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Please note: These units come as Natural Gas as standard. An LP conversion kit (107875-01) that is not included is required.

With an AFUE up to 94.5%, the K2 condensing boiler does an outstanding job of establishing a balance between high efficiency and high value. This is achieved by mating the proven and reliable performance of a high efficiency heat exchanger with the Sage2.2 control system. The impressive list of high-value standard features that come with the K2 boiler adds to the overall savings that it can provide. The K2 is also wall-mounted, offering a space-saving, low depth profile that is tremendously flexible in tight installation spaces.

  • High efficiency, condensing boiler - Up to 94.5% AFUE
  • 80 - 180 MBH (5 sizes) and Combi Kit Available
  • ENERGY STAR Certified - Efficiency tax credits/rebates may apply
  • Reliable stainless steel heat exchanger that has been proven in millions of households
  • Sage 2.2 Control System with factory pre-sets to speed installation
  • Touch screen diagnostic display
  • FREE 5-year parts warranty included
  • UNMATCHED High Altitude Performance
  • High capacity pre-installed boiler loop circulator
  • Split-voltage junction box
  • Universal exhaust termination for polypropylene and PVC
  • Outdoor reset and sensor

*K2WT-180M shall be installed at altitudes ranging from 2001-10100ft.
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Manuals (2)
IBR Rating:
BTU Output:
DOE Rating:
BTU Input:
Vent Size:
Height (Inches):
Fuel Type:
Natural Gas
Boiler Type:
High Efficiency
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