Clean the pool

Thoroughly clean the pool by brushing the walls and floor, and vacuuming any debris or sediment.

Balance the water chemistry

Test and balance the water chemistry to ensure it's properly balanced before closing the pool. Adjust the pH, alkalinity, and sanitizer levels as needed.

Lower the water level

Use a submersible pump or the pool's filtration system to lower the water level below the skimmer and return jets. Follow local regulations for the appropriate water level.

Drain equipment

Drain water from the pool pump, filter, heater, and any other equipment by removing drain plugs or using a compressor or shop vac to blow out the lines. Consult equipment manuals for specific instructions.

Winterize plumbing lines

If applicable, use pool antifreeze to protect plumbing lines from freezing. Follow the manufacturer's instructions for the proper amount and application method.

Remove accessories

Remove any pool accessories, such as ladders, handrails, or diving boards, and store them in a safe place.

Install a winter cover

Place a durable winter cover over the pool, ensuring it's securely fastened. Choose a cover specifically designed for fiberglass pools.

Winterize the skimmer

If your pool has a skimmer, install a skimmer winterizing plate or plug to protect it from freezing and damage.

Monitor the pool

Throughout the winter, periodically check the pool to ensure the cover is secure and there are no signs of damage or excessive water accumulation.

Spring pool opening

When spring arrives, follow the appropriate steps for opening and preparing the pool for the swimming season. Find helpful tips here.