Energy Star

Condensing Ultra-Low NOx Outdoor 199,000 BTU Natural Gas Tankless Water Heater

Model TS-540-GEH 100
Installation Type
Fuel Source
Maximum BTU's

  • ENERGY STAR® certified with a UEF of 0.95
  • 15-year limited heat exchanger warranty; 5-year parts warranty; 1-year labor warranty for residential applications
  • Easy-Link up to 4 Units and Multi-Link up to 20 Units

    • Condensing Ultra-Low NOx Outdoor 199,000 BTU Natural Gas Tankless Water Heater
    Model TS-540-GEH 100
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    What to Expect from this Model
    modal-clock
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    Number of minutes you can enjoy a shower before running out of hot water. Assumes a 2.1 GPM flow rate
    Unlimited
    single shower length
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    Number of back-to-back showers you can take without running out of hot water. Assumes a 2.1 GPM flow rate and an 8 minute shower length
    Unlimited
    back-to-back
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    Number of showers you can take at the same time without running out of hot water. Assumes a 2.1 GPM flow rate and an 8 minute shower length
    2.7 showers
    at the same time
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    Biggest tub this water heater will fill without running out of hot water. Assumes a 5.0 GPM flow rate, and a 67% fill level
    Unlimited
    max tub size
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    The estimated annual cost to operate this water heater in your location
    $199/year
    est. energy cost
    Based on location results for Columbus, OH 43215
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    Product Details
    • ENERGY STAR® certified with a UEF of 0.95
    • 15-year limited heat exchanger warranty; 5-year parts warranty; 1-year labor warranty for residential applications
    • Easy-Link up to 4 Units and Multi-Link up to 20 Units
    • Ultra-Low NOx emissions
    • Primary heat exchanger is constructed of commercial-grade copper
    • Secondary stainless steel heat exchanger
    • Condensing technology provides significant energy cost savings
    • Supplied with a remote control
    • Includes internal freeze protection and multiple safety features

      • The TS-540 series provides endless and efficient hot water.*

      An easy-to-use electronic display shows:

      —On/Off button
      —Temperature Setting buttons
      —Info and Operation Status
      —Quick-Read Water Temperature

      *Reliance® gas tankless water heaters provide continuous hot water when sized appropriately for your home’s needs.

    Specifications
    Tech Specs
    UEF
    0.95
    Maximum BTUs
    199,000
    Power Source
    GAS
    Limited Parts Warranty
    5 Years
    Water Connection Location
    BOTTOM
    Emissions
    Ultra-Low NOx
    ASME Certified
    No
    Destination Country
    US
    Digital Display
    Yes
    ENERGY STAR® Certified
    Yes
    Fuel Source
    NATURAL
    Installation Type
    OUTDOOR
    Limited Heat Exchanger Warranty 
    15 Years
    Max Flow Rate
    5.8 GPM
    Minimum BTUs
    15,000
    Application
    RESIDENTIAL
    Shipping Height 
    33.25
    Shipping Length 
    21.75
    Shipping Width 
    15.625
    Side Loop
    No
    Dimension & Venting
    Type
    Water Heater
    Height
    23.63"
    Width
    17.75"
    Shipping Weight
    69 lbs
    Vent Type
    Power Direct Vent