Frequently Asked Questions

The ribbed wall of the AeroWall
How long does it take to install an AeroWall?
The AeroWall was designed to be installed within a typical service window — approximately 2.5 hours.
What can my expected fuel savings be?
Open-road, real-world testing demonstrated 4.9% fuel savings, however there are many variables that may affect your results including the width of your gap, the desired placement of the fifth wheel and the severity and direction of crosswinds when on the road.
How Are Fuel Savings Calculated?

Read more: Fuel Savings

The AeroWall was designed to allow you to move your fifth wheel back to its optimal position, near the mid-point of the rear axles. If you currently have a narrow gap because the fifth wheel is set forward, your fuel savings gain will be somewhat less, but your improvements in safety will be more pronounced.
Fuel savings are calculated by measuring the improvement in fuel consumption versus the baseline for a specific truck, plus the difference in degradation between the test vehicle (with AeroWall) and the control vehicle (without AeroWall) when driven in crosswinds. The stronger the crosswinds, the greater the fuel efficiency.
Is the AeroWall SmartWay or CARB Certified?
No. There are currently no SmartWay testing methodologies that are applicable for validating tractor-mounted aerodynamic devices that result in fuel savings. While many technologies may provide fuel savings, SmartWay verifies only specific technologies that have validated fuel savings or demonstrated performance levels, AND there is a clear need to assist fleets in differentiating between individual products. Currently, the specific technology devices only include low resistance tires, trailer-based aerodynamic devices and long duration idle reduction technologies. There are no other products in the market similar to the AeroWall and there are no standardized testing methodologies or SmartWay Certification for tractor-based gap reduction technologies.
What is the payback period?
The payback period is approximately 12 months when spending $70,000 in fuel cost per vehicle, per year. Your results may vary, largely depending on fuel economy gains already realized (side fairings and narrow gaps) and crosswinds.
What is my return-on-investment (ROI)?

Read more: Cost Effective

The return on investment for a vehicle that has a four-year duty cycle is approximately $10,000 over four years. The AeroWall may be transferred from tractor-to-tractor, to extend your savings. It may also be sold as a system when replacing the tractor.
Does the AeroWall require scheduled or general maintenance?
No. The AeroWall requires no maintenance. The motor unit has no internal or external filters that require scheduled or frequent maintenance.
Does the AeroWall need to be manually retracted to allow access to the back of the cab for hoses, vehicle maintenance and inspections?
No. The AeroWall automatically retracts at vehicle speeds of less than 40 mph. The AeroWall moves out of the way with no driver intervention, allowing for access the cat walk for routine inspection and to electrical lines, air hoses and load locks.
How long is the AeroWall warrantee?
The AeroWall mounting system has an unlimited mileage, 2-year warrantee. The deployment and motor units have an unlimited mileage, 1-year warranty. The AeroWall is fully transferrable from vehicle to vehicle.
How reliable and durable is the AeroWall?
The default position for the AeroWall is retraction, where it is out of the way. In the event of any failure during deployment, the AeroWall passively retracts. The AeroWall has been tested for over one-million miles and has been free of failure. The motor does not use or interfere with any on-board computers or air lines. The motor has gone through extensive accelerated reliability testing and has been certified for 30,000 hours of continuous operation.
Does the AeroWall derive its power from the truck’s computer panel or air systems?
No. The AeroWall is independent of the tractor’s computer, electrical and air system hoses. The motor pulls power from the tractor’s native battery system.
Can I expect other savings in addition to fuel efficiency?
Yes. The AeroWall allows a fleet to move the fifth wheel back without sacrificing fuel economy. Fleets can move the fifth wheel to a more desirable position for weight distribution and road safety. Moving the fifth wheel back improves the swing turning radius during articulation, eliminating expensive repairs to damaged side cab fairings. In addition, tire wear and wear steering gears and suspension is lessened. Road safety is dramatically improved (see next).
Are there other benefits to the AeroWall?

Read more: Improved Safety

Yes, truck stability improves, minimizing lane departures. With the AeroWall the truck moves straight down the road with little steering wheel adjustment, reducing driver fatigue and improving attentiveness. In wet road conditions, visibility improves for the driver and the passenger vehicles sharing the road.
Can the AeroWall be customized to match my fleet colors?
Yes. If the order is sizable enough, this may be done without upcharge. Custom logos and slogans may also be created for an additional charge. Fleets may elect to co-brand the product and defray some of the purchase costs. AeroWall Dynamics does not participate in advertising revenue sharing arrangements.
Is the AeroWall affected by temperature extremes?
The AeroWall has been thoroughly tested from -22° to +122° F.
Are the benefits of the AeroWall additive with other aerodynamic devices?
The aerodynamic benefits of the AeroWall are additive when used in conjunction with other drag-resistant technologies. When used in a systems approach, the aerodynamic benefits do not equal the sum total of each of the individual devices. Computerized fluid dynamic models suggest that the AeroWall would enhance the effectiveness of other aerodynamic devices such as the Trailer Tail and trailer skirts.
How much does the AeroWall weigh?
The AeroWall weighs approximately 300 pounds and is mounted to the back of the tractor. Mounting the AeroWall on the tractor results in an even distribution of weight over the steer axle and the drive axles.
Does the AeroWall work with any tractor-trailer configuration?
The AeroWall is built to accommodate different configurations and certain specialty carriers. The AeroWallLP (low profile) is used where the gap is narrow and the fleet does not want to move the fifth wheel back. The AeroWall comes in a variety of widths to accommodate most configurations. The AeroWallRF (refrigeration) is used for tractors that pull refrigeration units. The company has developed an AeroWallNG (natural gas) unit for fleets that maintain natural gas tractors. The company is completing its platform for day cabs used for pups, 53’ dry vans and steel shipping containers.