95% AFUE, Combi Gas Boiler, 180 MBH (US Boiler)

Burnaham K2WTC-180B Combi Gas Boiler, 95% AFUE, Single Phase, 169000 BTU, Direct Vent


Manufacturer part number:



U.S. Boiler Company


Looking for a heat and hot water solution in the same package? Look no further than the new K2 Combi. Equipped with the same proven and reliable heat exchanger, same 95% AFUE efficiency, and the same reliable boiler control system as the original K2 boiler. The K2 Combi adds a completely enclosed flat plate heat exchanger to provide hot water for your home. This on-demand domestic hot water capability requires no external tank and offers best-in-class performance for most installations. The Burnham K2 Combi is a high efficiency condensing combi boiler working as a hydronic boiler and tankless water heater, with a 10:1 turn down ratio and a variable speed combustion blower.

  • The K2 Combi combines domestic hot water and space heating, all in an efficient 95% AFUE package. This unit can provide 4.5 gallons per minute at a 70 degree temperature rise.
  • The Sage2.3 system has a simple touchscreen interface built into the boiler. The system provides step-by-step instructions for changing settings and running system diagnostics, making the K2 one of the most user friendly boilers on the market.
  • A compact and versatile design allows the K2 Combi boiler to be wall hung with the pre-installed bracket and wall mount kit, keeping the K2 Combi up and out of the way.
  • The K2 Combi increases efficiency by including an outdoor sensor, allowing the boiler to lower water temperatures when the outdoor temperatures are warmer.
  • Universal Vent connection

Includes: (1) Burnham K2WTC-180B-6T02 Combi Gas Boiler, (1) Wall Mounting Kit, (1) Taco Circulator

Products specifications
Attribute nameAttribute value
AFUE Rating95%
Connection Type1/2 inch
Dimensions30 Inch H x 17 Inch W x 19 Inch D
DOE Heating Capacity169000 BTU
Flue Outlet Size3 Inch Dia
Frequency Rating60 Hz
Fuel TypeNatural Gas
Housing MaterialStainless Steel
Ignition SystemElectric Spark
Input Capacity180000 BTU
ManufacturerU.S. Boiler Company
Mounting TypeWall/Horizontal
Net IBR Rating147000 BTU
Vent TypeDirect
Voltage Rating120 V
Weight126 lbs