Gas Boilers

From single-family homes to large-scale apartment complexes, the Weil-McLain name is synonymous with warmth and comfort. Our energy-efficient, high quality gas and oil-fired boilers can be designed to fit the tightest spaces, with boiler controls and zone controllers tailored to any size residential application.

Evergreen Gas Boiler

Stainless Steel Fire Tube Heat Exchanger with non-metallic base

Floor Standing Boiler with optional wall mount kit

Sizes 220MBH, 299MBH, 399MBH

Modulating Condensing Boiler with 10:1 Turndown

95% AFUE (220/299); 96.5% Combustion Efficiency (399)

4 Pump/Auxiliary Outputs (Example: 1 boiler loop pump +3 zone pumps)

Up to 8 Multiple Boiler Control with lead/lag rotation

Modbus® to BMS connectivity

Each input can be assigned to a priority (Up to 3 Priorities)

Multiple Inputs can be assigned one priority (Zone Based Control)

All Lag Boiler Inputs and Output can be used

0-10 Volt Input (modulation or set point)

Configurable Auxiliary Input/Output System

Boiler Circulator Included

AquaBalance™ combi-boiler

Great things really do come in small packages. The new AquaBalance™ combi-boiler combines the unmatched reliability of Weil-McLain with the warmth of high-efficiency space heating and the convenience of on-demand domestic hot water. All in one elegant, space-saving package.

Balancing space. Balancing lives.

Features

94.4% annual fuel utilization efficiency (AFUE) – low fuel usage, saves energy

Natural or Propane (LP) gas operation – factory shipped as NG, optional LP conversion kit

Compact design – increases placement options

Heavy gauge insulated jacket – provides quiet operation

10-to-1 turn down ratio – precisely matches minimal energy usage to the immediate system need

Low NOx rated – low emissions level achieved South Coast certification

Single tube, large diameter, ASME certified 316L Stainless Steel heat exchanger

Pre-wired, plug-in ready electrical design

Contractor friendly removable sides – makes service clean and easy

Wall mounting bracket and hardware

Internal 3-speed Grundfos circulator

Reliable Honeywell® boiler controls with digital display

Commercial grade 120V power cord with 3 prong plug

Unique 3-in-1 vent adapter – approved to accept PVC, CPVC, SS or PP vent materials

Multiple vent options – direct vent with 2 pipes or concentric, through sidewall or roof

Internal condensate trap

24VAC thermostat relay

Water treatment – inhibitor and test kit

Peace of mind warranty