Suburban Hot Water Heater Gas & 240V Black Door (SW6DERA) 20.3 Liters

Trusted by RV manufacturers worldwide and built in the USA, the Suburban SW6DERA combines durability, efficiency, and convenience to deliver reliable hot water whenever you need it.

With the ability to run on LPG gas or 240V power, this system gives you flexibility whether you’re off-grid or connected at a powered site. The high-recovery design means more hot water and less waiting, while the porcelain-lined steel tank ensures durability for years of reliable use on the road.

Important Information:

Designed for installation inside caravans and RVs with external access door.
This unit replaces the Suburban SW6DEA hot water heater.

This listing is for the Black door

Features:

Gas and 240V dual heating capability
Direct spark ignition with 12V control
Porcelain-lined steel tank for long service life
Sacrificial anode rod protects tank from corrosion
High recovery rate for consistent hot water supply
Copolymer insulation jacket for improved heat retention
Pressure tested steel tank for strength and durability
Removable outer door for easy servicing and maintenance
Limit switch and reset button accessible behind door
Suitable for installation under seats or inside cupboards
Replacement model for Suburban SW6DEA systems
Spare parts readily available
Includes black external access door
WaterMark certified for Australian compliance

Specifications:

Model: 950-00036-B
Brand: Suburban

Capacity: 20.3 Litres

Heating Source: LPG Gas / 240V Electric
Ignition Type: 12V Direct Spark Ignition

Gas Consumption: 8.7 MJ/h
Gas Inlet: 3/8" SAE

Electrical Supply: 240V – 50Hz AC
Electric Element: 1,440 W – 6 A

Recovery Rate: 40 L/hr (45°C rise)

Pressure Relief Valve: 700 kPa

Cold Water Inlet: 1/2" Female BSP
Hot Water Outlet: 1/2" Female BSP

Anode Thread: 3/4" Female NPT

Dimensions (Unit):
320 mm (H) x 320 mm (W) x 500 mm (D)
(plus pipe connections at rear)

Door Included:
Black door – Overall Dimensions 380 mm x 380 mm

Certification:
WaterMark Certified
RCM Approved
Australian & New Zealand Gas Safety Certified

FAQ

Q: Is the SW6DERA a direct replacement for the older SW6DEA hot water system?
Yes. The Suburban SW6DERA is the WaterMark-approved replacement for the SW6DEA. It has been designed with the same external dimensions and mounting layout, allowing it to fit into the same location without requiring modifications to the caravan. The unit uses the same 325 mm × 325 mm cut-out size and mounting screw pattern as the earlier model.

Q: Will my existing gas and water connections fit the new heater?
In most cases, yes. The SW6DERA uses 1/2" BSP water inlet and outlet connections and a 3/8" SAE gas inlet, positioned the same as the previous SW6DEA model. However, if existing fittings are seized, worn, or a different type, adaptors or replacement fittings may be required, as these are not supplied with the unit.

Q: Is the door included?
Yes – it comes supplied with a black service door.

Q: What is included with the SW6DERA hot water system?

The heater is supplied as a complete unit and includes the 20 L gas/240 V hot water system, black external access door, 12V / 240V switch plate with wiring loom, pressure relief valve, magnesium anode, and an installation manual.

Q: What space do I need to allow when installing this heater?
The main unit measures 320 mm (H) x 320 mm (W) x 500 mm (D), not including the rear pipe connections. The supplied external door measures 380 mm x 380 mm, and the heater is designed to fit a 325 mm x 325 mm wall cut-out, matching the mounting size used on the SW6DEA.

Q: How much hot water does it produce?
It recovers 40L per hour at a 45°C rise

Q: What size fittings are required?

• Water inlet: 3/8” BSP    (SKU 800-02218) 

• water outlet is the same size as  inlet.

• Gas inlet: 3/8” flare 

Q: How often should I check the anode?
Check the anode every 6 months. Replace it when worn to prevent damage. Use only  Suburban  designed anode's rods (SKU 950-01140 or 950-01148).

Q: What is the tank made from?
The tank is made from porcelain-lined, high-tensile steel with a genuine Suburban anode rod for corrosion protection.

Q: What are the power requirements?

• 12V DC for gas ignition

• 240V AC for electric element (6A circuit recommended)