About Ottmel
Commercial hot water and heating systems
Meet Ottmel
Dongying Ottmel New Energy Co., Ltd. was founded in 1994, formerly known as Shandong Precision Boiler Import and Export Co., Ltd. As one of the first high-tech enterprises in Shandong Province, it is also a leading brand in the clean heating industry.
Ottmel has always adhered to the corporate philosophy of “Winning by Quality, Integrity First”, integrating cutting-edge technology with energy conservation and environmental protection in its products. With a comprehensive and reliable after-sales service system, the company has become a top-ranked manufacturer of commercial hot water and heating equipment across all application fields.
continuously developing outstanding products that meet the demands of social progress. As a brand featured on CCTV, its sales performance not only leads the domestic market but also extends to overseas regions such as Russia and Indonesia. Ottmel provides global customers with safe, efficient, energy-saving, and environmentally friendly products, delivering a comfortable and convenient hot water and heating experience.
Production and R&D Capabilities
Ottmel continuously introduces advanced international production equipment from Finland, Japan, the United States, and Germany (such as enamel production lines, CNC punch presses, laser cutting machines, CNC bending machines, robotic welding systems, and electrophoretic coating surface treatment equipment). In addition, the company has an experienced R&D team dedicated to product development, striving for excellence, keeping pace with the times, and continuously developing outstanding products that meet the demands of social progress.
Enterprise Technology Patent
Ottmel has focused on the field of commercial hot water for 30 years. The company continuously follows a path of specialization, technological advancement, and industrialization, carrying out a long-term brand development strategy. With the pursuit of “excellent design and advanced manufacturing processes” as its goal, Ottmel has not only obtained multiple utility and invention patents but has also received numerous honorary certificates.
Price
Owning a factory and leveraging supply chain costs results in lower prices and higher performance.
Power
We offer a wide range of products covering voltage, capacitance, and upper/lower limits. Please expand this paragraph.
Environmentalfriendly
Deeply rooted in the commercial hot water and heating sector, we adhere to energy-saving technologies and low-carbon operation and maintenance principles.
Why Choose Us
Three Reasons
Price
Power
Environmental Friendly
Core Technology
BLUE-ARMOR° blue-armor enamel inner tank
Ottmel water heater inner tanks feature Baosteel BTC340R enamel steel plates, double-layer U.S. Fluor blue-armor enamel, pre-coating cleaning and sandblasting, and pressure-tested resistance to high temperature, pressure, impact, corrosion and scaling.
Welding process
Ottmel water heater inner tanks adopt automated gas-shielded welding: top cover-cylinder joints are welded first then enameled, while bottom cover-cylinder joints are enameled first then welded, ensuring flawless welding and full seamless blue-armor coating coverage.
Dual-layer blue-armor coating
Ottmel inner tank coatings adopt Fluor’s proprietary blue-armor formula: fired at 870–950°C and recoated with enamel, the layer matches the steel cylinder’s thermal expansion coefficient to avoid cracking, resists three major water-induced corrosion types, and inhibits bacterial adhesion for hygienic water use.
Sandblasting treatment process
Ottmel inner tank walls are sandblasted for a dense, fine texture to boost coating adhesion; high-temperature firing creates a serrated interlocking bond, enhancing performance and extending the tank’s service life.
Inner tank testing
Designed in accordance with the highest European standards for pressurized inner tanks, it has passed corrosion-resistance testing in a sealed environment at 100°C for more than 200 hours with continuous calcium bicarbonate injection. The testing requirements are even more stringent than those of the WaterMark standard.
SPOILER-FLUE® high-efficiency turbulent heat exchange technology
The high-efficiency turbulent heat exchange piping system combines heat exchange and condensation functions; its heat exchange surface area is five times that of conventional flue tubes under equal conditions.
The material is a silicon-aluminum alloy, which not only enhances heat transfer efficiency but also provides corrosion resistance.
PRE-MIX® fully premixed combustion technology
NOₓ emissions < 30 mg (meeting regional standards); metal fiber surface combustion paired with triple-pass heat exchanger and high-efficiency turbulent heat exchange tech achieves 107% thermal efficiency.
Silent combustion at 57 dB, comparable to normal conversational volume.