10 Gallon RV Water Heater

What RVs is a 10 gallon water heater compatible with?

A 10 gallon RV water heater fits most Class A, Class C, and larger fifth-wheel models that were originally equipped with a 10 gallon Suburban or Atwood tank. Before ordering, measure your existing door cutout (typically around 12-3/4" x 16-3/4" for 10 gallon units) and confirm the model number stamped on your current unit. This collection covers gas (LP), gas/electric (DSI), and motoraid configurations to match how your rig is plumbed.

What is the difference between a 10 gallon gas water heater and a gas/electric model?

A 10 gallon gas water heater runs on LP only, which is useful when you are boondocking or off shore power. A gas/electric (DSI) model adds a 120V heating element, so you can run on electric while plugged into shore power and save propane. Recovery times on 10 gallon RV units are roughly 16 gallons per hour on LP and about 6 gallons per hour on electric, so most full-timers prefer the dual-fuel setup. If you plan to winterize seasonally, pair the new heater with a kit from our RV winterizing kits collection.

How do I confirm the right replacement 10 gallon hot water heater for my RV?

Pull the model number off the data label on your existing unit (Suburban tags are inside the access door; Atwood/Dometic tags are on the burner housing). The Suburban code reads as SW = Suburban Water Heater, 10 = gallon capacity, D = DSI ignition, E = electric element. Match capacity, ignition type, and door dimensions, then verify the LP and 120V wiring connections on the back of the new unit line up with what is already in the bay.

Does a 10 gallon RV hot water tank need an anode rod?

Only Suburban 10 gallon tanks use an anode rod, because they have a steel tank that needs sacrificial protection. Atwood and Dometic 10 gallon tanks are aluminum-clad and use a plastic drain plug instead. Check and replace the anode annually on Suburban units to extend tank life. Once your water system is sorted, browse the RV electronics collection for monitor panels and switches that pair with the new heater.

How is a 10 gallon RV water heater shipped?

Full 10 gallon water heater units ship via ground freight from our warehouse, typically within 1-2 business days of order. Smaller replacement components (boards, valves, elements) ship standard ground. Orders over $100 qualify for free shipping. If you need help confirming fitment before you order, text or call our team at 817-984-1852.