91% AFUE efficient

Durable cast iron primary heat exchanger

Condensing stainless steel secondary heat exchanger

Unique 7 pass heat exchanger design maximizes heat transfer

Vents with PVC

Multiple ventilation options (direct vent, direct exhaust, concentric)

Easy conversion to propane

Maximum Heat Exchanger performance

Reliable Boiler Design

Proven Control Strategy

Smart Circulator Strategy

Full product line to satisfy every application

Every residential gas boiler is hydrostatically tested to ASME standards and test fired

Backed by Weil-McLain quality and a warranty that provides peace of mind

Unrivaled technical and field sales support

Over a 130 year proud history and North Americas leading boiler manufacturer

Exceeds Energy Star requirements with 91% efficiency

Boiler sections made from recycled metals

Lower emission levels than most boilers

Energy Star® Rated

Fire tube stainless steel heat exchanger

Integrated precision control

Advanced multi-zone capacity

Set-up wizard for easy install

Floor standing and wall-hung capable

Setup wizard efficiently guides the installer through a single or multiple boiler installation in minutes

For the contractor, installer and/or service provider, the Evergreen has an easy to understand graphical user Interface and makes programming and monitoring operations simple

Wiring diagrams provided are clear and easily accessible

Interactive diagnostic capability

Reliable operation

Easy to understand and monitor controls

Effortless heating and comfort in all zones

Large, accessible panels for quick and easy maintenance checks

Interactive diagnostic capability provides a snapshot of the past and current operation parameters

Reliable operation of the complete heating system including radiant elements

Ease of Installation, Ease of Use and Maintenance

Energy Star® Rated

Fire tube stainless steel heat exchanger

Integrated precision control

Advanced multi-zone capacity

Set-up wizard for easy install

Floor standing and wall-hung capable

Setup wizard efficiently guides the installer through a single or multiple boiler installation in minutes

For the contractor, installer and/or service provider, the Evergreen has an easy to understand graphical user Interface and makes programming and monitoring operations simple

Wiring diagrams provided are clear and easily accessible

Interactive diagnostic capability

Reliable operation

Easy to understand and monitor controls

Effortless heating and comfort in all zones

Large, accessible panels for quick and easy maintenance checks

Interactive diagnostic capability provides a snapshot of the past and current operation parameters

Reliable operation of the complete heating system including radiant elements

Ease of Installation, Ease of Use and Maintenance

Energy Star® Rated

Fire tube stainless steel heat exchanger

Integrated precision control

Advanced multi-zone capacity

Set-up wizard for easy install

Floor standing and wall-hung capable

Setup wizard efficiently guides the installer through a single or multiple boiler installation in minutes

For the contractor, installer and/or service provider, the Evergreen has an easy to understand graphical user Interface and makes programming and monitoring operations simple

Wiring diagrams provided are clear and easily accessible

Interactive diagnostic capability

Reliable operation

Easy to understand and monitor controls

Effortless heating and comfort in all zones

Large, accessible panels for quick and easy maintenance checks

Interactive diagnostic capability provides a snapshot of the past and current operation parameters

Reliable operation of the complete heating system including radiant elements

Ease of Installation, Ease of Use and Maintenance

Energy Star® Rated

Compact, floor-standing gas condensing boiler from 19-199 MBH

High efficiency of 95% AFUE on all models

Vitocrossal Pocket Design with wide water passage ways allow for system/full flow applications

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 water volume extends burner run time and reduces 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

Durable, reliable and long service life with Inox-Crossal stainless steel heat exchanger and high mass design

Multiple venting options and configurations with vent lengths up to 198 foot

Multi-boiler installation with 8 boilers up to 1592 MBH

Compact, floor-standing gas condensing boiler from 19-199 MBH

High efficiency of 95% AFUE on all models

High temperature operation of up to 90 Deg C (194 Deg F)

Vitocrossal Pocket Design with wide water passage ways allow for system/full flow applications

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 water volume extends burner run time and reduces 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 Inox-Crossal stainless steel heat exchanger and high mass design

Multiple venting options and configurations with vent lengths up to 198 foot

Multi-boiler installation with 8 boilers up to 1592 MBH

Energy Star® Rated

Limited Lifetime Warranty

Multi-boiler installation up to 4240 MBH with up to 8 boilers (models B2HA 100, 112 and 150)

Vitodens 200 B2HA-88: the 88 kW is the smallest commercial boiler in the Viessmann portfolio

Best value in its class with new industry-leading technology and the most standard features

Lasting performance with industry-leading Viessmann made titanium infused stainless steel Inox-Radial heat exchanger constructed to CSA B51 and ASME Section IV

Low-emission combustion for environmentally-friendly operation

Intelligent Lambda Pro gas management system automatically adjusts to different gas qualities for optimum efficiency and performance

Modulation ratio up to 6.5:1 ensures extremely high efficiency

Multiple venting options and greater venting flexibility with vent length up to 180 foot

Compact, lightweight design and zero clearance to combustibles

Extremely quiet operation

quieter than most refrigerators

Limited Lifetime Warranty

Multi-boiler installation up to 4240 MBH with up to 8 boilers (models B2HA 100, 112 and 150)

Vitodens 200 B2HA-88: the 88 kW is the smallest commercial boiler in the Viessmann portfolio

Best value in its class with new industry-leading technology and the most standard features

Lasting performance with industry-leading Viessmann made titanium infused stainless steel Inox-Radial heat exchanger constructed to CSA B51 and ASME Section IV

Low-emission combustion for environmentally-friendly operation

Intelligent Lambda Pro gas management system automatically adjusts to different gas qualities for optimum efficiency and performance

Modulation ratio up to 6.5:1 ensures extremely high efficiency

Multiple venting options and greater venting flexibility with vent length up to 180 foot

Compact, lightweight design and zero clearance to combustibles

Extremely quiet operation

quieter than most refrigerators

Energy Star® Rated

Limited Lifetime Warranty

Lasting performance with industry-leading Viessmann made SA240/S43932 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, Factory calibrated

Fast Installation and Reduced Maintenance with Lambda Pro, industry-first intelligent combustion management system-Adjusts automatically to gas type and quality

No fuel conversion kit required

Powerful and User-friendly Viessmann Vitotronic on-board multi-function outdoor reset boiler and system control for multi-temperature space and DHW heating

Compact, Esthetic Product Design and zero clearance to combustible

Energy Star® Rated