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 5101A SW16D 16 Gallon Direct Spark RV Water Heater

Suburban 5101A SW16D 16 Gallon Direct Spark RV Water Heater

PayPal - $582.00 35m
Suburban 232767 Water Heater Anode Rod

Suburban 232767 Water Heater Anode Rod

PayPal - $17.63 1h 4m
Suburban 521114 Hot water heater Ignitor Board

Suburban 521114 Hot water heater Ignitor Board

PayPal - $249.99 2h 7m
Suburban RV 232317  Water Heater Thermostat- 120V - 140 Degree - NEW! - In Stock

Suburban RV 232317 Water Heater Thermostat- 120V - 140 Degree - NEW! - In Stock

PayPal - $25.09 3h 53m
Suburban 232767 Water Heater Anode Rod

Suburban 232767 Water Heater Anode Rod

PayPal - $18.57 4h 7m
Suburban RV 232306  Water Heater Thermostat- 120V - 130 Degree - NEW! - In Stock

Suburban RV 232306 Water Heater Thermostat- 120V - 130 Degree - NEW! - In Stock

PayPal - $16.91 4h 33m
Suburban 232282 RV Water Heater 12 Volt 130 Degree Thermostat

Suburban 232282 RV Water Heater 12 Volt 130 Degree Thermostat

PayPal - $20.49 5h 10m
FREE 2 DAY SHIPPING: Suburban 232767 Water Heater Anode Rod (Automotive)

FREE 2 DAY SHIPPING: Suburban 232767 Water Heater Anode Rod (Automotive)

PayPal - $16.19 7h 44m
New Suburban SW6P 6 Gallon Pilot Camper RV Water Heater #5031A - Free Ship

New Suburban SW6P 6 Gallon Pilot Camper RV Water Heater #5031A - Free Ship

PayPal - $329.00 13h 11m
Suburban SW10DE Direct Spark Electric 10 Gallon Water Heater -FREE SHIP

Suburban SW10DE Direct Spark Electric 10 Gallon Water Heater -FREE SHIP

PayPal - $427.00 13h 36m
Suburban SW6P 5054A 5117A Water Heater 6 Gallon Trailer Camper RV MANUAL PILOT

Suburban SW6P 5054A 5117A Water Heater 6 Gallon Trailer Camper RV MANUAL PILOT

PayPal - $258.00 13h 38m
Suburban SW6D RV Water Heater DSI Camper Trailer LP Gas w White Door-SHIPS FREE

Suburban SW6D RV Water Heater DSI Camper Trailer LP Gas w White Door-SHIPS FREE

PayPal - $339.00 13h 52m
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 - $15.31 17h 17m
Electrode Suburban RV WATER HEATER ELECTRODE 231898

Electrode Suburban RV WATER HEATER ELECTRODE 231898

PayPal - $5.00 1d 3h 56m
520814 --NEW-- Suburban Water Heater Control Module after SN#953900766

520814 --NEW-- Suburban Water Heater Control Module after SN#953900766

PayPal - $79.99 1d 4h 5m
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 - $15.02 1d 4h 10m
Suburban - Atwood RV Water Heater Door Metal Latch Catch Holder

Suburban - Atwood RV Water Heater Door Metal Latch Catch Holder

PayPal - $6.95 1d 5h 25m
NEW SW12DEL 12 Gallon Suburban Water Heater with Relay

NEW SW12DEL 12 Gallon Suburban Water Heater with Relay

PayPal - $449.99 1d 6h 6m
232229 Suburban *NEW*On Off Switch  water heater-BLACK

232229 Suburban *NEW*On Off Switch water heater-BLACK

PayPal - $10.99 1d 6h 11m
SW10DEL Suburban10 Gallon Water Heater DSI Electric 12VDC Relay No Door

SW10DEL Suburban10 Gallon Water Heater DSI Electric 12VDC Relay No Door

PayPal - $395.99 1d 6h 38m
Suburban water heater models include SW6P,  SW10P, SW6PR, SW10PR, SW6PE, SW10PE, SW6PER, SW10PER, SW6D, SW10D, SW6DE, SW10DE, SW6DEM, SW10DEM