Unlike pool owners in colder climates, Fresno residents don't need to fully winterize their pools with covers and antifreeze. However, Fresno's winter months (November through February) do require adjusted maintenance to protect your pool and save money.
Reduce Chemical Usage
Cooler water temperatures mean slower chemical reactions. You can typically reduce chlorine usage by 30-50% during winter months. However, don't stop chemical treatment entirely—algae can still grow in Fresno's mild winters, especially during warm spells.
Adjust Filtration Time
Reduce pump run time to 4-6 hours per day during winter. Water circulates more slowly in cooler temperatures, and reduced bather loads mean less filtration is needed. This can significantly reduce your electricity bill.
Watch for Rain and Debris
Fresno's rainy season (December through March) can introduce contaminants and dilute your pool chemistry. After heavy rains, test your water and adjust chemicals as needed. Keep up with skimming and debris removal, especially if you have deciduous trees nearby.
Protect Your Equipment
While Fresno rarely freezes, occasional cold snaps can damage exposed plumbing and equipment. Insulate exposed pipes and consider running your pump during freezing nights to prevent ice damage.
Plan Spring Startup
Use the winter months to plan any upgrades or repairs for the spring season. Schedule equipment inspections, consider energy-efficient upgrades, and book your spring service early to avoid the rush.