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Rinnai RL75eN Outdoor Natural Gas Tankless Water Heater

  • Sale
  • $1,129.06
  • Regular price $1,503.00
  • We have 19 in stock.
  • 19 available

Natural Gas, External Whole House Tankless Water Heater with 7.5 GPM at 40 Degrees Rise for Three Bathroom Home

The RL75e delivers up to 7.5 gallons of hot water per minute (GPM), making it ideal for two to three-bathroom homes. Easy to install on any exterior wall, the R75LSe frees up interior space and saves on installation and construction costs.

Qualifies For Federal Tax Credit

A tankless water heater is an energy-efficient water heating system that heats water only when it's needed. These space-saving, long-lasting water heaters provide an endless stream of clean, hot water for all your appliances simultaneously without temperature fluctuations. And all while saving you up to 40% in energy costs!


  • ENERGY STAR Qualified
  • Certified for Installation in Manufactured (Mobile) Homes
  • Commercial-grade Heat Exchanger for Residential and Commercial Applications
  • Hot Water Capacity: 0.4 to 7.5 GPM @ 40 Rise
  • 82% Thermal Efficiency
  • Natural Gas Fuel
  • Outdoor Installation Only
  • Pre-set at 120 Degrees F
  • 98 degrees F to 140 degrees F Temperature Range
  • Gas Rate Input BTU's: 9,900 - 180,000
  • Electronic Ignition
  • EZConnect (Connects Two Units Together)
  • Meets California and Texas NOx Emissions Standards
  • Compatible with Full Line of Rinnai Digital Controllers
  • GSA Approved
  • 12-Year Warranty on Heat Exchanger, 5 Year Parts, 1 Year Labor for Residential Installations
  • Includes:
    • MC-91-1 Digital Controller with Error Code Indicator
    • Isolation Valve
    • Pressure Relief Valve
    • Wall Mounting Hardware


  • Factory Set Temperature: 120
  • Gas Connection: 3/4inch
  • Water Connection: 3/4inch

For Rinnai Certified Installation:

Contact Rinnai at 844-348-4715

    Item Number RL75eN
    Rinnai Product Category Tankless Water Heater
    Product Height 24.3 in.
    Product Width 14.04 in.
    Product Depth 9.6 in.
    Product Weight 43.6 lb.
    UPC Code 766156006357
    Warranty-Residential Standard (HEX/ Parts/ Labor) 12 yr/ 5 yr/ 1 yr
    Warranty-Commercial Standard (HEX/ Parts/ Labor) 5 yr/ 5 yr/ 1 yr

    Info and Guides

    Energy Guide

    Installation Guide



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