Seaward 20 Gallon Water Heater with Front Heat Exchanger Stainless Steel – 120V
Whale S1900 marine water heater with front heat exchanger features a stainless steel jacket and an aluminum tank. This vertically oriented water heater is equipped with one hold-down bracket on each side of the base.
Features:
- Heat Exchanger: Front
- Exterior/Jacket: Stainless Steel
- Tank Material: Aluminum Alloy
- Capacity: 20 Gallon
- Height: 27 Inches
- Depth: 20 Inches
- Width: 20.25 Inches
- Orientation: Vertical
- Voltage: 120-Volts

![Whale Seaward 20 Gallon Hot Water Heater w/Front Heat Exchanger - Stainless Steel - 240V [S1950]](https://www.boatmotorwarehouse.com/wp-content/uploads/2026/10/whale-seaward-20-gallon-hot-water-heater-w-front-heat-exchanger-stainless-steel-.webp)
![Whale Seaward 6 Gallon Hot Water Heater - White Epoxy - 240V - 3000W [S650EW-3000]](https://www.boatmotorwarehouse.com/wp-content/uploads/2026/10/whale-seaward-6-gallon-hot-water-heater-white-epoxy-240v-3000w-s650ew-3000.webp)
![Kuuma 20-Gallon Water Heater 240V L1L2 Wiring Front Heat Exchange - Horizontal [11897]](https://www.boatmotorwarehouse.com/wp-content/uploads/2026/10/kuuma-20-gallon-water-heater-240v-l1l2-wiring-front-heat-exchange-horizontal-118.webp)
![Quick Nautic Boiler B3 - 5.3 Gallon - 12V - 300W [FLB32003S120A00]](https://www.boatmotorwarehouse.com/wp-content/uploads/2026/10/quick-nautic-boiler-b3-5-3-gallon-12v-300w-flb32003s120a00.webp)