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 SW10DE Direct Spark Electric 10 Gallon Water Heater-WITH DOOR

Suburban SW10DE Direct Spark Electric 10 Gallon Water Heater-WITH DOOR

PayPal - $445.00 1h 12m
Used Suburban SW6DE  6 Gallon Water Heater Foam Jacket

Used Suburban SW6DE 6 Gallon Water Heater Foam Jacket

PayPal - $19.95 1h 16m
Suburban Water Heater Ignition Control Circuite Module Board SW4D  SW6D and more

Suburban Water Heater Ignition Control Circuite Module Board SW4D SW6D and more

PayPal - $94.99 1h 28m
Suburban 6 gal RV Water Heater   140194

Suburban 6 gal RV Water Heater 140194

PayPal - $389.92 2h 26m
Suburban 010843 RV Water Heater Burner Assembly With Orifice

Suburban 010843 RV Water Heater Burner Assembly With Orifice

PayPal - $18.54 3h 47m
Suburban Water Heater SW6DE 6 Gallon

Suburban Water Heater SW6DE 6 Gallon

PayPal - $275.00 5h 17m
Suburban 4&6 Gallon Water Heater Replacement Door for RV   Camper   Trailer

Suburban 4&6 Gallon Water Heater Replacement Door for RV Camper Trailer

PayPal - $44.95 7h 58m
Suburban 4&6 Gallon Water Heater Replacement Door for RV   Trailer   Camper

Suburban 4&6 Gallon Water Heater Replacement Door for RV Trailer Camper

PayPal - $44.95 7h 59m
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 8h 1m
SUBURBAN SW10D DIRECT SPARK WATER HEATER 10 GALLON

SUBURBAN SW10D DIRECT SPARK WATER HEATER 10 GALLON

PayPal - $429.99 8h 1m
SUBURBAN WATER HEATER DOOR STYLE B

SUBURBAN WATER HEATER DOOR STYLE B

PayPal - $40.00 8h 1m
SUBURBAN SW6DE DIRECT SPARK & ELECTRIC WATER HEATER 6 GALLON

SUBURBAN SW6DE DIRECT SPARK & ELECTRIC WATER HEATER 6 GALLON

PayPal - $399.99 8h 1m
Suburban SW10D RV Water Heater Gas 10 Gallon,  DSI,  Trailer Camper 5125A Propane

Suburban SW10D RV Water Heater Gas 10 Gallon, DSI, Trailer Camper 5125A Propane

PayPal - $429.99 12h 31m
Suburban RV Water Heater PC Board Part 520814

Suburban RV Water Heater PC Board Part 520814

PayPal - $117.49 13h 17m
Suburban SW6D RV DSI Water Heater Camper Trailer LP Gas #5120A

Suburban SW6D RV DSI Water Heater Camper Trailer LP Gas #5120A

PayPal - $343.39 21h
NEW RV Aluminum Anode Rod Suburban Hot Water Heater Tank Camper Travel Trailer

NEW RV Aluminum Anode Rod Suburban Hot Water Heater Tank Camper Travel Trailer

PayPal - $21.00 21h 48m
RV Trailer Aluminum Anode Rod Suburban Heater Tank Hot Water Travel Camper New

RV Trailer Aluminum Anode Rod Suburban Heater Tank Hot Water Travel Camper New

PayPal - $21.95 1d 1h 6m
Suburban Polar White 10,  12,  16 Gallon Water Heater Access Door 6259APW

Suburban Polar White 10, 12, 16 Gallon Water Heater Access Door 6259APW

PayPal - $47.89 1d 2h 10m
Suburban - 6259AEB  Black 10 Gal Suburban Water Heater Door

Suburban - 6259AEB Black 10 Gal Suburban Water Heater Door

PayPal - $45.00 1d 2h 14m
TRAILER CAMPER RV MOTORHOME BUS SUBURBAN WATER HEATER DOOR 4-6 GALLON WHITE

TRAILER CAMPER RV MOTORHOME BUS SUBURBAN WATER HEATER DOOR 4-6 GALLON WHITE

PayPal - $34.99 1d 2h 23m
Suburban water heater models include SW6P,  SW10P, SW6PR, SW10PR, SW6PE, SW10PE, SW6PER, SW10PER, SW6D, SW10D, SW6DE, SW10DE, SW6DEM, SW10DEM