Carla Warner

call us (877) 431-2100

a Minnesota family-owned home and kitchen appliance store since 1954.

Eternal GU-100


product specifications

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  • Specifications
    Unit capacity  US Gallons
    Flow-rate capacity 16,000 BTU/Hr / 100,000BTU/Hr 
    Controls Digital 
    Fuel type Gas 
    Water pressure range  
    Overheat protection NA 
    Noise level 40 dBA
    Energy Factor 0.94 
    Installation Wall-Mounted 
    Certifications Energy Star,Design 
    Condensate Collector Integrated 
    Venting type External 
    Connection size Gas: 1/2"; Electricity: Dedicated 120VAC, 60Hz w/3 Pronged Power Cord; Water: 3/4" Female NPT. 
    Color Stainless Steel 
  • Information
    Additional information Stainless Steel Heat Exchanger w/built in; 2 gallon reserve tank; Full flow design and dual activation (thermostat and flow) are compatible with water sense fixtures; Flexible NG / LP / Indoor / Outdoor / Direct Vent / Power Vent conversions in one unit; 3" PVC venting up to 100ft; Clip-on components easily serviced by technicians; Patented self-cleaning utilizes turbulent flow to flush sediments out; Digital display screen for adjusting temperature and easy diagnostics. 
  • Accessories
    Supplied accessories Outdoor Vent Cap Assembly, 3" Horizontal Terminator, Concentric Venting Kit, Remote Contoller Kit, Condensate Neutralizer Kit, Water Heater Stand 
    Optional Accessories  
  • Approximate Dimensions*
    Width 16 7/8"
    Height 29 1/16"
    Depth 13 3/4"
    Weight 77.05 lbs
    Shipping weight NA lbs
    *refer to physical product for exact dimensions
  • Warranty
    Warranty 5 years 
    Additional warranty information 15 year residential / 5 year commercial no leak warranty.  
Product no longer available for purchase.
Have questions? Call us (877) 431-2100


Eternal GU100 is the affordable and flexible to traditional tank water heaters in retrofit applications. This efficient unit provides endless hot water and runs on a 1/2" gas line for easy installation. Whether it’s commercial or residential domestic hot water, the Eternal is the right solution. Its triple pass design provides endless hot water with up to 98% efficiency, and a 15 year residential / 5 year commercial no leak warranty.


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