GT-510-NI - Non-Condensing Indoor Natural Gas Tankless Water Heater

GT-510-NI - Non-Condensing Indoor Natural Gas Tankless Water Heater Where to Buy

Fully modulating, gas fired, tankless water heater specifically designed for residential and commercial applications. Supplies hot water to domestic hot water systems (directly or indirectly) which can be used with storage tanks, recirculation systems, hydronic heating systems, radiant floor heating systems, and/or combined domestic and heating applications.


  • 15-year limited Heat Exchanger Warranty, 5-year parts warranty, 1-year labor warranty for Residential applications
  • .82 Energy Factor
  • Continuous Maximum Flow Rates up to 10.0 GPM
  • Commercial Grade Copper Heat Exchanger
  • Low NOx emissions
  • Easy-Link up to four units without a Multi-Unit Controller
  • 11,000 Natural Gas BTU Input Minimum
  • 199,000 Natural Gas BTU Input Maximum
  • Non-Condensing Direct Vent Indoor model
  • Supplied with a power cord and remote control

Tech Specs

  • Technology: Non-Condensing
  • Fuel Source: Natural Gas
  • Remote Control: Yes
  • Limited Heat Exchanger Warranty: 15
  • Limited Parts Warranty: 5
  • Max BTUs Input: 199,000
  • Emissions: Low NOx
  • Water Connection Location: Bottom
  • Water Connection Size: 3/4


  • Height: 20 1/2"
  • Width: 13 13/16"
  • Depth: 8 1/2"
  • Weight: 45 lbs.
  • Vent Size: "