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

Built-In Draft Diverter

ASME Copper Finned Tube Heat Exchanger

Gasketless Heat Exchanger Design

All Bronze Circulating Pump

Pump Delay/Freeze Protection

Remote Tank Thermostat

Glass-Lined Water Surfaces

Loch-Heat Ceramic Tile Combustion Chamber

ASME Temperature and Pressure Relief Valve

Manual Reset High Limit

Automatic Reset High Limit

CSA Design Certified for Alcove Installation

CSA Design Certified for Installation on Combustible Floors

3 Year Limited Warranty on Heat Exchanger

Electronic Temperature Control

Fan Assisted Combustion

Sealed Combustion Chamber

Stainless Steel Burners

Low NOx Operation

ASME Copper Finned Tube Heat Exchanger

Gasketless Heat Exchanger Design

All Bronze Circulating Pump

Pump Delay with Freeze Protection

Remote Tank Thermostat

Glass-Lined Water Surfaces

Referenced Gas Valves

Loch-Heat Ceramic Tile Combustion Chamber

Adjustable High Limit with Manual Reset

Flow Switch

Combustion Air Filter

5 Year Limited Warranty on Heat Exchanger