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The perfect mix of performance, quality, and value, the Vitodens 100-W gas-fired wall-mount condensing boiler is ideal for any home and any budget. Equipped with modulating stainless steel cylinder burner and Inox-Radial heat exchanger surface, the new generation of this popular boiler now offers even greater versatility and choice. The Vitodens 100-W wall-mounted condensing boiler is the perfect combination of value, quality and Viessmann technology.

  • Fits Any Home and Budget with high performance at an attractive price.
  • Outstanding Efficiency of 95.2% A.F.U.E. on all models.
  • Lasting Performance with industry-leading Viessmann made SA240 316 Ti stainless steel Inox-Radial heat exchanger constructed to CSA B51 and ASME Section IV.
  • Low-Emission Combustion with Viessmann made stainless steel MatriX cylinder burner for natural gas or propane. Factory calibrated.
  • Versatile On-Board Boiler Control interfaces with most external controls. Now with integrated 0-10V and OpenTherm┬« communication ability. Outdoor temperature sensor standard.
  • Greater Venting Flexibility with increased vent length (up to 200') and multiple venting options:
    • Horizontal or vertical sealed combustion coaxial venting (factory supplied).
    • Horizontal, vertical or hybrid sealed combustion double-pipe venting (field supplied).
    • Horizontal or vertical single-wall venting (field supplied).
  • Suitable for Altitude Levels of up to 10,000 ft. / 3000 m.
  • Easy Installation, Service and Maintenance with all pipe connections located at the bottom and serviceable components easily accessible from the front.
  • Extremely Quiet Operation; quieter than most refrigerators.
  • Compact, Lightweight Design and zero clearance to combustibles.
  • Built-in Automatic Frost Protection prevents freeze-up during long shut-off periods.
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Fuel Type:

Natural Gas




System Type:

Hydronic (Water)


Wall Mounted

EI/Spark Ignition


Direct Vent

BTU Output:


BTU Input:



2 Year Limited on Parts/ Limited Lifetime on Pressure Vessel

Boiler Type:

High Efficiency

Min Pressure (W.C.):

4 W.C. (Nat Gas)

10 W.C. (LP Gas)

Max Pressure (W.C.):

14 W.C. (Nat Gas & LP Gas)

Gas Connection:


Max Pressure (PSI):


Max Temp (F):


Vent Size:

2" 3" 4"

Vent Type:

Viessmann Coaxial PPs Vent Stainless Steel Vent CPVC Vent

Height (Inches):


Width (Inches):


Depth (Inches):


Weight (lbs):

95 lbs




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