Powering Industries for 50+ Years
A Guide To Industrial Noise Control
Generator Sales, Service, & Rentals
Generator Too Loud?
An industrial generator is a powerful asset, a cornerstone of operational continuity and emergency preparedness. But that power, born from a high-horsepower internal combustion engine, comes with a significant and often disruptive byproduct: noise. For facilities located near residential areas, commercial properties, or for those simply striving to maintain a safe and productive working environment, excessive generator noise is a serious challenge that demands a professional, engineered solution. This guide provides a comprehensive tour of the sources of generator noise and the most effective methods to control them.
Identifying the Sources of Noise
Engine Noise
The heart of the rumble. This is the mechanical sound from the engine’s combustion process, moving parts, and the vibration of the engine block itself.
Colling Fan Noise
The roar of air. A massive, high-velocity fan creates a powerful “whooshing” sound as it pulls air across the radiator to cool the engine.
Exhaust Fan
The loudest source. The high-pressure release of exhaust gases creates a sharp, low-frequency noise that can travel long distances.
Solution 1: The Exhaust Silencer
For any noise reduction project, the first and most effective component to consider is an industrial-grade generator exhaust silencer (or muffler). This is the single most impactful component for reducing the overall sound level.
| Grade | dBA Rating | Use |
|---|---|---|
| Industrial | 15-20 dBA Reduction | For remote locations where noise is less of a concern. |
| Residential | 20-25 dBA Reduction | Suitable for less sensitive commercial or light industrial areas. |
| Critical | 25-35 dBA Reduction | For installations near residential neighborhoods and offices. |
| Hospital & Super Critical | 35-50+ dBA Reduction | The highest level of attenuation for the most noise-sensitive environments like hospitals and schools. |
Solution 2: The Sound-Attenuated Enclosure
When an exhaust silencer isn’t enough, a sound-attenuated enclosure provides a complete solution. These are not simple weather sheds; they are custom-engineered acoustic structures designed to tackle all sources of noise at once.
Acoustic Insulation
Lined with thick, fire-retardant mineral wool or specialized foam to absorb engine and fan noise.
Baffled Airflow
Creates a winding path for cooling air, allowing the fan to work while trapping noise inside the enclosure.
Vibration Isolation
A truly comprehensive noise control plan must also address structural noise. The goal is to prevent the mechanical vibration of the generator from transmitting into the building’s foundation. This is achieved by mounting the generator on specialized heavy-duty springs or high-density rubber pads and using flexible connectors for all lines.
Meet the Code and Be a Good Neighbor
Effectively managing your generator’s noise level is about compliance, safety, and community. By implementing the right noise control solutions, you can ensure your critical power system operates without becoming a public nuisance.
Still have questions or looking for more information?
Generator Source specializes in low-hour, used, new, and surplus generator sets. We have a wide variety of generator sizes and models to fit any project. We are not a broker, we own what we sell. Call us today (877-866-6895) or click Contact Us to be connected with one of our experienced sales reps. We have 350+ generators in stock and ready to ship!
