Whale Marine Whale Seaward 6 Gallon Hot Water Heater w/Rear Heat Exchanger - Stainless Steel - 120V - 1500W MSRP: Price: 2099-12-31 $607.28 Seaward 6 Gallon Hot Water Heater with Rear Heat Exchanger - Stainless Steel - 120V - 1500WWhale Electric Water Heaters includes models with the very latest technology. All heaters are manufactured... Add to Cart Add to Cart