One of the most respected names in the commercial hydronic heating business is Weil-McLain®. They offer an expansive lineup of oil and gas boilers across a wide range of capacities, all backed by the quality and reliability of Weil-McLain and its representative distributors, such as the Ryan Company.
Manufacturers
Weil-McLain


About the Weil-McLain® Company
Founded in 1881 in Chicago by Isadora and Benjamin Weil, Weil-McLain was originally Weil Brothers. In 1918, the Weil brothers acquired a leading supplier, J.H. McLain Company, and the Weil-McLain® brand was born.
Manufacturing in Michigan City, Indiana, for over 100 years, it has grown into the largest U.S. manufacturer of cast-iron boilers under the Weil-McLain brand. With an additional manufacturing location in Eden, North Carolina, the company brings its heritage into the 21st century, introducing innovations to offer a complete line of industry-leading, high-efficiency, condensing Weil-McLain boilers that live up to the brand’s reputation for innovation, quality, and durability.
The Future is Now at 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, and facility managers rely on Weil-McLain boilers for their comfort heating needs. Installed in 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.
Weil-McLain hydronic boilers and indirect-fired water heaters integrate the latest in advanced controls and materials, including cast-iron, stainless-steel, and aluminum heat exchanger technologies. Products are engineered for aesthetics, functionality, safety and structural tolerance. The reliability and energy efficiency of our products have helped make Weil-McLain the largest boiler brand in North America.
By combining our trusted expertise with the responsiveness of our support operations, tools and programs, we provide our customers and contractor partners with added value and peace of mind. Building on a reputation for quality, durability, and innovation for over a century, we are committed to creating Solutions that Matter™.


The Weil-McLain Product Lineup
With over 150 years devoted to engineering and manufacturing the highest quality boilers, you would expect Weil-McLain to have an expansive range of products, and you’d be right! Today, the Weil-McLain catalog features hundreds of boilers across an extensive range of heating capacities for oil, gas, and combi fuels, in models that produce either steam or hot water. Given the scope of the Weil-McLain line, we’ll look at examples of their Evergreen® Pro Gas Boilers, SlimFit® Commercial Condensing Boilers, and SVF™ Stainless Vertical Firetube Boiler Series.
Please note that we are authorized to offer the full range of Weil-McLain commercial products. If neither of the two examples meets your needs, don’t hesitate to get in touch with us.

Evergreen® Pro Gas Boiler
The Weil-McLain Evergreen® Pro boiler is an ideal solution for light commercial use in both single and multi-unit installations with ZoneStacking that supports multiple boilers in up to 24 programmable zones. These boilers look good, operate quietly, are easy to program, and can be installed in either wall-mounted or floor-standing configurations.
Key Features
- High Efficiency: 95% AFUE (110–299); 96.5%
- Available in 5 Sizes: 110, 155, 220, 299, 399 MBH
- Quick Setup: 10 heating system presets, and an intuitive setup wizard
- Installation Choices: Wall or floor mounted
- Boiler Type: Modulating hot water condensing with stainless steel fire tube heat exchanger
- Fuel: Natural gas or propane
- Flexible Configuration: Single or multiple boiler systems for up to 24 programmable zones
- Compatibility: Works seamlessly with SlimFit® and SVF™ commercial boilers and the Aqua Plus® and Aqua Pro® Indirect Fired Water Heaters

SlimFit® Commercial Condensing Gas Boiler
The SlimFit® high-efficiency condensing boilers are engineered and built for fast, easy installation in new and existing commercial and institutional settings, including religious, educational, and government buildings. These “plug and play” units connect easily on-site, lowering installation costs and ensuring timely project completion.
Key Features
- High Efficiency: 95% AFUE (110-299); 96.5%
- Available in 5 Sizes: 550, 750, 1000, 1500, 2,000 MBH
- Durable Performance: Cast aluminum heat exchanger delivers 12 times better heat transfer than stainless steel
- Plug and Play: Factory-wired, pre-programmed, and test-fired
- Fuel: Natural gas or propane
- Retro-Fit Ready: Time-proven sectional design perfect for cast-iron section boiler high-efficiency upgrades

SVF™ Stainless Vertical Firetube Boiler
The SVF™ boiler streamlines set-up and installation, saving time, labor and money. Guarding against wear and tear with its corrosion-resistant and durable materials, Weil-McLain’s new Stainless Vertical Firetube boiler delivers energy efficiency and reliability. A leading-edge addition to our commercial boiler portfolio, it meets all standard bid specs for new construction.
Key Features
- High Efficiency: Industry-leading thermal efficiency up to 96.8%
- Durable Exchanger: Vertical, stainless steel heat exchanger
- Flexible Sizing: Available in 4 sizes: 1500, 2000, 2500 & 3000 MBH
- Fuel Options: Water boiler with natural gas and propane fuel options
- High Pressure: 160 psi working pressure
- Wide Modulation: Up to 10:1 turn-down ratio
- Easy Maintenance: Easy access, replaceable stainless steel condensate tray
- Install Friendly: Integrated roller casters and leveling legs for contractor-friendly installation
- Compact Design: Standard “door-fit” design
- Zero Clearance: Zero clearance, side-by-side installation capable
- Smart Controls: Advanced UnityTM 2.0 control system with built-in set-up wizard (70–3000 MBH compatible)
The Ryan Company
The Ryan Company — Proudly Serving Minnesota, North Dakota, South Dakota and Western Wisconsin Since 1970
The Ryan Boiler Company is the newest Weil-McLain distributor in the Upper Midwest. Our dedicated team has been working with engineers and contractors since 1970 to design and install a wide range of commercial and industrial heating solutions. Once installed, our service staff have the training and in-the-field experience to keep your energy-efficient commercial boiler or industrial heating system performing as designed for years to come. Our dedication to quality and service matches Weil-McLain’s, and together, we deliver hot water and heating efficiently and safely for less than your current system — it’s just that simple.
Don't Wait Until Your Boiler Fails
Don’t wait if your boiler-based hot water and heat systems are on life support. Contact the Ryan Company at 952-915-6475 for the best Weil-McLain steam and hot-water solutions in Minnesota, North Dakota, or South Dakota. We’ll help you get into hot water, but in a good way!












