ST-42 Tankless Water Heater (Black)


The Suburban ST-42 and ST-60 Tankless Water Heaters provide an endless supply of hot water at a controlled temperature as set by the RV owner. The tankless feature saves energy by only engaging the burners when water is needed…be it for a hot shower, clean dishes or for hosing off after a day at the beach. The unit comes ready for set-up with an included wall mount digital control center. Designed with a wide array of safety & protection features.


  • Flame Out Protection is a safety feature that will cut gas the supply immediately due to low propane pressure or burner malfunction
  • Scald Protection is managed through an internal high temperature kill switch to protect against a thermostat malfunction
  • Max temperature of 131° F
  • A child lock prevents outlet temperatures more than 113° F
  • Automatic Fan Monitoring cuts gas supply should the air flow or combustion air supply be interrupted
  • Active Freeze Protection from unexpected low temperatures when power and propane are available
  • Pressure Release Safety Valve
  • Voltage Protection shuts down the unit if low/high or overcurrent voltage is detected
  • Worry-Free two-year limited warranty


Dimensions13 1/8” x 13 1/8” x 13"
BTU/h Inputs42,000
Warranty2 Year Limited Warranty
Water Heating


Please Note: Suburban Gas Appliances are to be installed and/or serviced by a qualified service technician.

If you are not a qualified service technician or an approved Suburban Service Agency, please click here to locate your nearest service center.