Takagi Concentric Vent Indoor Non-Condensing Tankless Water Heater

Get endless hot water with Takagi’s highly efficient gas tankless residential water heater. Also, great for use with radiant floor heating systems!


SKU: TK510C Categories: , GTIN: 00671657141929


The TK-510C-NI is a fully modulating, gas fired, tankless water heater with sealed combustion and power vented flue. Supplies hot water to domestic hot water systems (directly or indirectly) and can be used with water storage tanks, recirculation systems, and/or combined domestic & heating applications. The TK-510C-NI can be used for Residential and Commercial applications


  • 15-year limited heat exchanger, 5 yrs limited parts Residential use
  • 5-year limited heat exchanger, 5 yrs limited parts Commercial use
  • Convertible from Natural Gas to Liquid Propane
  • Complies with Ultra-Low NOx regulations of less than 14 ng/J (<20ppm)
  • Commercial Grade Copper Heat Exchanger
  • Includes a power cord as standard features
  • Concentric Vent design
  • NSF certified for commercial applications
  • Easy-Link up to four units without a Multi-Unit Controller
  • Multi-Link up to 20 units with a Multi-Unit Controller
  • Safety features include freeze, overheat, surge protection, and troubleshooting diagnostic codes

Additional information

Weight 51 lbs
Dimensions 13.75 × 10.5 × 20.5 in



Installation & Owners Guide
Spec Sheet