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RV water heaters provide hot water for showers, dish washing, and general use. Traditional tank water heaters store heated water ready for use; tankless (on-demand) systems heat water only as you need it. Many RV water heaters operate on both LP gas and 120V electric, giving you heating options depending on your power situation.

What to Know Before You Buy

  • Tank size affects recovery time and continuous hot water availability—6 gallons is standard; 10+ gallons suits larger rigs.
  • Dual-fuel (gas/electric) models provide flexibility; DSI (direct spark ignition) eliminates pilot lights.
  • Tankless water heaters provide endless hot water but have minimum flow requirements and may need system modifications.
  • Replacement water heaters must fit your existing door cutout—measure the opening before ordering.

Shopping for a water heater replacement or upgrade? Let us know your current model and hot water needs and we'll suggest options.

Free shipping on most orders $99+ (US lower 48). Expert support and 90-day returns.

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Camco 11673 RV Hot Water Hybrid Heater - 6 Gallon Camco RV Hot Water Hybrid Heater - 6 Gallon In Stock
: $139.49
Free Shipping 25 in stock!
Dometic Gas Valve For 6-Gallon Water Heaters Dometic 92078 Gas Valve For 6-Gallon Water Heaters In Stock
: $233.99
Free Shipping 25 in stock!
Dometic 92089 Gas Valve For 10-Gallon Water Heaters Dometic Gas Valve For 10-Gallon Water Heaters In Stock
: $194.99
Free Shipping 20 in stock!
Suburban Relay For RV Water Heaters SW4/6/10/12/16 DEL Suburban For RV Water Heaters SW4/6/10/12/16 DEL In Stock
: $12.80
36 in stock!
Dometic Atwood Ignition Control Circuit Board Kit For Water Heaters - Gas/Electric - Direct Replacement Dometic Atwood Ignition Control Circuit Board Kit For Water Heaters - Gas/Electric - Direct Replacement In Stock
: $97.99
40 in stock!
Suburban 234229 Wall Switch With Light Assembly For DE Water Heaters - Black Suburban 234229 Wall Switch With Light Assembly For DE Water Heaters - Black In Stock
: $11.49
33 in stock!
Suburban 521099 12V DC 3G Fan Control Board Suburban 521099 12V DC 3G Fan Control Board In Stock
: $89.99
35 in stock!
Suburban 232456 Water Heater Electrode Wire For SW Series Suburban Water Heater Electrode Wire For SW Series In Stock
: $14.49
39 in stock!
Dometic 91547 Thermostat Switch For Atwood Water Heater XT Dometic Thermostat Switch For Atwood Water Heater XT In Stock
: $18.49
30 in stock!
Camco 11630 RV Water Heater Drain Plug, 1/2" NPT - 2 Pack Camco RV Water Heater Drain Plug, 1/2" NPT - 2 Pack In Stock
: $6.16
34 in stock!
Camco 11633 RV Water Heater Drain Plug Kit Camco RV Water Heater Drain Plug Kit In Stock
: $11.99
36 in stock!
Camco 10023 RV Water Heater Continuity Tester Camco RV Water Heater Continuity Tester In Stock
: $13.49
2 in stock!
Camco 11593 Anode Rod For Atwood Water Heaters - 9.5" Camco Anode Rod For Atwood Water Heaters - 9.5" In Stock
: $24.99
38 in stock!
Camco 10473 Temperature & Pressure Relief Valve - 3/4" With 4" Probe Camco Temperature & Pressure Relief Valve - 3/4" With 4" Probe In Stock
: $15.99
34 in stock!
Suburban  233514 RV Hot Water Tank Magnesium Anode Rod Suburban RV Hot Water Tank Magnesium Anode Rod In Stock
: $16.33
32 in stock!
Suburban 233516 Water Heater Aluminum Anode Rod, 9" Length, 3/4" Thread Suburban 233516 Water Heater Aluminum Anode Rod, 9" Length, 3/4" Thread In Stock
: $16.33
38 in stock!
Camco 08773 RV Gas Pilot Assembly For Atwood Water Heaters - 9" Camco 0 RV Gas Pilot Assembly For Atwood Water Heaters - 9" In Stock
: $44.99
1 in stock!
Suburban Mfg 521072 Solenoids For Water Heater Gas Valve 161109 Suburban 521072 Solenoids For Water Heater Gas Valve 161109 In Stock
: $9.71
30 in stock!
Suburban 232791 Water Heater Electrode Wire For V Series Suburban Water Heater Electrode Wire For V Series In Stock
: $7.99
15 in stock!
Atwood RV Water Heater Relay For GH/GC Series - Direct Replacement Atwood RV Water Heater Relay For GH/GC Series - Direct Replacement In Stock
: $12.50
3 in stock!
Atwood 90960 Replacement Flue Box Assembly Atwood Replacement Flue Box Assembly In Stock
: $46.49
2 in stock!
Dometic 93221 Burner For Atwood 10-Gallon Water Heaters Dometic Burner For Atwood 10-Gallon Water Heaters In Stock
: $38.99
10 in stock!
Atwood RV Water Heater Jade Pilot Assembly - Direct Replacement Atwood RV Water Heater Jade Pilot Assembly - Direct Replacement In Stock
: $8.99
2 in stock!
Dometic 91638 Burner For Atwood 6-Gallon Water Heaters Dometic Burner For Atwood 6-Gallon Water Heaters In Stock
: $33.99
37 in stock!
Atwood 91604 Water Heater Pressure Relief Valve - 1/2" NPT Atwood Water Heater Pressure Relief Valve - 1/2" NPT In Stock
: $32.49
40 in stock!
Atwood 91447 Water Heater Thermostat Assembly With High Limit Control Atwood 91447 Water Heater Thermostat Assembly With High Limit Control In Stock
: $21.99
38 in stock!
Atwood Thermo Disc 110 Volt Water Heater Thermostat, 120 Degrees, Front Mount Atwood Thermo Disc 110 Volt Water Heater Thermostat, 120 Degrees, Front Mount In Stock
: $12.49
30 in stock!
Atwood 91858 Water Heater Access Door Mounting Bracket Kit Atwood Water Heater Access Door Mounting Bracket Kit In Stock
: $13.99
30 in stock!