What is the noise level of a reefer trailer's refrigeration unit?
As a supplier of reefer trailers, I often encounter questions from customers regarding various aspects of our products. One topic that comes up quite frequently is the noise level of a reefer trailer's refrigeration unit. In this blog post, I'll delve into this topic, exploring what affects the noise level, typical noise levels, and why it matters.


Factors Affecting the Noise Level of a Reefer Trailer's Refrigeration Unit
The noise generated by a reefer trailer's refrigeration unit can be influenced by several factors. Firstly, the type of compressor used in the unit plays a significant role. Compressors are the heart of the refrigeration system, and different compressor designs produce varying levels of noise. For instance, reciprocating compressors, which operate by using pistons to compress refrigerant gas, tend to be noisier compared to scroll compressors. Scroll compressors have a more continuous and smooth operation, resulting in lower noise emissions.
The size and power of the refrigeration unit also impact the noise level. Larger units with higher cooling capacities generally require more powerful components, such as larger fans and compressors. These larger components can generate more noise as they work to maintain the desired temperature inside the trailer. Additionally, the age and condition of the refrigeration unit can affect noise levels. Over time, components may wear out, leading to increased vibration and noise. For example, a worn-out fan belt may cause a squealing noise, while loose or damaged mounting brackets can result in rattling sounds.
The environment in which the reefer trailer operates can also contribute to the perceived noise level. If the trailer is parked in an enclosed or confined space, such as a warehouse or a loading dock, the noise can be amplified due to the lack of sound dispersion. On the other hand, when the trailer is in an open area, the noise may dissipate more easily, making it seem less noticeable.
Typical Noise Levels of Reefer Trailer Refrigeration Units
The noise level of a reefer trailer's refrigeration unit is typically measured in decibels (dB). On average, a modern reefer trailer refrigeration unit can produce noise levels ranging from 60 to 80 dB when operating. To put this into perspective, normal conversation typically occurs at around 60 dB, while a vacuum cleaner operates at approximately 70 dB. A noise level of 80 dB is comparable to the sound of heavy traffic on a busy street.
However, it's important to note that these are just general estimates, and the actual noise level can vary depending on the factors mentioned earlier. Some advanced refrigeration units are designed to be quieter, with noise levels as low as 55 dB, while older or less efficient units may produce noise levels upwards of 90 dB.
Why the Noise Level of a Reefer Trailer's Refrigeration Unit Matters
The noise level of a reefer trailer's refrigeration unit is not just a matter of convenience; it can have several practical implications. For one, excessive noise can be a nuisance to those in the vicinity of the trailer, such as neighbors, employees at a loading dock, or residents near a storage facility. This can lead to complaints and potential legal issues, especially in areas with strict noise regulations.
In addition, high noise levels can also have an impact on the well - being of the driver. If the noise from the refrigeration unit is too loud, it can cause distraction and fatigue, increasing the risk of accidents on the road. Moreover, prolonged exposure to high noise levels can lead to hearing damage over time.
From a business perspective, a quieter refrigeration unit can enhance a company's reputation. Customers are more likely to choose a supplier that offers products with lower noise emissions, as it shows a commitment to environmental and social responsibility.
How to Reduce the Noise Level of a Reefer Trailer's Refrigeration Unit
There are several steps that can be taken to reduce the noise level of a reefer trailer's refrigeration unit. One option is to invest in a high - quality, modern refrigeration unit that is designed to be quieter. These units often incorporate advanced technologies, such as noise - reducing insulation and vibration - dampening materials, to minimize noise emissions.
Regular maintenance is also crucial for keeping the noise level in check. This includes checking and tightening all mounting brackets, replacing worn - out belts and bearings, and ensuring that the unit is properly lubricated. Additionally, installing sound - absorbing materials around the refrigeration unit can help to reduce the amount of noise that is transmitted to the surrounding environment.
Our Offerings
At our company, we understand the importance of noise reduction in reefer trailers. That's why we offer a range of high - quality refrigeration units that are designed to operate quietly. Our 5 ton 10 ton refrigerated truck and 4 Axle Refrigerated Semi Trailer models come equipped with advanced refrigeration systems that are engineered to minimize noise while providing efficient cooling performance.
If you're in the market for a reefer trailer and are concerned about noise levels, we encourage you to get in touch with us. Our team of experts can provide you with detailed information about our products and help you choose the right reefer trailer for your needs. Whether you're a small business owner looking for a reliable refrigerated truck or a large logistics company in need of a fleet of semi - trailers, we have the solutions to meet your requirements.
In conclusion, the noise level of a reefer trailer's refrigeration unit is an important consideration that can impact both the user experience and the surrounding environment. By understanding the factors that affect noise levels and taking appropriate measures to reduce them, you can ensure that your reefer trailer operates quietly and efficiently. If you have any questions or would like to discuss your reefer trailer needs, please don't hesitate to contact us. We look forward to working with you.
References
- ASHRAE Handbook - Refrigeration. American Society of Heating, Refrigerating and Air - Conditioning Engineers.
- Noise Control Engineering Principles and Applications. Cyril M. Harris.




