Suburban RV water heaters use a porcelain-lined, steel water tank that has an anode rod to offset electrolytical effects. According to Suburban this may double, or triple the hot water heater life. Also Suburban gas waters feature 12,000 BTUH for a rapid recovery rate, and combo gas/electric water heaters utilize a 1,440-watt heating element to recover an extra 6 gallons of hot water per hour.
 
For additional insulation, Suburban uses a copolymer insulation jacket which the company claims will retain heat better than the cardboard insulation used on competing RV hot water heaters.
Suburban 6259ACW Colonial White Water Heater Access Door

Suburban 6259ACW Colonial White Water Heater Access Door

PayPal - $56.31 2h 5m
RV NEW!!! Suburban Water Heater On Off Switch Black Trailer RV Motorhome

RV NEW!!! Suburban Water Heater On Off Switch Black Trailer RV Motorhome

PayPal - $49.95 6h 16m
Suburban 6255APW   6 Gal. SW Water Heater Access Door Flush Mount Polar White

Suburban 6255APW 6 Gal. SW Water Heater Access Door Flush Mount Polar White

PayPal - $46.99 8h 36m
Electric Conversion Kit LIGHTNING ROD Water Heater 10 gallon Suburban Atwood New

Electric Conversion Kit LIGHTNING ROD Water Heater 10 gallon Suburban Atwood New

PayPal - $84.99 9h
Electric Conversion Kit LIGHTNING ROD Water Heater 6 gallon Suburban Atwood

Electric Conversion Kit LIGHTNING ROD Water Heater 6 gallon Suburban Atwood

PayPal - $79.99 9h
Suburban 10 gallon water heater  SW10DE Reconditoned

Suburban 10 gallon water heater SW10DE Reconditoned

PayPal 1 $350.00 9h 55m
Suburban 232768 Water Heater Aluminum Anode Rod

Suburban 232768 Water Heater Aluminum Anode Rod

PayPal - $18.62 10h 32m
6259AEB SW model 10,  12,  16 Gal Flush Mount -BLACK-Suburban Water Heater Door

6259AEB SW model 10, 12, 16 Gal Flush Mount -BLACK-Suburban Water Heater Door

PayPal - $44.99 10h 44m
New Camco Aluminum Anode Rod Suburban Mor-Flo Hot Water Heater Tank

New Camco Aluminum Anode Rod Suburban Mor-Flo Hot Water Heater Tank

PayPal - $30.42 12h 10m
Brand New Suburban RV Water Heater Standard Door,  10 Gallon,  B Style,  White

Brand New Suburban RV Water Heater Standard Door, 10 Gallon, B Style, White

PayPal - $51.25 12h 34m
Suburban | 161112 | RV Water Heater Thermostat Gas Control

Suburban | 161112 | RV Water Heater Thermostat Gas Control

PayPal - $231.51 12h 48m
NEW~NOS~Suburban 520773 Reignitor Kit  for SW series water heater

NEW~NOS~Suburban 520773 Reignitor Kit for SW series water heater

PayPal - $43.00 13h 33m
SUBURBAN Water Heater DOOR - White Radius A-Style 4 & 6 Gallon Standard Mount

SUBURBAN Water Heater DOOR - White Radius A-Style 4 & 6 Gallon Standard Mount

PayPal - $42.65 13h 34m
SW6DE Suburban 6 gallon RV water heater

SW6DE Suburban 6 gallon RV water heater

PayPal 4 $227.00 13h 40m
Suburban DSI Water Heater Electrode Wire 232456 All SW models

Suburban DSI Water Heater Electrode Wire 232456 All SW models

PayPal - $15.00 14h 12m
Quick Products QP-MAR9 Magnesium Anode Rod for Suburban and Mor-Flo Water Heater

Quick Products QP-MAR9 Magnesium Anode Rod for Suburban and Mor-Flo Water Heater

PayPal - $11.86 14h 13m
SUBURBAN 10 GALLON GAS ELECTRIC WATER HEATER SW10DE

SUBURBAN 10 GALLON GAS ELECTRIC WATER HEATER SW10DE

PayPal - $439.99 16h 29m
SUBURBAN WATER HEATER SWITCH 520764

SUBURBAN WATER HEATER SWITCH 520764

PayPal - $9.99 16h 30m
SUBURBAN Water Heater DOOR - White Radius A-Style 4 & 6 Gallon Standard Mount

SUBURBAN Water Heater DOOR - White Radius A-Style 4 & 6 Gallon Standard Mount

PayPal - $38.69 16h 43m
SUBURBAN SW6DE DIRECT SPARK & ELECTRIC WATER HEATER 6 GALLON

SUBURBAN SW6DE DIRECT SPARK & ELECTRIC WATER HEATER 6 GALLON

PayPal - $399.99 16h 43m
Suburban water heater models include SW6P,  SW10P, SW6PR, SW10PR, SW6PE, SW10PE, SW6PER, SW10PER, SW6D, SW10D, SW6DE, SW10DE, SW6DEM, SW10DEM