Viessmann Boilers & Combi Boilers


Viessmann has been providing comfortable, efficient and environmentally responsible heating solutions to the world since 1917. With ongoing research and development with a focus on product innovation, Viessmann’s high-tech, state-of-the-art boilers and heating products have made the company a technological innovator and pace-setter for the entire industry.
ductless.ca Inc. is pleased to offer Viessmann’s full range of residential and commercial products and systems.
Why choose ductless.ca Inc. to install your Viessmann boiler?
ductless.ca Inc. is your go-to provider for professional and reliable installations of Viessmann boilers. Our team of certified technicians have years of experience and are dedicated to ensuring that your boiler is installed safely and efficiently. Our expertise in hydronic heating technology ensures that we will properly size your Viessmann boiler for your specific needs, maximizing your heating efficiency and reducing your energy costs. Our commitment to quality, safety, and customer satisfaction means that you can trust us to provide the best service possible. We offer a no obligation in-home estimates and a comprehensive 10-year factory heat exchanger, 5-year factory parts and 2-year labour warranties. Choosing ductless.ca Inc. for your boiler in the Toronto, GTA and Georgian Bay area is the smart choice.
Viessmann Boilers We Proudly Offer
Viessmann Vitodens 100-W, B1HE & B1KE
Boilers & Combi Boilers
The Viessmann Vitodens 100-W, B1HE (space heating) and B1KE (combi-boilers) are gas-fired wall-mounted condensing boilers equipped with a Viessmann stainless steel radial heat exchanger for lasting performance and reliability. This new generation of the popular Vitodens 100-W boilers now offers even greater versatility and choice and is the perfect combination of value and quality. Rated inputs from 35,200 to 199,000 Btu/h (24.9 to 58.3 kW).
Features at a glance:
- Viessmann Inox-Radial Heat Exchanger,
- Outstanding efficiency of 95% AFUE on all models,
- On demand domestic hot water with the B1KE versions,
- Lasting performance with Viessmann-made stainless steel and titanium alloy Inox-Radial heat exchanges,
- Low-emission combustion with Viessmann’s own fully modulating stainless steel MatriX cylinder burner for natural gas or propane. Factory calibration eliminates the need for adjustments in the field.
- Integrated backlit LCD touchscreen interfaces with any level of third-party control, from a room thermostat to outdoor reset and more.
- Greater venting flexibility with increased vent length up to 200 ft (61 m) and multiple venting options,
- Horizontal or vertical sealed combustion coaxial vent system (factory supplied),
- Horizontal, vertical or hybrid sealed combustion double-pipe vent system (field supplied),
- Horizontal or vertical single-wall vent system (field supplied),
- Flexible pipe venting system,
- Easy installation, service and maintenance with all pipe connections located at the bottom and serviceable components easily accessible from the front,
- A compact, lightweight design with approved zero clearance to combustibles make it a great choice for limited space installations,
- Extremely quiet operation. Quieter than most refrigerators,
- Built-in automatic frost protection shuts off the boiler for an extended period of time while protecting it against freeze-up,
- Warranty:
Heat Exchanger: Lifetime Limited
Parts: 2 Years
Labour: 2 Years
External Viessman Link: Viessmann Vitodens 100-W
Model | B1HE – 85 | B1HE – 120 | B1HE – 150 | B1HE – 199 | B1KE – 120 Combi | B1KE – 199 Combi |
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AFUE | 95% | |||||
Rated CSA Input (Max) (MBH) | 85 | 120 | 150 | 199 | 120 | 199 |
Max Flow Rate | 1,090 l/h (4.8 GPM) |
1,408 l/h (6.2 GPM) |
1,999 l/h (8.8 GPM) |
2,408 l/h (10.6 GPM) |
1,408 l/h (6.2 GPM) |
2,408 l/h (10.6 GPM) |
ENERGY STAR® Certified | ![]() |
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Fuel | Natural Gas, LPG |
Viessmann Vitodens 200-W, B2HE Boilers
The new Viessmann Vitodens 200-W, B2HE wall-mounted condensing boilers are equipped with the industry’s first intelligent combustion management system and intuitive control technology. Rated input: 8,500 to 199,000 Btu/h (2.5 to 58.3 kW).
Features at a glance:
- High efficiency condensing operation: AFUE up to 95%,
- Best value in its class with new industry-leading technology, zero clearance to combustibles and the most standard features,
- The new Vitodens 200-W adapts its combustion to changing gas qualities and operating conditions automatically, with the intelligent Lambda Pro combustion management system,
- Reliable domestic hot water (DHW) production,
- Maximum reliability with a stainless steel and titanium alloy Inox-Radial heat exchanger with defined gaps between coils produces efficient heat transfer and a long service life,
- Powerful and user-friendly 7″ color touchscreen control with multi-function outdoor reset boiler and system control,
- Built-in Wi-Fi control via Viessmann app.
- Equipped with an outdoor temperature sensor, the boiler automatically adapts the operating temperature to the changing outdoor temperature. This reduces fuel consumption up to 15%,
- Modulating MatriX compact gas burner offers extremely low emission levels of NOx and CO which meet or exceed all international clean air regulations and guidelines.
- Warranty:
Heat Exchanger: Lifetime Limited
Parts: 2 Years
Labour: 2 Years
External Viessman Link: Viessmann Vitodens 200-W


Model | B2HE-85 | B2HE-120 | B2HE-150 | B2HE-199 | |
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AFUE | 95% | ||||
Rated CSA Input (Max) (MBH) | 85 | 120 | 150 | 199 | |
Max Flow Rate | 1,204 l/h (5.3 GPM) | 1,408 l/h (6.2 GPM) | 2,112 l/h (9.3 GPM) | 2,408 l/h (10.6 GPM) | |
ENERGY STAR® Certified | ![]() |
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Fuel | Natural Gas, LPG |
Viessmann Vitodens 222-F, B2TB Boilers
The new Viessmann Vitodens 222-F, B2TB comes in a space saving floor-standing design and with an advanced stainless steel storage tank built-in for DHW service. Equipped with an Inox-Radial heat exchanger, MatriX cylindrical burner and a advanced Vitoronic 200 graphical user interface the Vitodens 222-F is one of the most advanced high-efficiency combi-boilers on the Canadian market! Rated input: 19,000 to 125,000 Btu/h (19.6 to 36.6 kW).
Features at a glance:
- High efficiency condensing operation: AFUE of 95%,
- Floor standing space saving design, ideal for light to medium hot water and domestic hot water loads for single family homes,
- Built-in 98 L stainless steel domestic hot water tank which combines the benefits of both tankless technology and traditional hot-water tank performance,
- Comes with the award winning Vitotronic 200 graphical user interface,
- Outdoor temperature sensors automatically adjust the boiler for optimum energy savings based on hot water demand,
- Maximum reliability with a stainless steel and titanium alloy Inox-Radial heat exchanger with defined gaps between coils produces efficient heat transfer and a long service life,
- Fully modulating for extreme energy efficiency,
- Compact, lightweight design with approved zero clearance to combustibles installation. Limited space is not an issue,
- Reduced maintenance with the Lambda Pro intelligent combustion management system. The Lambda Pro automatically adjusts to the gas type and quality, thus no fuel conversion kits are necessary. Works with natural gas, propane and even biogas,
- Balanced flue design with self-regulating gas burner and self-calibrating combustion for easy start-up and ongoing reliable operation,
- Modulating MatriX gas burner offers extremely low emission levels of NOx and CO which meet or exceed all international clean air regulations and guidelines.
- Warranty:
Heat Exchanger: Lifetime Limited
Parts: 2 Years
Labour: 2 Years
External Viessman Link: Viessmann Vitodens 222-F



Model | B2TB – 125 |
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AFUE | 95% |
Rated CSA Input (Min to Max) (MBH) | 19 to 125 |
Max DHW Output (At 70°F Rise) | 750l/h (3.3 GPM) |
ENERGY STAR® Certified | ![]() |
Fuel | Natural Gas, LPG |
Viessmann Vitocrossal 300, CU3A Boilers
The Vitodens Vitocrossal 300, CU3A floor standing condensing boiler offers high temperature capability, high water volume, stainless steel burner construction and full modulation. The Vitocrossal 300 is perfect for homes with high mass cast iron radiators or homes with multi-zone high temperature fin tube radiators, or new installations with high DHW requirements. Rated input: 19,000 to 199,000 Btu/h (5.6 to 58.3 kW).
Features at a glance:
- Compact, floor-standing,
- High efficiency of 95% AFUE on all models,
- High temperature operation, up to 90°C (194°F).
- Vitocrossal Pocket Design with wide water passages. No dedicated boiler pump required and eliminates primary/secondary piping,
- MatriX dome gas burner with 5:1 turndown ratio to ensure high efficiency and extremely clean combustion,
- High internal water volume extends burner run time and reduces short cycling,
- A self-calibrating Lambda Pro combustion management system ensures optimal combustion efficiency at all times regardless of gas/air quality. Simple commissioning with no field adjustments and adjusts to all fuel types (NG and LPG),
- Durable, reliable, and long service life with a high mass Inox-Crossal stainless steel heat exchanger,
- Multiple venting options and configurations with vent lengths up to 198 ft,
- Multi-boiler installation with 8 boilers up to 1592 MBH
- Warranty:
Heat Exchanger: Lifetime Limited
Parts: 2 Years
Labour: 2 Years
External Viessman Link: Viessmann Vitocrossal 300
Model | CU3A-94 | CU3A-125 | CU3A-160 | CU3A-199 |
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AFUE | 95% | |||
Rated CSA Input (Min to Max) (MBH) | 19 to 94 | 25 to 125 | 43 to 160 | 43 to 199 |
Net AHRI Rating | 76 | 101 | 129 | 161 |
ENERGY STAR® Certified | ![]() |
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Fuel | Natural Gas, LPG |