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Weil-McLain® Upgrades ECO® Tec Series 2 with Multi-Boiler Functionality

May 19, 2023

Burr Ridge, Ill. – (January 20, 2023) – WM Technologies, LLC, North America’s leading boiler manufacturer, makes multi-boiler functionality control easier with the introduction of the Weil-McLain® ECO® Tec Series 2 high-efficiency residential boiler. Featuring the same components, design advantages, features and accessories as the original ECO Tec unit, the Series 2 features integrated control software that allows for multiple boiler configurations without the need for a third-party control component.


ECO Tec Series 2 Model Allows Technicians to Connect and Operate Up to Eight 

“With an optional multi-boiler wiring kit, users can connect and operate up to eight high-efficiency ECO Tec boilers simultaneously to satisfy the needs of larger structures like homes or apartment buildings,” said Mike Boyd, product manager with Weil-McLain. “Having complete control over the system also means there is no need to add expensive external sequencing control software to initiate, interrupt or terminate boiler commands.”


Another defining feature of the Series 2 is its compatibility with the Weil-McLain ProTools™ App via Bluetooth®, which allows contractors and technicians to view operational logs that provide trending data for monitoring system performance and detailed information for potential fault conditions. The connected “at boiler” features include a user-friendly dashboard, fault and warning lookup, software update options and a “clone to phone” setting that can copy settings from one boiler to another to make installation easier.


“Following in the footsteps of the original ECO Tec, the Series 2 offers superior performance and energy-efficient comfort home heating,” added Boyd. “Featuring touchscreen control for multi-zone and other advanced capabilities, contractors will appreciate the ease of installation, use and service while homeowners enjoy targeted warmth and comfort when and where they need it.”


“As the busy heating season continues, contractors will appreciate ECO Tec’s multi-boiler functionality and connectivity to the ProTools App – both designed to make their jobs easier,” Boyd added.


Designed to meet the demanding needs of residential replacement applications, the ECO Tec Series 2 features a 95% AFUE rating and is among the most energy efficient residential boilers on the market today. It features a long-lasting stainless steel fire tube heat exchanger, built-in zone control and heating system presets, and is available in four heat-only sizes ranging from 80-199 MBH and three combi-version sizes of 110, 150 and 199 MBH. Additionally, it is versatile in its placement options as the wall-mount design frees up valuable floor space while an optional pedestal can be used for floor-standing installations.


Other key features of the ECO Tec Series 2 include:


  • Unity 2.0 control equipped with ten preloaded system-type options and a guided setup wizard
  • Up to 10:1 turndown ratio that self-adjusts to minimize fuel usage
  • Low NOx emission certified
  • NSF/ANSI 372 certified domestic hot water components
  • Built-in energy-saving ECM circulator to conserve energy
  • Built-in zone control that can operate up to 4 circulators (plus internal)
  • Natural or propane gas capable
  • Multiple venting options for different home styles and buildings


To learn more about the new ECO Tec Series 2 high-efficiency residential boiler, visit or locate a Weil-McLain regional sales office at For more information about the Weil-McLain ProTools App, visit or download the app via the App Store.


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About Weil-McLain

Weil-McLain® is a leading North American Brand of hydronic comfort heating systems for residential, commercial and institutional buildings, since 1881. Contractors, engineers, architects, homeowners and facility managers alike rely on Weil-McLain boilers for their comfort heating needs. Installed in homes, offices, schools, restaurants, hotels and other facilities throughout North America, the Weil-McLain brand is among the most trusted and often used in the building industry.


WM Technologies, LLC, assembles, sells and distributes Weil-McLain boilers, based out of Eden North Carolina. The Marley-Wylain Company, LLC, manufactures and processes traditional Cast Iron products, based out of Michigan City, Indiana. With approximately 600 employees within manufacturing facilities, sales locations across the US, and administrative offices in Burr Ridge, Illinois, Weil-McLain is the trusted leader in hydronic comfort heating systems. Additional information is available at