Hybrid Tank-Tankless Water Heater

RH180 click to zoom into photo of
  • Quick, easy installation—similar to a typical tank—makes it perfect for same-day replacement
  • ½" gas line connection*
  • Standard water connections
  • Uses 4" B-Vent for exhaust
  • First Hour Rating of 180 gallons
  • More than twice the capacity of a traditional 50-gallon tank
  • Residential and light commercial applications
  • No exhaust flue in tank-minimizes standby heat loss
  • Easy access to key components for repair
  • Meets all Flammable Vapor Ignition Resistant (FVIR) requirements for the ANSI Z21.10.1-CSA 4.1 Standards

RH180 Gallery

Introducing the new RH180 Hybrid Tank-Tankless Water Heater
Introducing the new RH180 Hybrid Tank-Tankless Water Heater

Width: 20 Inches

Height: 51.2 Inches

Depth: 27.5 Inches


168.5 lbs, 68 kg (empty)

Installation Type


Storage Tank

40 Gallons

Temperature Range

110°–140° F (5 set points)

Minimum/Maximum (natural gas)

59,500 / 91,300

Minimum/Maximum (propane)

47,600 / 87,300

Thermal Efficiency


First Hour Rating

180 Gallons


4” UL Listed B-Vent

Residential Warranty**

HEX 10 yrs; tank 6 yrs; parts 3 yrs; labor 1 yr

Ignition System

Direct Electronic Ignition

Maximum Altitude

Up to 5,400 ft



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