Rinnai RL75eN External Whole House Natural Gas Tankless Water Heater 7.5 Gallons Per Minute with Isolation Valves



Item ships in 1-2 days!

Natural Gas, External Whole House Tankless Water Heater with 7.5 GPM at 40 F 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' 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 F Rise
  • 82% Thermal Efficiency
  • Natural Gas Fuel
  • Outdoor Installation Only
  • Pre-set at 120F
  • 98 F to 140F 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: 3/4"
  • Water Connection: 3/4"

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