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Nautilair Pro 14"

Custom Design Options Available 

Nautilair Pro 14" Combustion BlowerThe Nautilair® Pro 14" combustion blower provides:

  • Air power to reach heating levels up to 6M BTU/hr
  • The highest sound reduction design
  • High power density for improved performance, offering up to 1700 CFM and 28 inches of water
  • Easy installation and retrofit. Design flanges are the same size as the existing Nautilair® 12.3"
  • Global compatibility with three-phase line voltage of 380-575 VAC
  • Compatibility with Siemens PBA137 valve and LMV-3 controller

Hydronic systems today oftentimes require larger boilers that need more air flow. With the addition of the 14blower to the existing line of 7.6", 8.9", and 12.3blowers, AMETEK DFS' end-to-end product line can accommodate air power levels from .05M up to 6M BTU/hr and voltage inputs of 120VAC, 240VAC, and now 380-575VAC. The Nautilair® combustion blower line offers a comprehensive selection for the most common applications on the market today.

For more than 20 years, AMETEK DFS has manufactured Nautilair® combustion blowers. These variable speed brushless blowers are engineered to deliver a measured air/fuel mixture in gas-fired burner systems for optimized combustion as well as reduced nitrous oxide and carbon monoxide emissions. These combustion blowers offer practical solutions for a wide range of applications, including commercial and residential boilers, hot water heaters, furnaces, food service equipment, kilns, and fuel cells, among others.

The Nautilair® combustion blowers serve as ideal alternatives to conventional speed and two-speed blowers; intake damper systems on fixed speed blowers; and inverter-driven variable speed blowers. When used with a modulating gas valve, these compact, lightweight, rugged, and high-speed blowers can suit a wide range of system designs.

The speed can be adjusted internally with an onboard potentiometer or with an external PWM or DC control that actively varies the blower’s performance, eliminating the need for complex air intake damper systems. Internal electronics convert AC input to DC, and the blowers typically operate in excess of 20,000 hours, virtually maintenance-free.

To learn more about how the AMETEK DFS Nautilair® combustion blower product line can help you differentiate your hydronic systems in the marketplace, fill out the form here.

  • Design Options +

    Options for Nautilair 14" Brushless Combustion Blowers
    Performance Voltages Speed Control Options Speed Regulation Stages Agency Certification

    Max Flow: 1700 CFM (2888 m3/hr)

    Max Pressure: 28 inch H2O (70 mbar)

    380 - 575 VAC Three Phase

    0-10 VDC


    Open Loop

    Closed Loop







    Operating Temp: 0oC to 50oC   
    Storage Temp: -40oC to 85oC

    Design Features: Designed to provide variable airflow for low NOx and CO emissions in high efficiency gas-fired combustion systems. Built with non-sparking materials. Blower housing assembly constructed of die cast aluminum. Impeller constructed from hardened aluminum. Rubber isolation mounts built into the blower construction to dampen vibration within the motor. Two piece blower housing assembly sealed with O-ring gasket fro combustion applications. Customer is responsible to check for any leakage once the blower is installed in the final application. Intake and exhaust tubes, all cooling ducts and vents must not be obstructed. Intake and exhaust must be free of grease, oil and foreign particles. Blower to be mounted so ventilation air cannot be recirculated. 
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  • Data Sheets +