Weil-McLain products

Residential Boilers - High Efficiency Boilers

Weil-McLain AquaBalance - Model Series 2 - Compact High Efficiency Boiler

The Weil-McLain AquaBalance® Series 2 is a compact, high-efficiency boiler ideal for residential and light commercial use. With up to 95% AFUE, it offers both combi and heat-only models, delivering reliable space heating and domestic hot water. Key features include a durable stainless steel heat exchanger, ENERGY STAR® certified, and low NOx emissions.

Weil-McLain ECO Tec - Model Series 2 - Premium Residential Gas Boiler

ECO® Tec is Weil-McLain’s premium residential gas boiler. Designed to be easy to install and service, with a long-lasting firetube heat exchanger and our next generation, easy to use, color touchscreen control. The ECO Tec boiler is also available in a combi version, generating hot water output up to 5.4 GPM, making it the premium residential combi from the biggest name in boilers.

Residential Boilers - Controls

Weil-McLain - Model BCP-3 - Hydronic Multi-stage Boiler Control

The Weil-McLain BCP-3 is a multi-stage hydronic boiler control that improves comfort and energy efficiency by adjusting water temperature based on outdoor conditions. It features an easy-to-use display, DHW priority control, reset ratio adjustment, and lead stage rotation, ideal for precise temperature management in multi-boiler systems.

Boilers - Residential Boilers

Evergreen - Gas Boiler

Stainless Steel Fire Tube Heat Exchanger with non-metallic base. Floor Standing Boiler with optional wall mount kit. Available in 6 Sizes: 70, 110, 155, 220, 299, 399 MBH. Modulating Condensing Boiler . 95% AFUE (70-299); 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 (ECM version with 70-155).

Weil McLain - Model WM97+ CT - Wall Mount Gas Boiler

70,000, 110,000 & 155,000 BTU input models at 95% AFUE. Stylish, compact wall mount design for easy installation, service and maintenance. Unique condensing stainless steel fire tube heat exchanger design. Built-in boiler circulator. Built-in primary/secondary piping option. Pre-wired terminal strip for quick and easy electrical connections. Convenient indirect-fired water heater connection. Capable to vent with PVC, PP and SS up to 100`. Multi-color LCD display with text - no codes. CT - Condensing Technology - 5 to 1 turndown ratio. AquaLogic indirect fired water heater compatible.

Boilers - Commercial Boilers

SlimFit - Model 550-750 - Commercial Condensing Gas Boiler

Up to 93.9% Thermal Efficiency. Up to 94.7% Combustion Efficiency. 550,000 to 750,000 BTU/HR. Modulating Burner with 5:1 Turndown Ratio. Fast & Easy Out of the Box Installation. Lightweight, Compact Design Requires. Minimal Clearance. Low Nox Certified < 20 PPM. CSD-1 Compliant is Standard Feature. Approved for Common Venting. PVC, CPVC, PP or SS (AL29-4C) Materials Approved for Direct Vent and Direct Exhaust. Fully Customizable Outdoor Reset Curve. Lead/Lag Capability up to 8 Boilers with Lead Boiler Rotation. Remote Connection Using Standard Modbus or. Optional BACNET / Lonworks. High limit temperature control with maximum 200 degree F manual reset.

Weil McLain - Model EGH - Commercial Gas Boiler

Medium capacity cast iron commercial gas boiler. Combination Gas Valve and Regulator. Non-Linting Pilot Burner. Available in Steam. Factory Assembled Section Block. Horizontal to Vertical Draft Hood. Aluminized Steel Burners. Insulated extended steel jacket. Ideal for large homes, apartments and small commercial applications.

Weil McLain - Model LGB - Commercial Gas Boiler

Short draw rods permit faster, easier assembly of boiler sections. Includes factory-assembled base and burners, and simplified piping for quick and easy installation. Compact design allows for more piping and venting headroom. The highest efficiency commercial cast iron atmospheric gas boiler available by Weil-McLain. Built-in air separator diverts air to the expansion tank. Gas natural draft water and steam boiler with cast iron sections.

Heat Exchangers

Brazed - Plate Heat Exchangers

Made of high quality acid-resistant stainless steel with 99.9% pure copper brazing. Compact, lightweight, and designed for a variety of applications including radiant heating, snow melt systems and domestic hot water. Counterflow design resulting high turbulence and maximum heat transfer.