Evaporative Cooler Scale Preventer Puck

The Evaporative Cooler Scale Preventer Puck is designed to protect evaporative coolers against damaging scale. Just place the puck in the water pan away from the pump and replace every 3 months.

• Citrus boost to help remove any existing limescale
• Polyphosphate slow-release pearls for long lasting protection against limescale
• Lasts up to 3 months
• Proudly made in the USA