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Signature Series Ultra High Efficiency 10.5-GPM 180000-BTU Indoor-Outdoor Natural Gas-Propane Tankless Water Heater with X3® Scale Prevention
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Signature Series Ultra High Efficiency 10.5-GPM 180000-BTU Indoor-Outdoor Natural Gas-Propane Tankless Water Heater with X3® Scale Prevention

Model: GT15THR-180X3 Lowe's Item #: 5744492
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Product Description

  • ENERGY STAR® certified with a Uniform Energy Factor of 0.95
  • Premium condensing gas tankless water heaters deliver on-demand performance
  • Integrated Recirculation Pump & Display
  • X3® Scale Prevention Technology provides protection for the heat exchanger — making it last three times longer than a standard tankless water heater and maintaining like-new performance
  • Single stainless steel, heavy-duty heat exchanger design eliminates most internal welds and improves overall reliability
  • Built-in Control Display to set and review recirc schedules, status, and error codes
  • 180,000 BTU
  • Field convertible to Liquid Propane
  • 10.5 gallons per minute flow rate
  • 15-year limited residential warranty gives you peace of mind

Save up to $116/year on annual operating costs—When compared to a standard 50-gallon atmospheric natural gas tank water heater.

Signature Series Features

These features are included with all Signature Series water heaters.

ENERGY STAR® Certified
Continuous Hot Water
Save Energy, Save Money
Learn More
Shop Now at Lowe’s

Product Features

  • ENERGY STAR® certified with a Uniform Energy Factor of 0.95
  • Premium condensing gas tankless water heaters deliver on-demand performance
  • Integrated Recirculation Pump & Display
  • X3® Scale Prevention Technology provides protection for the heat exchanger — making it last three times longer than a standard tankless water heater and maintaining like-new performance
  • Single stainless steel, heavy-duty heat exchanger design eliminates most internal welds and improves overall reliability
  • Built-in Control Display to set and review recirc schedules, status, and error codes
  • 180,000 BTU
  • Field convertible to Liquid Propane
  • 10.5 gallons per minute flow rate
  • 15-year limited residential warranty gives you peace of mind

Save up to $116/year on annual operating costs—When compared to a standard 50-gallon atmospheric natural gas tank water heater.

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Clock - Luxurious Shower - 5 Cost Yes Bathtub

How This Model Will Perform In Your Home...

These stats are based on a home in  map-pinNolensville, TN   To view or adjust our performance assumptions, view advanced settings

  • 20 minutes
    single shower length
  • 2.6 showers
    back-to-back
  • 2.2 showers
    at the same time
  • 53 gallons
    max tub size
  • $573/YEAR
    estimated energy cost

Many factors affect the actual performance of a water heater. This represents our closest approximation of your likely experience with this water heater using National Averages, but actual performance may vary depending on factors beyond our ability to control or estimate. To view or adjust our assumptions of the most common factors that impact this product’s performance using National Averages, please view the advanced settings. *Annual energy costs are estimated from the energy efficiency of each water heater, your household’s estimated water usage & set temperature, the average groundwater temperature for your location, and residential energy prices as reported by the Department of Energy.

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RESOURCES

  • Product Dimensions

    Type: Water Heater
    Height: 44 19/32"
    Width: 16 1/2"
    Depth: 16.10"
    Shipping Weight: 125 lbs.
    VentType Power Direct Vent
    Vent Diameter: 2

    Configuration and Overview

    Emissions: Ultra-Low NOx
    Maximum BTUs: 180000
    Minimum BTUs: 9000
    UEF: 0.95
    Limited Heat Exchanger Warranty: 15 Years
    Limited Parts Warranty: 5 Years
    Water Connection Location: Bottom
    Water Connection Size: 3/4
    Heat Exchanger: Patented Stainless Steel
    Voltage: 120
    ENERGY STAR®: Yes
    Digital Display: Yes

  • Owners Manual
    Comprehensive information about your new appliance - from getting started to cleaning and maintenance - with answers to frequently asked questions.

    Signature Premier Tankless with X3 Owners Manual

    Owners Manual - Spanish

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