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The TK-540P-PEH heater integrates a recirculation pump to provide instant hot water in residential applications with dedicated recirculation lines. The pump is easily controlled with a simple user interface and multiple pump settings allow you to customize pump operation to meet your needs while maximizing heater efficiency.

  • ENERGY STAR® qualified
  • 15-year limited Heat Exchanger Warranty, 5-year parts warranty, 1-year labor warranty for Residential applications
  • 6-year limited Heat Exchanger Warranty, 5-year parts warranty, 1-year labor warranty for Commercial applications
  • Integrated Recirculation Pump - 1/2" pipe - 100'; 3/4" pipe - 500'
  • Primary heat exchanger is constructed of a commercial grade copper that is more resilient to erosion.
  • Secondary heat exchanger is made of type 316L stainless steel to protect against corrosion.
  • Complies with Ultra-Low NOx regulations of less than 14 ng/J (<20ppm)
  • Easy-Link with up to three other T-H3 units to increase flow capacity
  • Condensing Outdoor model
  • Safety features include Air-Fuel ratio (AFR) sensor, freeze protection, overheat cut-off fuse, exhaust & water temperature safety control, and troubleshooting diagnostic codes
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3-5 Showers
Product Type:
Tankless Heater
Vent Type:
Direct Vent
Power Vent
Fuel Type:
Installation Type:
Outdoor Only
Vent Size:
BTU (Max):
BTU (Min):
Water Connection:
Max Flow (GPM):
Ultra Low NOx
Energy Star Rated:
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