November 17, 2025

Step-by-Step Guide to Winterizing Your Above Ground Pool

Step-by-Step Guide to Winterizing Your Above Ground Pool

If you own an above ground swimming pool, taking proper steps to protect it before winter hits is essential for long-term durability and trouble-free opening in spring. Learning how to winterize an above ground pool is one of the most important responsibilities for any pool owner. When done correctly, winterizing keeps your water clean, protects equipment from freezing, and prevents structural damage.

Whether you’re researching how to winterize an above ground saltwater pool, looking for guidance on winterizing above ground swimming pool systems, or want the safest method for handling your pump and filter, this guide covers everything. Anomaly Pool Services is here to make the entire process easier, safer, and stress-free.

Why Winterizing an Above Ground Pool Matters

Above ground pools are sturdy but still vulnerable to winter damage. Cold temperatures cause water to expand as it freezes, which can strain the pool walls, damage liners, and crack plumbing. Skipping or improperly performing winterizing steps can leave you with expensive repairs once warmer months return.

Proper winterizing:

  • Protects the pool walls and liner
  • Prevents freeze damage to hoses, pumps, and filters
  • Keeps algae from forming
  • Preserves water quality
  • Makes spring opening easier and cheaper

Anomaly Pool Services helps homeowners avoid these problems through reliable seasonal care.

How to Winterize an Above Ground Pool: A Complete Guide

Wondering how to winterize an above ground pool from start to finish? Here is a clear, step-by-step process to follow. These steps are designed for both standard and saltwater pool systems.

Clean the Pool Thoroughly

Start by removing everything inside the pool:

  • Floats
  • Toys
  • Ladders
  • Handrails

Next, skim leaves and debris off the surface, vacuum the pool floor, and brush the walls. A clean pool is essential for winter because leftover debris can stain the liner and contribute to algae growth.

Balance the Water Chemistry

Before closing the pool, test and balance the water. Improper chemistry can lead to liner discoloration, scale buildup, and cloudy water during winter.

Ideal ranges include:

  • pH: 7.2 - 7.6
  • Alkalinity: 100 - 150 ppm
  • Calcium hardness: 175 - 225 ppm

Balancing the water is one of the most important steps in winterizing above ground swimming pool systems.

Add Winterizing Chemicals

Once the water is balanced, add winter chemicals. These usually include:

  • Winter algaecide
  • Chlorine shock
  • Scale inhibitors
  • Stabilizer (as needed)

This protects the water while the pump is off for several months.

Lower the Water Level (If Recommended)

Not all above ground pools require a lowered water level. Many modern pools with skimmer plates can maintain normal water height.

  • However, if your manufacturer recommends lowering the water:
  • Drain until the water sits just below the skimmer opening
  • Never drain completely, this may damage the liner

Anomaly Pool Services can advise which method suits your pool.

Prepare the Pump and Filter for Winter

One of the most important steps is winterizing an above ground pool pump and filter systems.

Here’s how:

For the Pump

  • Disconnect all hoses
  • Drain all water
  • Remove the pump and store it indoors if possible
  • Make sure the pump sits upright in a dry location

For the Filter

Backwash the filter if it’s a sand filter

  • Remove the drain plug
  • Let water drain completely
  • Store the filter indoors if possible, or protect it with a cover

Freezing water is the biggest threat to pumps and filters, so draining them fully is essential.

Install the Winter Cover

The final step in how to close an above ground swimming pool for winter is installing a sturdy winter cover.

Here’s how to do it right:

  • Stretch the cover tightly across the pool
  • Use a cable and winch to secure it
  • Add air pillows (for above ground pools) to relieve pressure from ice
  • Make sure the cover rests above the water, not touching the liner
  • Use additional clips or a cover seal if wind is an issue

Winter air pillows help distribute the pressure created by ice expansion, which protects your pool walls.

How to Winterize an Above Ground Saltwater Pool

Saltwater pools require a few additional steps because salt systems contain metal components that must be protected.

Here’s what to do:

  • Turn off the saltwater generator
  • Remove the salt cell
  • Clean the salt cell thoroughly
  • Store the cell indoors to prevent winter corrosion

Saltwater systems can be damaged by freezing temperatures, so taking apart the generator is crucial.

Anomaly Pool Services specializes in saltwater pool winterizing and can ensure everything is handled safely.

Extra Tips for Above Ground Pool Winter Care

Winterizing doesn’t end the moment you install the cover. Here are additional steps to keep your pool protected all season long:

Check the Cover Regularly

Wind, snowfall, and debris can weaken a cover. Make sure it remains secure and free from sagging.

Monitor Water Levels

If you notice significant water loss, contact a professional to rule out liner damage.

Keep Pump and Filter Indoors

Store equipment in a dry garage or shed until spring.

Inspect the Pool Wall

Above ground pools can shift with temperature changes, so keep an eye out for bulging or bending.

Anomaly Pool Services offers ongoing winter monitoring for homeowners who want extra peace of mind.

Frequently Asked Questions

How do I winterize an above ground pool without damaging the liner?

Balance the water chemistry, add winter chemicals, clean the pool, and follow manufacturer instructions on water level. A properly placed winter cover also helps protect the liner.

How to winterize an above ground saltwater pool correctly?

Turn off the salt system, remove the salt cell, clean it, store it indoors, and winterize the pool the same way as a standard system.

Do I have to remove my pump and filter?

Yes. For proper winterizing above ground pool pump and filter systems, the equipment must be drained and ideally stored indoors to prevent freeze damage.

What if I don’t have air pillows?

Air pillows are recommended because they help reduce strain on pool walls. If you don’t have them, consider adding at least one large pillow for freeze protection.

Should I completely drain my above ground pool for winter?

Never fully drain it. Doing so can cause liner shrinkage, wall collapse, and other structural issues.

Does Anomaly Pool Services help with winterizing?

Yes! If you want expert help, Anomaly Pool Services provides complete pool winterizing services for above ground pools, including saltwater systems, pumps, filters, and covers.

Final Thoughts

Understanding how to winterize an above ground pool is the key to protecting your investment from harsh winter conditions. With proper cleaning, equipment care, chemical balancing, and a secure winter cover, your pool will stay safe and ready for easy opening in spring.

For homeowners who want stress-free winterizing, Anomaly Pool Services delivers reliable, professional support for all types of above ground pools, including saltwater systems. Let our experts help you protect your pool all year long.

Copyright 2025. Anomaly Pool Services Company, LLC.