Conserve energy and increase efficiencies with the Fulton Vantage™ condensing firetube boiler. Suitable for hydronic heating, this conventional boiler features linkageless modulation, dual fuel abilities and a lifetime thermal shock warranty. This Vantage boasts a high-mass/duplex steel design with interchangeable burner arrangements. It has the ability to operate in condensing mode while using # 2 ultra-low sulfur oil. Available in 2,000, 3,000, 4,000, 5,000 and 6,000 MBH input.