Aboveground Pool Winterizing Procedures


Labor Day has come and gone, and for many it will soon be time to close the pool. If you are like me, this is one day I tend to dread. Gather your family or willing friend, and schedule a Saturday to properly close your pool – so depressing!

Today’s blog is going to help you close an above ground pool the proper way, to make for an easier spring opening.

How to Winterize Aboveground Pools

It is good advice to wait until your pool water is 65 degrees or lower to start closing up for the winter. If the water is any warmer, the chemicals will not work properly, and you may end up with green water come spring time. Once your water has cooled off, follow these steps.


  • Vacuum the bottom or use an automatic cleaner
  • Skim the surface using a leaf net and get rid of any debris
  • Scrub the walls and floor with a wall brush
  • Continue to run the filter while moving ahead


  • Free chlorine: 1-3 ppm
  • pH: 7.2-7.6
  • Alkalinity: 80-120 ppm
  • Calcium hardness: 200-400 ppm
  • Cyanuric acid (stabilizer): 30-50 ppm
  • TDS (total dissolved solids): <2000 ppm


  • Algaecide 50 or 60 plus is suggested as it is a non-metallic based product and prevents staining over the winter if you use our pool closing kit
  • Swimming pool closing kits should be ordered based on pool size. The largest kit we carry is for pools up to 35,00 gallons. If your pool is bigger than this, order two kits! Having too many of a winter pool chemicals is better than not enough
  • Use chlorine free shock and floaters. If chlorine shock or tablets are used, you can risk damaging your liner and cover over the winter
  • If possible, take a break and allow your pool chemicals to circulate for a few hours or overnight, before continuing. Cover the pool loosely if you want to keep it clean


  • 4-6 inches below the skimmer level by backwashing or by draining out of the return
  • If you are like me and don’t like draining your pool, invest in a skimmer closure
  • Be sure to discharge the water to a proper location


  • Plug return lines with a winterizing plug, on the inside of the pool
  • Remove filter hoses and drain the filter and pump
  • Move pump and filter to a weather protected area, indoors if possible

Remember to follow these steps, add the closing kit, Then drain your pool and install the cover. If it’s very windy, and the pool is getting dirty, you can install the cover on the pool, tightening the cable, which you can loosen when you need to plug the returns.


How do I Know What Cover to Buy? You may look through our catalog or website, and ask yourself what cover to buy. Ask yourself how much money you are looking to spend. You’ve heard the saying; you get what you pay for. It pays to spend a little bit more money up front on the covers, as these covers have a longer warranty and will last longer than our economy cover.

The majority of our aboveground pool covers have a 4 foot overlap and the strength is based on the weave count. The better covers are going to have a higher weave count or scrim.  To compare our least expensive economy cover, to our most expensive polar protector, the economy has an 8×8 weave count and the polar protector is 14×14. The higher the weave count, the more durable the cover will be.


Our best above ground pool covers to buy is the Ultimate Series. These covers are made with rip stop technology. The rip stop weave stops tears and rips before they spread. These covers come with a 5 foot overlap for greater wind protection. If you are looking to get the most out of a winter cover, invest in one of these covers and you won’t be disappointed!

Why should I buy a more expensive cover? The answer is simple: the cover will be much stronger to resist punctures and tears. A better pool cover will last longer and you won’t be throwing it away in just a few years, adding to the landfills.

Above Ground Pool Closing Accessories

While the following list of accessories is not necessary to closing your pool, we highly suggest using these products to create an easier spring opening.

air-pillowAir pillow

This draws freezing water into the air pillow, to prevent the water from freezing to the walls

cover-clipsCover Clips

Ideal for a windy area, these clips fasten to the top rail and keep the cover taught

cover-pumpsCover Pump

Eliminates standing water on the cover and prevents ice on top of the cover. Too much water or ice will cause strain to the fabric and rip the material

Winter Ballwinterball

Helps maintain clear water over winter along with stain protection. This is best when used in conjunction with a winterizing kit

skimmer-guardSkimmer Guard

Absorbs ice expansion to keep your skimmer housing from cracking if it fills up with pool water or from rain water. Threaded end with o-ring seals up to all above ground pool skimmer sizes



If you want peace of mind this winter, make sure to properly close and cover up your pool. If you have questions or concerns on the closing process for an aboveground pool, feel free to give us a call.

[Happy] pool closing!  🙁

Kristine Malak
InTheSwim Staff Blogger


Aboveground Pool Winterizing Procedures — 2 Comments

  1. Pingback: WInter Pool Chemicals: A Buyer's Guide | InTheSwim Swimming Pool Blog

  2. Pingback: Inground Pool Winterization or, How to Button up the Pool | InTheSwim Swimming Pool Blog

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