Industrial Combustion Blowers & Fans
Engineered to optimize combustion efficiency & reliability.
AirPro // Applications
Combustion Air Blower & Fan Applications
Combustion air blower systems are essential in power plants and process manufacturing environments where fuels like natural gas, oil, or wood are burned in boilers, furnaces, kilns, ovens, incinerators, dryers, and process burners.
Effective combustion relies on three key elements: fuel, oxygen, and an ignition source. The combustion air blower delivers the steady, reliable airflow (oxygen) required to keep the flame going in a combustion process. If any one of these elements is missing, the process halts, making it critical that every component of the combustion air system operates in sync for optimal performance and safety.
Primary Industries for Combustion Air Blowers & Fans
Many varied industries from food processing and energy, to metals, plastic, glass, paper, and pulp processing use combustion air blowers for heating and drying purposes.
Combustion Air Blower Technology Selection & Specification
With a low flow-to-pressure ratio, a narrow pressure blower radial wheel is a frequent go-to for combustion air blowers, but there are several models that we use depending on the specific application.
Industrial Fan Designs Commonly Used for Combustion Air Blowers
- Pressure Blowers (P##A/B/C/D/G)
- Custom High-Pressure Blowers (XP#O/S)
- Backward Curved (BCHS, BCLS, BCMS)
- Backward Inclined (BIHS)
FEATURED FAN
Pressure Blower for a Combustion Burner on a Thermal Oxidizer
Engineered for high-pressure performance in a compact footprint, this pressure blower was custom-built for a combustion burner on a thermal oxidizer system in Texas. Designed for durability and speed, the airstream and fan wheel were fabricated from corrosion-resistant 304L stainless steel to ensure longevity in demanding thermal environments. The blower features a direct-coupled Toshiba motor, delivering efficient and reliable performance at high speeds.
Mounted on a clean, minimalist pedestal base, the unit includes a carbon steel inlet filter canister finished in a distinctive sea green enamel, adding both visual appeal and practical filtration. With its tight footprint and robust construction, this Arrangement 4 blower offers a powerful, efficient solution for combustion applications.
- Product Type: P06A
- Description: Class 50, Size 175, Arr. 4, 150ºF max temp design
- Performance: 1,275 CFM @ 20″ wg static pressure
- Features: Custom-designed; 304L stainless steel airstream and wheel; 7.5 HP direct-driven IEEE 841 TEFC motor; pedestal mount; carbon steel inlet filter with sea green enamel; compact, high-speed design
Combustion Blower & Fan Arrangements
Fan arrangements indicate how the motors mount to and drive the fans. The combustion air blower typically calls for an Arrangement 4 direct-drive motor with a variable frequency drive, but on very large systems it’s likely to be an Arrangement 1 belt-drive motor. These are the arrangement options:
Industrial combustion fan designs commonly used:
Arrangement 1 – Belt Drive with an overhung impeller. The fan and motor mount separately to a unitary base.
Arrangement 4 – Direct Drive with an overhung impeller. A low-cost arrangement, the fan wheel mounts directly on the motor shaft.
Fan Accessories & Design Considerations for Combustion Applications
When it comes to design and accessories, it’s all about protecting and optimizing operations, maintenance, and life of the fan and bearings. Although proximity to high-temperature systems might suggest the need for special materials of construction, the air that goes through the forced draft combustion air blower is room-temperature ambient air, so standard materials usually suffice.
Airflow is commonly controlled using a combination of variable frequency drives (VFDs) and inlet dampers. Together, these components enhance boiler efficiency, improve system reliability, and deliver measurable energy savings. For industrial combustion air blower applications, we often recommend:
- Flow Control Options – includes inlet vane dampers, variable frequency drives (VFD), outlet dampers, or a combination, each offering control over airflow volume and pressure
- Inlet Silencer – for noise control on the fan inlet
- Inlet Filter or Screen – to keep dust and debris from entering the airstream, preventing damage
- Proper Installation and Maintenance – to ensure safe startup and operations
- Vibration and Temperature Sensors – to monitor bearing and fan health in real time, enabling predictive maintenance and reducing unplanned downtime
Connect with a Combustion Air Blower & Fan Expert
Our experienced application engineers are ready to help you find the right fan. Whether you’re replacing an existing unit or designing a new system, we’ll make sure you get a solution that fits your specs, timeline, and budget.
Call, email, or submit your info to get started and our team will respond quickly.
