If you own a pool in New Jersey, you already know the season doesn’t last forever. When the leaves start falling and the nights get chilly, it’s time to think about closing your pool for the winter. But here’s something many homeowners don’t realize: closing an above-ground pool isn’t the same as closing an in-ground pool.
The steps, the risks, and even the equipment involved can look very different. Skip the right process, and you could end up with cracked pipes, torn liners, or a green, swampy mess waiting for you in spring.
That’s why we put together this guide—to show you the key differences between above-ground and in-ground pool closings, so you know what matters most for your pool type. If you’d like a bigger-picture overview first, check out our article on what a pool closing service includes.
Of course, if you’d rather skip the guesswork, our local team is here to help. We offer professional pool closing across Mercer County and nearby towns—so you can relax while we make sure your pool is protected all winter long.
Why Proper Pool Closing Matters in New Jersey
New Jersey winters aren’t gentle on pools. Between heavy snowfall, hard freezes, and sudden temperature drops, skipping or rushing through a closing can cause more harm than you might expect. Frozen pipes, cracked filters, torn liners, and even safety risks are all common issues when pools aren’t winterized correctly.
Closing your pool isn’t just about covering it up, it’s about protecting your investment so that when spring arrives, your pool is clean, safe, and ready to enjoy. A little extra effort in the fall saves you from days of scrubbing and costly repairs in the spring.
If you’ve ever wondered what happens when a pool isn’t cleaned or cared for properly before winter, you might find this article helpful: What Happens If You Don’t Clean Your Pool?.
And because every yard and township has its own challenges—like leaf-heavy backyards in West Windsor or shaded pools in East Windsor—our team tailors each closing to your pool’s needs. You can also explore our pool closing services in West Windsor Township if you’d like to see what goes into a local closing near you.
Above-Ground Pool Closing: Key Steps & Challenges
Above-ground pools may look simple compared to in-ground designs, but when it comes to closing them, they can be surprisingly fragile. Their lightweight structure and exposed walls mean they need extra attention to get through a New Jersey winter without damage. Here are the key areas to focus on:
1. Water Level
You’ll want to lower the water below the skimmer—but not too much. If you drain too far, the pool walls may become unstable under snow load.
2. Equipment Storage
Hoses, pumps, and filters should be disconnected, drained, and stored indoors to avoid freeze damage. Leaving them outside all winter is one of the most common mistakes homeowners make.
3. Covers
A strong winter cover secured with a cable and winch is essential. The challenge? Snow and ice can weigh it down, stretching the liner or even pulling at the walls. Many owners add an air pillow under the cover to relieve pressure.
4. Structural Concerns
Because the walls and liners are thinner, above-ground pools are more vulnerable to tearing, collapse, or shifting if closing isn’t done carefully.
👉 For a deeper dive into keeping your pool structure in good shape, check out our Pool Repair Prevention Guide.
And if you’re in a town like Plainsboro, where winters often bring heavy snow and wind, our team can help with tailored pool closing services in Plainsboro Township to make sure your above-ground pool stays protected until spring.
In-Ground Pool Closing: Key Steps & Challenges
In-ground pools may be sturdier than above-ground designs, but that doesn’t mean closing them is easier. In fact, because they have more plumbing, permanent equipment, and larger surface areas, there’s a bigger margin for error if the closing isn’t done properly. Here’s what matters most:
1. Water Level & Chemistry
Unlike above-ground pools, you typically don’t drain as much water from an in-ground pool. Instead, the focus is on balancing chemicals so algae and bacteria don’t take over during the off-season.
2. Plumbing Blowout
In-ground pools have underground pipes that are especially vulnerable to freezing. These lines need to be blown out with specialized equipment to ensure no water remains inside. Skip this step, and you could face cracked plumbing by spring.
3. Equipment Protection
Heaters, pumps, and filters are left in place, but they need to be drained and winterized correctly. Forgetting to drain just one component could mean replacing it before next season.
4. Safety Covers
Instead of simple tarp-style covers, in-ground pools often use mesh or solid pool safety covers. These not only keep debris out but also add a layer of safety for kids and pets.
👉 Want to know how pros handle the whole process? Take a look at our pool closing services in Hamilton Township—we tailor every closing to local conditions so you don’t have to worry about plumbing or equipment damage over the winter.
Side-by-Side Comparison: Above-Ground vs. In-Ground Closings
By now, it’s clear that closing an above-ground pool looks a little different from closing an in-ground one. But what if you just want a quick breakdown? Here’s an easy side-by-side comparison:
| Aspect | Above-Ground Pool Closing | In-Ground Pool Closing |
| Water Level | Lower below skimmer, but not too far (to protect walls). | Lower slightly, but focus more on chemical balance. |
| Plumbing | Minimal plumbing, usually disconnect and store hoses. | Complex underground plumbing requires professional blowout. |
| Equipment | Remove and store pump/filter indoors. | Drain and winterize equipment in place. |
| Covers | Tarp-style covers with cable & winch; often need air pillow support. | Safety covers (mesh/solid) for durability and accident prevention. |
| Risks if Not Closed Properly | Wall collapse, liner tears, cover damage. | Cracked pipes, broken equipment, costly repairs. |
The big takeaway: above-ground pools need structural protection, while in-ground pools need plumbing protection. Both benefit from professional care, especially in areas with harsh winters.
👉 If you’re still deciding between a DIY closing and hiring help, you may want to read our article: Why DIY Pool Opening (and Closing) Costs More.
And for homeowners in East Windsor, we offer local pool closing services designed to take the guesswork out of both above-ground and in-ground pool winterization.
Common Mistakes Homeowners Make During Pool Closing
Even when pool owners know the basics of closing, a few overlooked details can cause major problems come spring. Here are some of the most common mistakes we see in New Jersey:
1. Skipping a Final Cleaning
Closing a dirty pool is like putting away dishes without washing them—you’ll just face a bigger mess later. Leaves, algae, and debris left behind can stain liners and make spring openings harder.
👉 If you need a refresher on good cleaning habits, check out our guide on how often to clean your pool.
2. Forgetting to Balance Chemicals
Some homeowners think winter water chemistry doesn’t matter. The truth? Poorly balanced water leads to scale buildup, staining, and algae growth under the cover.
3. Not Protecting Plumbing & Equipment
One forgotten hose, one un-drained filter, or one line that isn’t blown out can mean hundreds of dollars in repairs.
4. Using a Worn or Improper Cover
A flimsy cover can rip under heavy snow, while an ill-fitting one leaves gaps for debris. Both result in cloudy, contaminated water by spring.
5. Closing Too Late
Waiting until after a cold snap can cause freezing damage before your pool is even winterized.
👉 To understand the risks of poor upkeep, you may want to read 5 Red Flags Your Pool Needs Professional Help.
And if you’re in Robbinsville Township, our team specializes in seasonal prep with local pool closing services so you don’t have to worry about costly mistakes.
Professional vs. DIY Pool Closing: What’s Best for You?
When it comes to closing your pool, many homeowners wonder: Should I do it myself or hire a pro? The answer depends on your comfort level, equipment, and how much risk you’re willing to take.
DIY Pool Closing
- Pros: Saves money upfront, flexibility to do it on your schedule.
- Cons: Easy to miss steps like plumbing blowouts or equipment draining. Mistakes can lead to expensive repairs in spring.
Professional Pool Closing
- Pros: Expertise, proper tools, tailored approach for your pool type and township. Saves time and stress, reduces long-term costs.
- Cons: Upfront service cost (though often less than fixing freeze damage).
For example, our team offers pool closing services in Mercer County, NJ designed to protect both above-ground and in-ground pools from winter damage.
👉 Not sure what professional service actually includes? Here’s a breakdown: What Is Pool Closing Service?.
At the end of the day, hiring a pro is like insurance—you’re not just paying for the job, but for peace of mind that your pool will open smoothly next year.
Final Thoughts & Call to Action
Closing a pool isn’t just about putting on a cover and calling it a day—it’s about protecting your investment, whether you own an above-ground pool that needs structural care or an in-ground pool that depends on proper plumbing winterization. Done right, you’ll save money, avoid headaches, and start the next swim season stress-free.
If you’re in New Jersey and want a worry-free winter, Desi Boys Pool Services has you covered. From weekly pool maintenance to full pool equipment replacement, our team knows how to prepare your pool for every season.
👉 Ready to close your pool with confidence? Explore our pool closing services in West Windsor Township, NJ or contact us today to book your appointment.
With the right closing steps—and the right team—you’ll be swimming again next spring without costly surprises.
