We understand that air handlers arecritical components in a building’s air conditioning system, and that the fan
technology selected for the air handler plays an enormous role in the unit performance: energy usage, sound level, reliability, and footprint. To ad vance the available technologies that address these critical performance factors, the CES Group
invented FANWALL TECHNOLOGY®.

Breaking up the airflow into a fan array allows designers to optimize fan wheel geometry and motor horsepower. The result is smaller fans and motors, running closer to their peak efficiencies and reducing energy costs.

A FANWALL® is a highly engineered array of high efficiency airfoil plenum fans. Instead of one or two large fans, now there is an array of smaller, quieter, and more energy efficient fans delivering the required airflow.

Fanwall Technology Benefits:

• Small fan sections – a FANWALL® array of any capacity or pressure requires a maximum airway length of 36 inches, compared to three or four times that amount for traditional fan systems.
• Greater flexibility in unit dimensions – designers can incorporate lower profile units if there are height restrictions.
• Higher efficiency and lower connected load – fans and motors are sized for optimum efficiency, which often results in a lower connected electrical load and a downsizing of electrical service.
  
• Reliability – redundancy of fan components adds to the unit’s reliability. If one fan fails, only that portion of the airflow is lost, unlike single fan systems in which the entire air handler goes offline. Moreover, the loss of airflow from one fan can be offset by increasing the speed on the remaining fans.
• Lower sound levels at critical frequencies – FANWALL TECHNOLOGY is based on the use of small, high efficiency fans running at higher speeds than traditional fans. Unhoused fans operating at higher speeds produce less low frequency sound. You can reduce and/or eliminate expensive acoustical
  attenuation materials and devices as a result.
  
• Lower total cost – a FANWALL array requires less cabinetry, less fan and motor support framework, and no sophisticated spring isolation system.

Benefits For Everyone

Owner

• Lower total cost of ownership
  - Redundant fans maximize uptime
  - Reduced energy usage lowers life-cycle cost
  - Direct drive—no belt or bearing maintenance
  - Small motors and fan wheels mean easier maintenance
  - Common replacement parts
  - Uniform air tunnel means longer filter life
• Reduced unit footprint means more useable building space for other purposes
• Lower sound levels
• Retrofit applications—less expensive to install and improved system efficiency
  - Easy to retrofit old fans in hard-to-reach places
  - FANWALL can fit through most hallways, doorways, or elevators

Architect

• Reduced unit footprint, as much as 33%, means more useable building space for other needs
• Reduced weight may reduce structural costs
• Wider range of air- handler aspect ratios enhances building design flexibility
• Reduced sound levels may eliminate expensive attenuation treatments or devices
• Innovative technology and energy savings can aid in LEED® building designs
• More usable space for the project•

Engineer

• Reduced footprint, as much as 33%— more access for other mechanical devices or more space for other uses
• Reduced weight may decrease structural requirements and improve seismic ratings
• Wider range of air- handler aspect ratios provides unmatched design flexibility for indoor/outdoor
  applications
• Unmatched system efficiency and stability for “off peak” design conditions in VAV applications
• Lower sound levels often eliminate energy-robbing attenuation devices
• Lower connected HP means smaller electrical switch gear and smaller standby generator(s)
• Low-profile feature helps in tight spaces and roof lines
• Innovative technology can aid in LEED® building designs

Contractor

• Fewer sections:
  - Lower crane cost—fewer lifts
  - Decreased labor costs for rigging, assembling, and installing
  - Improved staging logistics with fewer trucks
  - Lower storage costs due to reduced air- handler footprint and
  less sections
  - No fan-spring isolation required
• Ideal for fan retrofits
  - Expensive cranes or building structural modifications nearly eliminated
  - Maximum 22” wheel size and modular fan cells ease handling requirements
  - Fan cells fit through most hallways, doorways, or service elevators
  - No fan re-balance required
  - Improved system performance and energy savings enhances payback
  - Vaneaxial systems are ideal for FANWALL retrofit

Construction Manager

• Improved scheduling flexibility with fewer sections to coordinate
• Shorter airside installation schedule
• Reduced structural requirements may reduce construction schedule
• Less electrical switch gear to install and coordinate

Product Information

Huntair Fanwall Technology (pdf)

Huntair Fanwall Advantage (pdf)