New Yorker offers a variety of boilers for the residential heating market. We have a complete line of cast iron and steel boilers, some with AFUEs as high as 87.8%. Our boilers are available in gas fired water & steam, and oil-fired water & steam. DOE heating capacities for these boilers range from 31 MBH to 244 MBH. As with every New Yorker Boiler, these products are manufactured with safety, economy, and serviceability in mind.