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Boat & Marine Water Heaters
55 resultsFisheries Supply is your premier supplier of marine water heaters from the top brands. We offer a full range of boat water heaters in a variety of sizes and styles – something to fit even the most challenging yacht. We also offer a wide selection of marine water heater parts such as pressure relief valves, anodes and more to keep your hot water heater running for the long term. Shop now and save or browse our great selection of marine faucets.
Kuuma Products
Kuuma Water Heaters
Available in 7 options
Isotherm
110V/750W Heating Element
SKU: 197811 | Item ID: ISO SEE00014HA
Isotherm
Isotemp Basic Water Heaters
Available in 6 options
Isotherm
Isotemp Slim Water Heaters
Available in 3 options
Whale
Water Heater 6/11/20 Gal. - Front Heat Exchanger - Galvanised - Horizontal
Available in 3 options
Isotherm
Isotemp Slim Square Water Heater
SKU: 180778 | Item ID: ISO 601623QX00003
Whale
Water Heater 6/11/20 Gal - Rear Heat Exchanger - Stainless
Available in 3 options
Isotherm
Isotemp Spa Water Heaters
Available in 5 options
Whale
Pressure Temperature Relief Valve for Seaward Water Heaters
SKU: 98259 | Item ID: S/W 75974
Isotherm
10" Braided Steel Water Heater Hose
SKU: 1022506 | Item ID: ISO SFE00021AA
Raritan
1700 Series Water Heater
Available in 8 options
Torrid
MVS 20 IX Marine Vertical Water Heater - 20 Gallons
Available in 3 options
Torrid
MVS 10 IX Marine Vertical Water Heater - 10 Gallons
Available in 3 options
Torrid
MVS 30 IX Marine Vertical Water Heater - 30 Gallons
Available in 3 options
Whale
Water Heater 6/11/20 Gal - Front Heat Exchanger - Stainless - Horizontal
Available in 3 options
Torrid
MHS 10 IX Marine Horizontal Water Heater - 10 Gallon
SKU: 1011008 | Item ID: TOR MHS10IX120/1500
Torrid
Torrid Water Heater Elements
Available in 2 options
Raritan
1700 Series Water Heater Element
Available in 2 options
Seaward Products
Heating Element
SKU: 87625 | Item ID: S/W 74031
Whale
Water Heater 3 Gal. - 12V Electric Only
SKU: 442118 | Item ID: S/W S360EW
Isotherm
Safety Valve
SKU: 184649 | Item ID: ISO SFD00023AA
Whale
Water Heater 6/11 Gal - Rear Heat Exchanger - Galvanised
Available in 2 options
Torrid
MVS 15 IX Marine Vertical Water Heater - 15 Gallons
Available in 3 options
Torrid
MVW 20 IX Marine Vertical Water Heater - 20 Gallons
Available in 3 options
Torrid
MVS 6 IX Marine Vertical Water Heater - 6 Gallons
Available in 3 options
Torrid
MHS 6 IX Marine Horizontal Water Heater - 6 Gallons
SKU: 1011005 | Item ID: TOR MHS6IX120/1500
Isotherm
Water Heater Mixing Valve
SKU: 215269 | Item ID: ISO SFD000011AA
Kuuma Products
Water Heater Thermostat
SKU: 207318 | Item ID: KUM 11930
Torrid
MVS 17 IX Marine Vertical Water Heater - 17 Gallons
Available in 3 options
Whale
Water Heater 20 Gal. - Front Heat Exchanger - Stainless - Vertical
SKU: 50126 | Item ID: S/W S1900
Torrid
Thermostat for Water Heaters
SKU: 387326 | Item ID: TOR TF
Raritan
Anodes for 1700 Series Water Heaters
Available in 2 options
Torrid
Water Heater Anodes
Available in 4 options
Camco
Quick Turn Winterizing Water Heater By-Pass Kit
SKU: 1036395 | Item ID: CMC 35983
Isotherm
Gasket Set for Basic & Slim Water Heaters
SKU: 207738 | Item ID: ISO SDF00025AA
Isotherm
Mixing Valve for Regular, Basic and Slim Water Heaters
SKU: 388407 | Item ID: ISO SFD00011AA
Kuuma Products
Water Heater Hose
SKU: 173556 | Item ID: KUM 15009
Raritan
Thermostat for 1700 Series Water Heaters
SKU: 48513 | Item ID: RAR WH16
Seaward Products
80336 Conversion Kit
SKU: 1012275 | Item ID: S/W 80336
Raritan
Pressure Temperature Relief Valve for 1700 Series Water Heaters
SKU: 26507 | Item ID: RAR WH3
Torrid
Temperature Pressure Relief Valve for Torrid Water Heaters
SKU: 428719 | Item ID: TOR TP100-210
Torrid
Tank Booster Pro - Mixing Valve Kit
SKU: 201502 | Item ID: TOR TMV90-160
Camco
Quick Hose Connect - Brass
SKU: 1003444 | Item ID: CMC 20136
Isotherm
1/2" BSP to 1/2" NPT Adapter
SKU: 1018328 | Item ID: ISO SFB00002AA
Torrid
MVS 50 2IX 2EL Explorer Series Marine Water Heater, Vertical - 50 Gallons
SKU: 1018787 | Item ID: TOR MVS502IX2EL240/1500_240/4000
