Suburban SW6DE 6-Gallon RV Water Heater — DSI Gas + 1,440W Electric Backup, Porcelain-Lined Tank

Suburban SW6DE is a 6-gallon RV water heater that delivers fast hot-water recovery using a 12,000 BTU gas burner with optional 1,440W electric backup and a porcelain-lined tank for long life.

This compact Suburban SW6DE combines direct spark ignition gas performance with an optional electric element so you can heat water at the campsite, on shore power or with a generator. Built with a porcelain-lined steel tank and a replaceable anode rod, it resists corrosion similarly to residential water heaters while keeping installation footprints small. Dual-power flexibility plus Suburban’s flue-tube heat transfer design yields quicker recovery and reduced cold-water cycling — handy for showers, dishes and daily RV chores.

How quickly will this heater provide hot water?

The SW6DE is engineered for high recovery. The gas burner produces 12,000 BTU/h and the flue tube design maximizes heat transfer so the tank replenishes hot water faster than many competitors. If you add the electric element, shore power raises recovery for lighter loads.

• Gas input: 12,000 BTU/h, recovery ~10.1 GPH
• Electric element: 1,440W, recovery ~6.1 GPH
• Industry-leading 6-gallon capacity for compact RVs

What construction features protect the tank from corrosion?

Suburban uses a porcelain-lined steel tank to shield metal surfaces from heated water’s corrosive effects, mirroring durable residential designs. A replaceable anode rod absorbs electrolytic action and doubles as a convenient drain, simplifying maintenance and prolonging service life.

• Porcelain-lined interior prevents direct metal exposure to water
• Replaceable anode rod reduces internal corrosion and eases servicing
• Every tank is pressure-tested twice during manufacturing for integrity

Which power and control options are available for everyday use?

The SW6DE supports Direct Spark Ignition (DSI) gas operation and an optional electric heating element so you can run on gas, electric, or both where permitted. A visible indicator light option helps confirm system status; controls are compact for tight RV compartments.

• DSI gas ignition for reliable burner starts
• Optional 1,440W electric element for shore power use
• Indicator light available to show operating status at a glance

How big is the unit and how does it fit into RV spaces?

The SW6DE is compact and designed to fit standard RV cutouts, easing replacement or retrofit in many units. With modest dimensions and a cutout-matching profile, it installs where small tank heaters are typically mounted, saving space without sacrificing recovery speed.

• Overall dimensions: 12.69" x 12.69" x 19.19"
• Cutout dimensions: 12.75" x 12.75" x 19.19" for straightforward insertion
• Lightweight footprint suited for cabinets or utility closets in RVs

Who this is for: The Suburban SW6DE 6-Gallon water heater suits RV owners who need a compact unit with fast hot-water recovery and the option to run on gas or electric power. Ideal for small to mid-size motorhomes, travel trailers and bumpers-pull rigs, it’s a good match for travelers who value durability, straightforward maintenance and flexibility when hookups vary. Backed by a 2-year limited warranty and a 3-year tank limited warranty, it’s engineered for long-term use on the road.