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.
RV Camper Trailer - Suburban Water Heater OEM Anode Rod,  Magnesium 232767

RV Camper Trailer - Suburban Water Heater OEM Anode Rod, Magnesium 232767

PayPal - $12.89 36m
Suburban Black Water Heater Door 4-6 Gallon Tank 6261AEB RV Motorhome

Suburban Black Water Heater Door 4-6 Gallon Tank 6261AEB RV Motorhome

PayPal - $29.99 1h 30m
SUBURBAN WATER HEATER SWITCH 520764

SUBURBAN WATER HEATER SWITCH 520764

PayPal - $9.99 2h 31m
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 2h 31m
SUBURBAN WATER HEATER FLUSH MOUNT DOOR 6259APW

SUBURBAN WATER HEATER FLUSH MOUNT DOOR 6259APW

PayPal - $49.99 2h 31m
SUBURBAN 6 GALLON WATER HEATER SW6D

SUBURBAN 6 GALLON WATER HEATER SW6D

PayPal - $269.99 2h 32m
SUBURBAN 12 GALLON WATER HEATER SW12DEL

SUBURBAN 12 GALLON WATER HEATER SW12DEL

PayPal - $449.99 2h 32m
SUBURBAN 10 GALLON GAS ELECTRIC WATER HEATER SW10DE

SUBURBAN 10 GALLON GAS ELECTRIC WATER HEATER SW10DE

PayPal - $439.99 2h 32m
SUBURBAN WATER HEATER SW6P

SUBURBAN WATER HEATER SW6P

PayPal - $219.99 2h 32m
SUBURBAN SW6DE DIRECT SPARK & ELECTRIC WATER HEATER 6 GALLON

SUBURBAN SW6DE DIRECT SPARK & ELECTRIC WATER HEATER 6 GALLON

PayPal - $399.99 2h 32m
SUBURBAN SW10D DIRECT SPARK WATER HEATER 10 GALLON

SUBURBAN SW10D DIRECT SPARK WATER HEATER 10 GALLON

PayPal - $429.99 2h 32m
Suburban 6259APW Polar White Water Heater

Suburban 6259APW Polar White Water Heater

PayPal - $54.72 3h 56m
Suburban RV 232258 Water Heater Electrode - NEW! - In Stock - Warranty

Suburban RV 232258 Water Heater Electrode - NEW! - In Stock - Warranty

PayPal - $20.00 5h 35m
Suburban 520771 6 Gallon SW Water Heater V Flush Door Installation Kit New

Suburban 520771 6 Gallon SW Water Heater V Flush Door Installation Kit New

PayPal - $13.00 5h 38m
Suburban 520564 Water Heater Large Burner Assembly for V Models (drawer 4)

Suburban 520564 Water Heater Large Burner Assembly for V Models (drawer 4)

PayPal - $60.00 5h 40m
Camco RV Aluminum Anode Rod Suburban Hot Water Heater Tank Camper Travel Trailer

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

PayPal - $15.56 7h 13m
SUBURBAN 10 Gallon Water Heater SW10D-LP Gas w Direct Spark Ignition (DSI)(used)

SUBURBAN 10 Gallon Water Heater SW10D-LP Gas w Direct Spark Ignition (DSI)(used)

PayPal - $100.00 11h 47m
RV NEW!!! Suburban Water Heater On Off Switch Black Trailer RV Motorho

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

PayPal - $9.95 18h 52m
Suburban SW6D Rv Water Heater Camper Trailer Lp Gas w White Door

Suburban SW6D Rv Water Heater Camper Trailer Lp Gas w White Door

PayPal - $279.95 20h 38m
Suburban SW6D RV Water Heater Camper Trailer Lp Gas w Black Door

Suburban SW6D RV Water Heater Camper Trailer Lp Gas w Black Door

PayPal - $286.00 20h 46m
Suburban water heater models include SW6P,  SW10P, SW6PR, SW10PR, SW6PE, SW10PE, SW6PER, SW10PER, SW6D, SW10D, SW6DE, SW10DE, SW6DEM, SW10DEM