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

Pool and Spa Temperature Control

Password Security

CPVC or PVC Ready

3rd-Party Remote Compatible

Sealed Combustion Chamber

Fan-Assisted Combustion

Built-in Combustible Floor Shield

Direct-Spark Ignition

Built-in Air and Water Pressure Switches

Inlet and Outlet Temperature Sensors

Automatic Reset Hi Limit Safety

Polymer Header with Built-in Bypass

Low-NOx Emissions Meet the Most Stringent Standards

Flame View Port

Outdoor Venting

3-Year Limited Warranty on Heat Exchanger

2-Year Limited Warranty on Parts

Stainless Steel Burners

Loch-Heat Ceramic Tile

ASME Construction

2-Line, 16-Character Digital Display

Password Security

Sealed Combustion Chamber

Fan-Assisted Combustion

Built-in Combustible Floor Shield

Loch-Heat Ceramic Tile

On/Off Switch

Built-in Air and Water Pressure Switches

Inlet and Outlet Temperature Sensors

Automatic Reset Hi Limit Safety

Polymer Header with Built-in Bypass

Flame View Port

Outdoor Venting