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Suburban Mfg
Suburban 525001 Electric Element Switch with Gasket – SW-Series Water Heaters
$19.79$18.00 -
Suburban Mfg
Suburban 090681 Electric Element Cover with Gasket – SW Series Water Heaters
$19.79$18.00 -
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SW4D
Suburban SW4D RV Water Heater Parts
The Suburban SW4D is a 4-gallon LP gas-only direct spark ignition (DSI) tank water heater. This page collects the replacement parts we carry for it, sorted into 8 part categories.
Suburban SW4D at a glance
- Tank capacity: 4 gallons
- Fuel: LP gas only
- Ignition: direct spark ignition (DSI)
- Gas input: 9,000 BTU/hr
- Tank: porcelain-lined steel, uses an anode rod
Shop by part type
- All Parts (18)
- Gas Burner (3)
- AC Heating Element (4)
- Anode Rod (2)
- Pressure Relief Valve (2)
- Electrode Wire (1)
- Hardware (3)
- Flue & Combustion Parts (3)
Parts that most often need replacing
- anode rod (magnesium 233514 / aluminum 233516)
- electrode and spark cable
- thermostat / ECO high-limit
Maintenance tip
Pull and inspect the anode rod about once a year (sooner with high iron/sulfate water), replace it when mostly eaten away, and drain the tank by removing the anode for storage or winterizing.
To verify compatibility, contact Suburban directly with your water heater model and serial number.