Heating perfection and long-term protection

Every Ultra 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

From North America's leading boiler manufacturer with over 135 years of proud history

Designed to operate in low temperature condensing applications

Outdoor reset and domestic hot water priority

Modulates with 5:1 turn-down ratio

High grade stainless steel burner features quiet operation

U-Control gives you the power for easy set-up and maintenance

Back-lit LCD display and simple programming buttons make entering and receiving information easy

Energy Star® Rated

Heating perfection and long-term protection

Every Ultra 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

From North America's leading boiler manufacturer with over 135 years of proud history

Designed to operate in low temperature condensing applications

Outdoor reset and domestic hot water priority

Modulates with 5:1 turn-down ratio

High grade stainless steel burner features quiet operation

U-Control gives you the power for easy set-up and maintenance

Back-lit LCD display and simple programming buttons make entering and receiving information easy

Energy Star® Rated

Heating perfection and long-term protection

Every Ultra 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

From North America's leading boiler manufacturer with over 135 years of proud history

Designed to operate in low temperature condensing applications

Outdoor reset and domestic hot water priority

Modulates with 5:1 turn-down ratio

High grade stainless steel burner features quiet operation

U-Control gives you the power for easy set-up and maintenance

Back-lit LCD display and simple programming buttons make entering and receiving information easy

Energy Star® Rated

Heating perfection and long-term protection

Every Ultra 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

From North America's leading boiler manufacturer with over 135 years of proud history

Designed to operate in low temperature condensing applications

Outdoor reset and domestic hot water priority

Modulates with 5:1 turn-down ratio

High grade stainless steel burner features quiet operation

U-Control gives you the power for easy set-up and maintenance

Back-lit LCD display and simple programming buttons make entering and receiving information easy

Energy Star® Rated

Heating perfection and long-term protection

Every Ultra 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

From North America's leading boiler manufacturer with over 135 years of proud history

Designed to operate in low temperature condensing applications

Outdoor reset and domestic hot water priority

Modulates with 5:1 turn-down ratio

High grade stainless steel burner features quiet operation

U-Control gives you the power for easy set-up and maintenance

Back-lit LCD display and simple programming buttons make entering and receiving information easy

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

Heating perfection and long-term protection

Every Ultra 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

From North America's leading boiler manufacturer with over 135 years of proud history

Designed to operate in low temperature condensing applications

Outdoor reset and domestic hot water priority

Modulates with 5:1 turn-down ratio

High grade stainless steel burner features quiet operation

U-Control gives you the power for easy set-up and maintenance

Back-lit LCD display and simple programming buttons make entering and receiving information easy

Energy Star® Rated

Efficiency and technology that exceeds the standard

Plenty of capacity

Easy to install

Very affordable

The unity of space and power

Backed by a legacy of reliability

Aqua Balance quality

Whole Home Domestic Water Heating Capability

Internal condensate trap

24 Volt AC thermostat relay, fuse protected with prewired terminal strip

Heavy gauge insulated jacket-provides quiet operation

Contractor friendly removable sides

Quality brass nuts on heat exchanger for both DHW and space heating

Sensors used in place of additional boiler controls

Energy Star® Rated

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