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How-to Pool Closing: How to Close Your Pool

How to Close Your Inground Pool in the South

If you happen to live in an area with a warmer climate year round, then your pool closing strategy will be slightly different than those looking for information on How to Close Your Inground Pool in Cooler Climates, as you don’t have to worry as much about the water freezing, expanding, and damaging your pool walls and floor. Read on to learn more.


It’s important to leave some water in the pool, even if the temperatures aren’t expected to dip below freezing in your area, as the heat can still cause wear and tear to occur during the winter.

1. Clean Up Around the Pool. Be sure your entire pool area is free of dirt, debris, leaves, branches and other materials that could blow in and change the chemistry of your pool water.

2. Check All Pool Equipment. Before those temps start to cool off, check your inground pool equipment for signs of weather damage or items that need to be replaced or repaired. Doheny’s sells a variety of inground pool liner repair kits, pool plumbing repair kits and other pool repair products to make the job easy.

3. Clean the Pool Walls & Floor. However you decide to clean and scrub down your pool walls and floor, either with a hand held vacuum or a robotic cleaner, make sure that every surface is thoroughly cleaned. This will help guarantee sparkling water when the weather warms up.

4. Balance the Winter Chemicals. Test the water with a Doheny’s winter test kit, which contains Algaecide, Metal Out and Pool Shock, and adjust the chemicals as needed. Be sure to distribute each chemical evenly throughout the water supply. We recommend doing this 24 hours in advance to get the full effect.

5. Flush the Filtration System. It’s good idea to turn your filtration system on and run it for an hour after the winter pool chemicals have been added to the pool. The water circulation will remove any excess dirt and debris that still might be present in the water.

6. Clean the Pool Filters. For D.E filters, flush out the D.E. and thoroughly clean out the grid. For cartridge filters, make sure to clean the cartridge and the inside of the tank. For sand filters, run an extra-long backwash to make sure the sand is clean. After your filter is clean, remove all filter hoses and remove the drain plugs from the pump, filter, and heater to make sure no excess water is trapped. All equipment should be stored in a safe, dry place for next year.

7. Cover it Up- Doheny’s has a full selection of pool equipment covers that can protect your pool equipment, including heaters, filters and plumbing lines, during the winter season.

8. Use a Tablet Dispenser.- After you have used a pool closing kit to balance the chemicals, gently slide a winter oxidizing tablet dispenser into your pool. Don’t just throw it in, as this could release too much of the oxidizing agent into your water and create an uneven chemical balance.

9. Skim It! - Apply Skim Insure directly to your skimmer to prevent it from freezing water and potential internal damage if the temperatures in your area do drop. Even if below freezing weather isn’t on your radar, using Skim Insure is still a great preventative measure for all pool owners.

10.Cover Your Pool. When closing your pool, make sure your winter cover is clean and free from any tears and holes and use a pool cover repair kit to fix any damage. To install winter pool covers for inground pools:

• Read the directions carefully and make sure the entire inground pool cover is evenly spread over the pool’s surface.

• Consider leaf nets to protect the cover from leaves, branches, and other organic remnants

Safety covers are a great idea if you have small children or pets to protect during pool closing season

11.Add a Winter Pill. Doheny’s Winterpill will help keep pool water clean all winter long and is safe to use with other pool winterizing kits.

12.Observe and Remove. Throughout the season, keep an eye on the pool cover and pool area and check for signs of debris or damage. Allowing debris to collect during the winter will cause unnecessary wear and tear and greatly reduce the life of the pool cover. Staying on top of the winter preparations and keeping an eye on your inground pool all year long is the best way to protect it from harm.