Benefits of FANWALL® Systems

Get the FANWALL Advantage

Application ExpertsShorter FootprintQuiet and Lower VibrationOptimized Performance and Energy EfficiencyRedundancyLower Maintenance CostsIdeal For Retrofits

Application Experts

With FANWALL systems, you can be assured that you are receiving the optimum system, customized to match your new construction or retrofit application requirements. 

Since 2003, more than 100,000 FANWALL cubes have been installed throughout the world in applications ranging from offices, education, and hospitality facilities, to facilities with critical requirements such as hospitals, data centers, and pharmaceutical manufacturing.  Among these applications are some of the highest profile buildings in the world.

Huntair's experience, expertise, and sole source responsibility in the design, manufacture, and application of fan array components and systems is unmatched in the industry.

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FANWALL Cubes Installed

Installation Application

Dramatically Shorter Footprint

A typical FANWALL section is only 48 inches in length compared to 120 to 150 inches for a conventional single fan.  Overall air handler length can be reduced by 30 to 70 percent using a FANWALL system, providing added benefits for all stakeholders in the building process:

  • Designers benefit from an easier fit for space limitations.
  • Architects can devote less space to mechanical equipment rooms.
  • Owners can have more leasable space to generate revenue.
  • Contractors have smaller sections/components to handle and install.  For retrofit applications, individual cubes can be navigated through standard 3 foot doors and easily assembled on site.

Example: 25,000 cfm air handler designed to the same specification with different fans.

FANWALL System Installation


Shorter Footprint

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Quiet Operation and Low Vibration

FANWALL systems have been designed to produce significantly lower vibration and sound — often 16 to 18 dB less in lower octave bands — than single fan alternatives.  Careful attention to balance in the design and construction of individual fan cubes can eliminate the need for costly concrete inertia bases and spring isolation systems, helping to reduce construction costs and simplify retrofit projects.  The smaller direct drive fans and motors and the patented Coplanar Silencer® that cancels noise within each cube, combine to produce an environment where conversational speech is possible in the airstream while the unit is in operation.  In most cases, this eliminates the need for sound attenuators and their associated static pressure penalty.

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FANWALL systems are quiet, particularly in lower octave bands, often eliminating the need for sound attenuators.

Optimized Performance and Energy Efficiency

Even piston of airflow through tunnel
A FANWALL system creates an even piston of airflow through the air tunnel to provide more uniform air velocities across filters and coils.

FANWALL systems optimize air handler performance in four ways when compared with conventional fan systems:

  • Create an even piston of air by using multiple sources of airflow proportionally targeted at each section of the coil to enhance heat transfer and promote more even filter loading.
  • Eliminate belts, sheaves, and bearings that require routine maintenance and will degrade performance over time.
  • Can eliminate the need for sound attenuators and other ancillary components that create a static pressure penalty within the air handler.
  • System optimization controls allow on/off control of individual fan cubes to closely match requirements in variable airflow applications with the optimum number of fans and motors operating at peak efficiency.

Whether modeled or not, these factors create a high efficiency system that, along with all other benefits, make FANWALL systems an ideal choice for new or retrofit applications.

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Protecting critical assets and minimizing downtime exposure for revenue generating processes is a primary benefit of FANWALL systems.  With conventional single fan and motor systems, a failure of either component shuts down the entire air handler system.  This creates a critical path failure that requires immediate, costly action to restore function and minimize revenue and profit losses.  When a fan or motor failure occurs in a FANWALL system, the remaining operating fans can compensate to maintain airflow and static pressure until such time that the failed component(s) can be repaired or replaced.

In addition to providing "peace of mind" for owners, the reliability provided by FANWALL systems can eliminate the necessity and the cost of having a standby unit to provide comparable redundancy. Where true N+1 redundancy is desired, the configurability of a FANWALL system — including the tremendous number of fan and motor sizes and combinations — allows designers to achieve it at the lowest connected load. This avoids the added motor and electrical service costs, and the energy penalty resulting from oversizing motors to achieve the same result.

While FANWALL systems were initially used primarily in critical applications, such as surgical suites and data centers, their use has expanded to include any application where a critical failure is undesirable.  Today, FANWALL systems are commonly installed in hospitals, schools, offices, performing arts centers, hotels and more.

FANWALL systems provide redundancy where other fan systems cannot. 


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Lower Maintenance Costs

FANWALL systems use direct drive fans with no belts, sheaves, or bearings that require routine maintenance or replacement, and permanently lubricated motors.  As a result, with the exception of occasional cleaning, there is no required maintenance versus a conventional single fan system.  This alone can add up to significant savings over the life cycle of the system.

Components in a FANWALL system are typically significantly smaller, more lightweight and easier to access than the same components for conventional fan systems.  For example, a 5 hp motor typically weighs about 75 pounds versus 550+ pounds for a 40 hp motor.  When repair or replacement is required for a component in a FANWALL system, it can typically be accomplished by one or two maintenance personnel without requiring mechanical lifts.

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Lower Mainteance Costs

FANWALL systems eliminate belt, sheave, and bearing maintenance.

Ideal for Retrofits

FANWALL Retrofit

FANWALL Retrofit

Using a FANWALL system to replace older, end of life fans in existing air handlers can be the most cost effective solution for avoiding the cost and business disruption of an air handler failure, while delivering energy savings as high as 40%. Retrofits using a FANWALL system have occurred in applications ranging from offices, education, and hospitality facilities, to facilities with critical requirements such as hospitals, data centers, and pharmaceutical manufacturing.

In many cases, access limitations are a barrier to a fan or air handler replacement because it cannot be accomplished without the time and expense of a major tear-out and reconstruction project.  A FANWALL system can minimize this and other barriers.

  • An air handler cabinet can retain its integrity well beyond fans, coils and other components, allowing it to be retained with a new FANWALL system
  • The modular design of FANWALL system allows individual cubes to be navigated through a standard 3-foot door and assembled inside the existing air handler cabinet.
  • There is no need to have a crane on site as is often the case with larger, more conventional fans.
  • The performance of the new system can be upgraded to better match actual capacity and airflow requirements.
  • Ancillary components such as sound attenuators and air blenders that created static pressure penalties in the old system can be removed.
  • Design flaws and other maintenance concerns — such as component access issues and corrosion — can also be addressed, essentially resulting in a new, more efficient air handler in an old skin.
  • Retrofits often can occur over a weekend or during unoccupied time frames to minimize downtime or disruption of normal business.

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For an assessment of retrofit options for your existing air handlers using a FANWALL system, please contact your local Representative.

19855 SW 124th Avenue
Tualatin, OR 97062
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TEL: 503.639.0113
FAX: 503.639.1269