Rinnai Hybrid Tank-Tankless 40 Gallon Gas 90,000 BTU Interior Water Heater

The Rinnai Hybrid Tank-Tankless 40 Gallon 90,000 BTU Gas Interior Water Heater is a unique combination blending the benefits of advanced technology and simple supply; it pairs an innovative, on-demand tankless system with an ample 40-gallon storage tank. By design, the system has a large capacity of hot water as well as technology to help maintain and quickly replenish the hot water supply.

  • Uses 4″ B-Vent for exhaust and standard water connections
  • Meets all Flammable Vapor Ignition Resistant requirements for ANSI Z21.10.1-CSA 4.1 Standards
  • First Hour Rating of 180 gallons
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SKU: R-199-NG-RUC98IN Categories: ,

Water Heater Description

The Rinnai Hybrid Tank-Tankless 40 Gallon 90,000 BTU Gas Interior Water Heater replenishes its hot water supply much more quickly than a traditional tank water heater, it puts time on your side. Imagine your entire family taking back-to-back showers and never running out of hot water! If utilizing simultaneous hot water fixtures results in your hot water supply depleting, a Rinnai RH180 Hybrid Tank-Tankless Water Heater will replenish your hot water supply more than twice as fast as a 40-gallon traditional tank water heater.

Manufacturer SKU: RH180 / REU-VA1320WF-US

Manufacturer PDF: R-PRWH-E-29_HTT_Brochure_lr.pdf

Water Heater Specifications




Natural Gas


Hybrid (tank & tankless)

Tank Capacity (gallons)


BTU Input (british thermal units)


Ignition Type

Direct Spark Ignition

Energy Star


Water Heater Warranty

Waterheaters.com will honor all warranties in accordance with manufacturer policies and procedures. Manufacturer warranty issues should be addresses directly with the manufacturer.

Residential Use: 10 yrs heat exchanger, 5 yrs tank, 3 yrs parts
Commercial Use: 5 yrs heat exchanger, 1 yrs tank, 3 yrs parts