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United States
HomeProductsHomeownersWater HeatersTankless Water Heaters

Tankless Water Heaters

With a full line of Rheem® tankless water heaters to choose from, there’s sure to be one that’s the right fit for your family.
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Professional Classic Series Tankless Electric RTEX-08 kW
1.4-1.4 GPM
  • UEF up to .96
  • Flow rate 0.8 - 1.4 GPM
  • Durable, lightweight engineered polymer shell does not rust or corrode.
  • Digital thermostatic temperature controls in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C)
Professional Classic Series Tankless Electric RTEX-13 kW
2.3-2.3 GPM
  • UEF up to .96
  • Flow rate 1.3 - 2.3 GPM
  • Durable, lightweight engineered polymer shell does not rust or corrode.
  • Digital thermostatic temperature controls in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C)
Professional Classic Series Tankless Electric RTEX-24 kW
4.3-4.3 GPM
  • UEF up to .94
  • Flow rate 2.4 - 4.3 GPM
  • Durable powder-coated shell with a galvanized steel backplate
  • Digital thermostatic temperature controls in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C)
Professional Classic Series Tankless Electric RTEX-3.5, RTEX-06 kW
  • UEF up to 0.95
  • Flow Rate up to 1.6 GPM (See specification sheet for the GPM on each model)
  • Digital temperature control in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C)
  • Two 0.35 GPM aerators are included for optimal temperature output and performance
Professional Classic Series: Tankless Electric RTEX-04T
  • Efficient Design – UEF up to .95 and advanced self-modulating technology only consumes the power needed to satisfy hot water demand
  • Flow Rate up to 0.25 GPM
  • Digital thermostatic temperature controls in 1-degree increments ranging from80°F - 140°F (26°C - 60°C)
  • Includes two optional 0.35 GPM aerators (flow restrictors) for optimal temperature output and performance
  • Stainless steel heat exchanger reduces corrosion for long life
  • Brass 1/2" NPT fittings located on the bottom for the inlet and outlet water connections
Propane Gas
Natural Gas
RTG Series High Efficiency Non-Condensing Indoor Tankless Gas Water Heater With Built-In Wi-Fi
9.5-9.5 GPM
  • 0.82 UEF
  • Built-in EcoNet® Wi-Fi technology
  • LeakGuard® Leak Detection and Prevention System
  • Industry Leading! 43' vent run capability
Natural Gas
Propane Gas
RTG-R Series (with Recirculation) High Efficiency Non-Condensing Tankless Gas Water Heaters (Outdoors)
• 0.82 UEF
• Built-in EcoNet® Wi-Fi technology
• Rheem® Exclusive! Hot-Start Programming™ minimizes cold water bursts
• LeakGuard® Leak Detection and Prevention System
• Industry Leading! 43' vent run capability
• Industry Best! 1/2" side to side clearance
• Built-in recirculation for no-wait hot water at the tap
Natural Gas
Propane Gas
RTG-R Series High Efficiency Tankless Gas Water Heater with built-in Recirculation (Indoors)
7-9.5 GPM
  • 0.82 UEF
  • Built-in EcoNet® Wi-Fi technology
  • Rheem® Exclusive! Hot-Start Programming™ minimizes cold water bursts
  • LeakGuard® Leak Detection and Prevention System
  • Industry Leading! 43' vent run capability
  • Industry Best! 1/2" side to side clearance
  • Built-in recirculation for no-wait hot water at the tap
Professional Classic Series: Tankless Electric RTEX-06T

  • Efficient Design – UEF up to .95 and advanced self-modulating technology only consumes the power needed to satisfy hot water demand
  • Flow Rate up to 0.25 GPM
  • Digital thermostatic temperature controls in 1-degree increments ranging from 80°F - 140°F (26°C - 60°C)
  • Includes two optional 0.35 GPM aerators (flow restrictors) for optimal temperature output and performance
  • Stainless steel heat exchanger reduces corrosion for long life. 
  • Brass 1/2" NPT fittings located on the bottom for the inlet and outlet water connections.
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