First, adjust pool pH to 7.2-7.8. This will prevent staining, scaling and algae growth. Next, shock the pool following product directions.

Run the filter for 24-48 hours depending on how dirty the water is.

Skim out floating debris and vacuum the pool thoroughly.

Add an algaecide to prevent algae from forming before the water has frozen.

Follow your pool manufacturer’s directions for lowering your water level. You should never fully drain a swimming pool. In most cases, it’s safe to lower the water level approximately 1” beneath the skimmer. Next, blow the water out of the pump, pipes, hoses, and any vessel that holds water to prevent damage that can occur when the water expands from freezing. Water can expand between 9-10% due to cold temperatures.

Turn off the filter pump and drain the pump, filter, heater, and other equipment. Store equipment to prevent damage. Follow the manufacturer’s directions for lubrication and proper covering.

Turn off all power to the support equipment and remove fuses or turn the circuit breakers to “off.”

Remove and store accessories. If you have a slide or diving board, check with your pool professional.

Cover the pool securely with a seasonal safety cover. Be sure that the edge of the cover is sealed so that wind does not get under it. A good pool cover resists water, weather, and pool chemicals and keeps out leaves and other debris.

Make sure to check your freeze protection. It can often be a manual dial or built into your pool pump or pool automation. As the temperature begins to drop, ensuring your freeze protection is working will prevent any cracked or damaged equipment.

Cut your filter running time in half and reduce the amount of run time on the pump. If possible, set the run time to be during the evening when it is coldest so that when your freeze protection activates, it is also counting toward the amount of time needed to filter the pool. This results in a little cost savings that can add up if done properly.

Adjust your pH and chlorine levels. Keep pool pH between 7.2-7.8 and test regularly to keep free available chlorine between 1.0 and 3.0 parts per million.

Follow the manufacturer’s instructions for proper care and maintenance of your pool equipment, even during this time of reduced use. Consider winterizing additional pool features you may have such as slides and other accessories to prevent damage.

Unless you cover your pool, clean the skimmer weekly, maintain the filter according to the manufacturer’s instructions, and vacuum as needed.

Covering your pool will keep out debris and reduce the need for chlorine. Before covering it, shock treat the water according to the chemical manufacturer’s directions.