Weil-McLain

ATI has partnered with Weil-McLain to bring you a wide selection of the most durable, high-output boilers on the market.
Weil-McLain offers a broad spectrum of high-efficiency gas-fired, oil-fired and combination oil/gas boilers for commercial use.
Markets: Schools, Federal Buildings, Apartments, Condominiums, Office Buildings, Casinos, Hospitals, Hospitality, Restaurants, Industrial Facilities
Stainless Vertical Firetube Boiler (SVF)
The SVF boiler offers the latest in thermal heating technologies to deliver everything you need in a complete and aesthetically pleasing package. Equipped with a proprietary, clover-shaped, firetube design — the SVF heat exchanger is bolstered by enhanced and surface area for optimum heat transfer to provide industry-leading thermal efficiencies up to 97.1%.
SlimFit Commercial Condensing Boiler
The SlimFit is ideal for retrofits with tight space limitations, and was made to be able to comfortably be wheeled through a standard-width mechanical room doorway to move it where it’s needed. It is durable, reliable and easy to install. It arrives completely assembled and is ready to go out of the box. It is even pre-wired, pre-programmed and tested in the factory.
Evergreen Gas Boiler
The Evergreen line includes 3 models of modulating condensing boiler with a 10:1 turndown. These impressive gas-fueled boilers feature a stainless steel fire tube heat exchanger and non-metallic base. Evergreen Gas Boilers have 95% AFUE (EVG 220/299 models) and 96.5% Combustion Efficiency (EVG 399).
80 Commercial Gas/Oil Boiler
Uses gas and/or light oil for fuel, gets 80% thermal efficiency, produces water or steam, comes with/without a burner, has a convertible flue and is easy to install.
88 Series 2 Commercial Gas/Oil Boiler
Fueled by gas and/or oil, 85% thermal efficiency, water or steam, numerous settings, works with single/multi-boiler systems and with/without a tankless heater, and is 100% LEED compliant.
94 Commercial Gas/Oil Boiler
The largest cast iron boiler in production of any manufacturer. Runs on gas/gas and light oil, gas tight cast iron with strong cross-sections, 86.7% thermally efficient, hydro-wall design with maximum circulation, easy maintenance/assembly and up to 80 lbs. working pressure.
EGH Commercial Gas Boiler
Gas-fueled with gas valve and regulator, cast iron construction with insulated steel jacket, water or steam, medium capacity that is ideal for apartments and smaller commercial buildings.
LGB Commercial Gas Boiler
Weil-McLain's most efficient commercial cast iron gas boiler, a natural draft water/steam boiler, has built-in air separators, is highly compact to allow greater headroom, and assembly/installation are fast and simple.