Only use once. Not required. The Bestway 2.8kW Electric Swimming Pool Heater is designed for above ground pools up to 15ft in diameter. With its electric power source and heating system, this heater efficiently warms up the water in your pool to provide a comfortable swimming experience. The brand's reputation for quality ensures a reliable and durable product that will keep your pool water at the perfect temperature all year round. Ideal for garden and patio use, this pool heater is a must-have accessory for any swimming pool owner.
eBay