Tankless on-demand RV water heater with 42,000 BTU LP gas operation, direct spark ignition, compact 6-gallon replacement sizing, and included wall-mount digital control center. Exterior access door is sold separately.
This on-demand water heater includes the wall-mount digital control center, but the exterior access door is not included. For a complete installation, order the correct ST-42/ST-60 access door separately. Common ST-42/ST-60 door options: 6285APW White access door or 6285AEB Black access door.
The Suburban 5481A ST-42 is a tankless on-demand RV water heater designed to provide hot water only when a hot water fixture is opened. Instead of storing hot water in a tank, the ST-42 uses an LP gas burner to heat water as it flows through the unit.
The ST-42 is sized for many existing standard 6-gallon water heater sidewall cutouts, making it a popular aftermarket replacement option for RV owners moving from a tank-style water heater to an on-demand system. The included wall-mount digital control center allows temperature adjustment from inside the RV.
High-output propane burner heats water on demand as it flows through the unit
No storage tank; water is heated only when hot water is being used
Wall-mount digital control center is included for temperature adjustment
Sized to fit many existing standard 6-gallon water heater sidewall openings
The ST-42 is commonly used as an aftermarket on-demand replacement for compatible 6-gallon RV water heater installations. It is suitable for RV owners who want tankless propane hot water and an interior digital temperature control. This model is LP gas only. It does not include a 120V electric heating mode or tank-style hot water storage.
• One Suburban 5481A ST-42 on-demand LP gas RV water heater • Wall-mount digital control center • Installation documentation as supplied by manufacturer
Exterior access door options for ST-42/ST-60 on-demand water heaters: • 6285APW — White access door • 6285AEB — Black access door Confirm door color and fitment before ordering. Existing tank-style water heater doors generally do not carry over to the ST-42 installation.
Tankless water heaters operate differently than tank-style models and require proper water flow, LP gas supply, 12V wiring, venting, exterior sealing, and controller installation. Verify the existing water heater opening, sidewall cutout, wall depth, plumbing alignment, LP gas pressure, wiring, access door, and installation clearances before ordering. Installation should be performed by a qualified RV technician.
The Suburban 5481A ST-42 includes the wall-mount digital control center, but the exterior access door is sold separately. Order 6285APW for white or 6285AEB for black.