches. If a warm spell hits before you are ready to open, consider peeling back a corner of the cover to add a dose of liquid algaecide. This simple step prevents early-season algae growth, ensuring a much easier, faster, and cheaper spring opening.

Conclusion

Taking the time to properly winterize your backyard pool with high-quality, dedicated equipment is the ultimate act of preventative maintenance. By investing in the right tools and protecting your plumbing, deck, and liner, you protect your wallet from unexpected spring repairs. When the warm weather finally returns, you will reap the rewards of a crystal-clear pool that is ready for another season of summer fun.