United States Watertube Boiler Market Size, by Fuel Type (2025–2032)

The US Watertube Boiler Market recorded USD 293.98 million for coal-fired boilers in 2025, reflecting continued reliance on conventional thermal power generation and industrial process applications. Natural gas-fired boilers dominated the segment at USD 776.22 million, supported by cleaner fuel adoption and efficiency-driven modernization of industrial steam systems. Oil-fired and other alternative fuel boilers accounted for USD 216.78 million and USD 253.14 million, respectively, maintaining steady demand across manufacturing and utility sectors. In 2027, the natural gas boiler segment is estimated to reach USD 852.50 million as industries increasingly prioritize high-efficiency, lower-emission fuel options.
From 2027 to 2032, the US Watertube Boiler Market is expected to expand steadily, with natural gas boilers projected to reach USD 1,043.92 million by 2030 and other fuel types projected to grow to USD 428.69 million by 2032. Market growth is supported by industrial expansion, rising adoption of energy-efficient technologies, and continued replacement of aging boiler systems, while sustained investments in cleaner and reliable fuel solutions reinforce long-term demand across all fuel categories.