Attwood Whale F1150W Seaward Marine Water Heater

AttwoodSKU: F1150W

Sale price$534.67 Regular price$559.99 Save $25.32
3 In stock Free Shipping


The Attwood Whale F1150W is a 240V 11-gallon Seaward Marine Water Heater. See below for details.

Multiple configurations are available depending on your installation requirement. A electric/ heat exchanger combination and an electric-only model are available. A 120 Volt AC system is available in addition to the 240V. A range of tank capacities are available including: 3, 6, 11, 20, 28 gallons. Both vertical and horizontal mounting are available. Exterior jackets are available in stainless steel, marine galvanized steel, and white epoxy-coated aluminum.


  • Mounting brackets welded to inner tank
  • Double-wall heat exchangers
  • Large ¾” drain valve
  • Robust Manufacturing
  • Easy-to-use-safety controls
  • Integrated pressure relief valve
  • Temperature and pressure drain tube included
  • Magnesium anodes are sold separately (use for a longer tank life)
  • Ignition protected

Meets or exceeds all ABYC, CE, and UL standards.


circuit breaker 10 amp dual breaker (240 Volt AC)
exterior jacket White epoxy coated aluminum
heat exchanger position Front
orientation Horizontal
power 240 Volt AC / 1500 Watts
psi rating 150 PSI
tank capacity 11 Gallons
tank material Aluminum

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