Copron Classico 1000w/1 kw Copper Immersion Water Heater Rod (1 Year Warranty) Size:1000w   Your Dependable Hot Water Resource is space a constraint and is budget your worry? The Immersion rod water heater is here. Compact in size and powerful heating. Low on cost plus an energy saver. Get it all in the immersion rod storage water heater. Material and Measurements. Are you afraid that the coil may get corroded because it is frequently immersed in water? Don’t be. This Immersion water heater rod have some quality material that will make this product usable for a longer period of time.