In the context of rising electricity prices, finding solutions is crucial. save energy For businesses, air conditioning and ventilation (HVAC) systems have become a top priority. One of the key but often overlooked factors is... ductwork design.
Installing the shortest possible ductwork with minimal bends not only reduces material costs but also allows the fans to run more smoothly, extending their lifespan.

Why does the route of air ducts affect electricity bills?
Each meter of ductwork and each bend (or elbow) creates resistance to airflow, known as air resistance. pressure loss.
- Pipe wall friction: The longer the tube, the more energy the air needs to move.
- Resistance at the quail: When the airflow changes direction abruptly at points of contraction, the pressure will drop significantly.
To compensate for this loss of pressure, the ventilation fans have to operate at a higher power. As a result, electricity consumption skyrockets and the system produces a lot of noise.
Expert tips for designing energy-efficient air ducts.
1. The principle "Straight lines are the number one priority"“
Design the ductwork path to be as short as possible from the supply source to the air vents. Reducing duct length means reducing friction surface area, allowing for faster and stronger airflow without increasing fan speed.
2. Minimize the number of sharp turns.
90-degree turns0 It is the "enemy" of pressure. If you must divert, then:
- Use 45-degree angled segments.0 instead of 900 to allow the airflow to move more smoothly.
- Use elbows with a large radius of curvature.R big).
- Install additional flow guide Inside the elbows are the components used to direct airflow and reduce turbulence.
3. Choose the appropriate duct size.
An excessively small duct cross-section will increase wind velocity too much, leading to pressure loss according to the velocity-squared formula. Accurately calculating duct dimensions helps balance investment costs and long-term operational efficiency.
Benefits of optimizing duct routing
Adherence to scientific design principles offers dual value to investors:
| Benefit | Detail |
| Reduce electricity bills. | The fan operates at its highest efficiency, consuming less electricity. |
| Noise reduction | Minimal air turbulence contributes to smooth and professional system operation. |
| Equipment durability | The fan motor is not overloaded, reducing maintenance and repair costs. |
| Cooling performance | The airflow to the rooms is stable and as designed. |
A reputable manufacturer and installation consultant for air ducts.

In Sao Viet Air Duct, We not only provide high-quality ducting products (spiral ducting, square ducting) but also assist customers in consulting on the most optimal design solutions.
With our team of experienced engineers, we are committed to providing piping systems that:
- High degree of airtightness (Reduce gas leakage).
- The inner surface is smooth. (reduces friction).
- Smart accessory system (Reduce pressure loss).
Contact us now for consultation and the best price quote for your project!
- Hotline: 0815.999.826 / 0934.559.168 / 0949. 852.886
- Email: vietonggio@gmail.com
- Address: 267 Le Thanh Tong, May Chai, Hai Phong



