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Winterizing Kits: Swimming Pool Closing Kits

Time to winterize the pool! These words either bring you sadness or joy.

For those who have been relaxing in the pool, and enjoying the time swimming, it's a sad time of year, as the weather will soon get cold, and it will be time to winterize the pool.

On the contrary, those who have been maintaining the pool all season, this is a welcome time of year. Soon, there will be one less item on the “to-do” list! 

Now please, before you start the process of closing your pool, consider the following:

  1. Is it cold enough? To maintain a water temperature of 65°F or colder? If not, then you should probably wait as you will be at a much higher risk of getting algae.
  2. Do you have your pool closing chemicals? Winterizing kits are essential to closing your pool because they will allow you to open up to a clean clear pool, we guarantee it.
  3. Is your cover ready?

Shopping for a Pool Closing Kit

Make sure to purchase a non-chlorine winter kit. This is very important because a chorine-based closing kit can damage the surface of your pool over the winter.

Don’t throw your money out in the cold! A totally chlorine-free swimming pool closing kit will not only protect your pool surface but will also prevent algae from forming over the winter.

In addition, a non-chlorine winterizing kit is designed to be used with your water, balanced the way it has been all year. So, as long as you have kept your chemicals balanced this year, then this step will be really easy and your winter pool chemicals will be much more effective!

Sizing a Winter Chemical Kit

When sizing a swimming pool closing kit, make sure to not short-change your pool of the valuable closing pool chemicals.

Since our winterizing kits are non-chlorine, they are safe to “overdose” but under cutting the dosage will lower the effectiveness.

Additionally, make sure to use the full gallonage of your pool, because for greatest efficacy these will need to be added before draining your pool for winter.

Selecting a Winterizing Kit

pool winterizing kits

There are two types of winter pool kits - the Standard Closing Kit and the Ultimate Closing Kit.

Our Standard Winterizing Kits come in 3 sizes, 7,500 gallons, 15,000 gals and 35,000 gals, chock full of the following winter pool chemicals to keep your pool fresh all winter long:

  • Winterizer – Strong and long lasting winter algaecide.
  • Winter Stain Away – Prevents metal particles in your water from staining your pool over the winter.
  • Chlorine-Free Pool Shock – Burns out contaminants, but does not affect the algaecide.
  • Winter Pool Floater with Non-Chlorine Oxidizer – This floater will not only assist in burning out dead waste but will also remove CO2, an essential nutrient for algae.
  • Winter Sorb – Any oils that are in your pool from the season such as suntan lotion or body oils will be absorbed by this unique foam that does not absorb water.

ultimate winter pool closing kit

The Ultimate Winterizing Kit is our best pool closing kit, suitable for any pool type, up to 35,000 gallons, to keep your pool fresh for spring.

We've combined In The Swim non-chlorine shock and a non-chlorine floater with the best products from Natural Chemistry.

The Ultimate Closing Kit contains:

  • Natural Chemistry Pool Magic Plus Phos Free – Algaecide plus phosphate remover. Great for mesh safety covered pools.
  • Natural Chemistry Metal Free – Locks up any metal particles in your water which could stain your underwater pool surfaces.
  • Chlorine-Free Pool Shock – Burns out any organic contaminants or waste in your pool.
  • Winter Pool Floater with Non-Chlorine Oxidizer – Won't harm pool surfaces by bleaching vinyl or staining steps.
  • Winter Sorb – Absorbs oils and greasy pollutants that give a bathtub ring to pools with mesh covers, or solid with drain panel safety covers.

In summary, be sure to go with a chlorine-free winter pool kit, of a sufficiently large size, and add it before lowering your pool water. Also, check your pool water temperature, and try to wait until it's 65 degrees or less before closing the pool.

In The Swim makes every effort to provide accurate recommendations based upon current ANSI/APSP/ICC-5 2011 (R2022) standards, but codes and regulations change, and In The Swim assumes no liability for any omissions or errors in this article or the outcome of any project. You must always exercise reasonable caution, carefully read the label on all products, follow all product directions, follow any current codes and regulations that may apply, and consult with a licensed professional if in doubt about any procedures. In The Swim assumes no legal responsibility for your reliance or interpretation of the data contained herein, and makes no representations or warranties of any kind concerning the quality, safety, or suitability of the information, whether express or implied, including, without limitation, any implied warranties of merchantability or fitness for a particular purpose.