- Continuous Hot Water—Delivers continuous hot water at a flow rate of up to 10.0 GPM
- Optimized Heat Transfer—Primary commercial-grade copper heat exchanger is 25x better than stainless steel at heat transfer, stabilizing outgoing water temperatures quickly
- Corrosion Protection—Secondary heat exchanger is made of 316L Stainless Steel to protect against corrosion
- Energy Efficient—Highly-efficient condensing Ultra-Low Nox tankless water heater delivers up to .93 Uniform Energy Factor (UEF)
- Flexible Venting—Flexible power direct vent design allows for venting up to 100 feet using either PVC, CPVC, polypropylene or ABS Pipe (solid core)
- Shared Vent for Multiple Units—Common vent up to 8 units
- Simple Control & Troubleshooting—Integrated temperature controls and advanced diagnostics make it easy to adjust settings and troubleshoot problems
- Safety Features—Added safety features include a flame sensor, temperature monitoring, and an overheat cutoff fuse
- Peace of Mind—Industry-leading 15-year limited warranty on heat exchanger in residential applications
The State ProLine® XE GTS-540-NIH Indoor Tankless High Efficiency Condensing water heater uses up to 199,000 BTU/hr of natural gas to deliver an endless supply of hot water for a 3-bath home in northern climates and a 4-bath home in southern climates (one shower head per bath).
This Ultra-Low NOx model with condensing technology has a Uniform Energy Factor of 0.93 and meets the ASHRAE 90.1-2007 energy efficiency requirements, making it environmentally friendly and reducing operating costs.
The GTS-540-NIH uses commercial grade copper alloy for the heat exchanger tubing and is suitable for heavier residential usages, such as domestic recirculation systems. Remote control is included as a standard feature on all outdoor models. Indoor models are certified up to a 10,100 ft. altitude.
For high-use applications, Easy-Link up to 4 units with the included communication cables. A Multi-Link controller (sold separately) can link up to 20 units.
The GTS-540-NIH tankless condensing water heater provides years of hot water through innovation and quality and is backed by an industry-leading 15-year limited warranty.
