Viessmann Vitodens 111-W
Model Number: B1KA
German-engineered combi boiler providing both heating and domestic hot water.
Technical Specifications
Prices depend on sizing, venting and piping in your home, so we quote every installation.
Sizing: the right size comes from a room-by-room heat-loss calculation, not the size of the old boiler or a rule of thumb. Oversized boilers short-cycle and waste fuel; steam systems are sized to the connected radiation instead. See how we approach boiler installation.
Home-Specific Operating Cost Review
No guaranteed annual savings or payback period
Historical Use
Fuel consumption and weather
Current Rates
Utility and delivered-fuel prices
System Design
Load, piping, controls, and temperatures
Full Specifications
- Model Number
- B1KA
- Efficiency (AFUE)
- 97%
- Boiler Type
- Combi Boiler
- BTU Input Range
- 57k - 150k BTU
- In Production
- Yes
- Parts Warranty
- 5 years
- Heat Exchanger Warranty
- 12 years
Specification source not yet linked — figures are being verified against manufacturer data.
Ideal For
Smaller luxury homes needing combined heating and hot water
Expert Review: Viessmann Vitodens 111-W
The Viessmann Vitodens 111-W is the premium combi solution for smaller luxury homes. Combining heating and domestic hot water in one wall-mounted unit, this 97% AFUE combi eliminates the need for a separate water heater. Nassau County townhomes and smaller estates in Great Neck and Manhasset benefit from the space savings.
The integrated 46-gallon stainless steel storage tank provides instant hot water without the limitations of tankless systems. German engineering ensures consistent performance and the quiet operation expected in luxury settings.
Best suited for homes with 1-2 bathrooms and moderate hot water demand. Larger families or homes with multiple simultaneous showers may need the dedicated Vitodens 200-W with a separate indirect tank.
The 12-year heat exchanger warranty and 5-year parts coverage reflect Viessmann's commitment to quality. Annual maintenance is essential—we recommend scheduling with your fall tune-up.
Our recommendation: The Vitodens 111-W is perfect for space-conscious luxury homeowners in smaller homes or townhomes who want German engineering and the convenience of combined heating and hot water. The higher upfront cost is offset by eliminating the separate water heater.
Key Features & Technology
Integrated DHW storage
97% AFUE combi efficiency
46 gallon stainless tank
Space-saving wall mount
German engineering
Advantages
- Heating and hot water in one unit
- No separate water heater needed
- Excellent for 1-2 bathroom homes
- Premium quality build
Considerations
- Higher initial investment
- Limited to smaller homes
- Requires annual maintenance
Sizing & Installation Notes
Combi boilers like the Vitodens 111-W are sized on two loads at once: the home's heat loss and the peak domestic hot water demand. In most Long Island homes the hot-water load is the larger one, so we size to your household's simultaneous shower and tap use.
Every Viessmann installation starts with a free in-home assessment covering the heat-loss calculation, venting and chimney condition, and gas or oil supply sizing. Learn more about our boiler installation process, or see current rebate and incentive programs that may apply.
Warranty & Protection
Parts Warranty
5 years
Heat Exchanger
12 years
Our Guarantee
100% Satisfaction
All Viessmann boiler installations by Home+ Air & Heat include our 1-year workmanship warranty, covering labor and any installation-related issues.
Compare the Viessmann Lineup
| Model | Efficiency | BTU Range | Fuel | Heat Exchanger Warranty |
|---|---|---|---|---|
| Vitodens 111-W (this model) | 97% AFUE | 57k - 150k BTU | — | 12 years |
| Vitodens 200-W | 96% AFUE | 20k - 199k BTU | natural gas/propane | limited lifetime (residential) |
| Vitodens 100-W | 96% AFUE | 20k - 120k BTU | natural gas/propane | limited lifetime (residential) |
| Vitocrossal 300 CA3B | 96.1% AFUE | 2500k - 6000k BTU | natural gas/propane | — |
| Vitocrossal 200 CI2 | 98% AFUE | 399k - 2000k BTU | natural gas/propane | — |
| Vitorond 100 | 86% AFUE | 91k - 245k BTU | oil | residential limited 20-year cast-iron section (commercial 10-year) |
| Vitorond 200 | 87.9% AFUE | 490k - 4387k BTU | oil | — |
| Vitodens 222-F | 95% AFUE | 12k - 125k BTU | natural gas/propane | limited lifetime (residential) |
| Vitocal 100-AW | Not verified | 21k - 58k BTU | electric | — |
| Vitocrossal 200 CM2 | 95% AFUE | 131k - 2245k BTU | natural gas/propane | — |
| Vitocrossal 300 CU3A | 98% AFUE | 19k - 199k BTU | natural gas/propane | — |
See the full Viessmann brand page for lineup context, or browse the Best Combi Boilers 2027 guide to compare across brands.
Frequently Asked Questions
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