One of the most common questions we get asked on our John F Hunt hire desk – how quiet are your generators?
Historically, traditional generators built for industrial use have been known for their loud operation, which in the past has led to disruption in residential areas or work environments.
Now, modern Super-Silent and Ultra-Quiet generators like the ones which make up the John F Hunt Power fleet, are setting the standard for reducing unnecessary noise pollution, but how quiet are they?
Understanding Silent Generators
Super-silent and ultra-quiet generators are specifically designed with noise-reducing technology. They achieve lower decibel (dB) levels through advanced engineering, including:
- Sound Absorbing Canopies: Generator canopies feature enhanced sound deadening material throughout, creating a soundproofed canopy, significantly reducing noise emissions.
- Mufflers and Exhaust Systems: Silencers to reduce engine noise.
- Vibration Absorption: Anti-vibration technology prevents noise from being transferred through the structure.
In many models, the entire design process revolves around noise minimisation. This includes optimised airflow systems that maintain cooling efficiency without creating excessive acoustic output, as well as careful consideration of how internal components are mounted and aligned to minimise rattle or vibration.
Silent generators are particularly popular in industries where both performance and environmental responsibility are priorities. For example, film productions often require near-total silence during recording, and event organisers need to ensure that power supply does not detract from the experience. In these contexts, even a small increase in noise levels can be disruptive, which is why ultra-quiet units are becoming increasingly popular.
How Are Noise Levels Measured?
Noise levels are measured in decibels (dB). The lower the dB number, the quieter the operating level – but how do John F Hunt Power’s generators compare to everyday noise?
- A typical conversation is around 60–65 dB
- A petrol lawn mower generally operates at around 90 dB
- A hairdryer or a busy restaurant creates around 70 dB
- John F Hunt Power’s Super-Silent and Ultra Quiet generators range from approx. 55–68 dB at a standard distance of 7 metres
To put this in perspective, our quietest generators operate at noise levels lower than your average conversation or restaurant environment. This makes them ideal for overnight use or for deployment in sound-sensitive locations.
Super-Silent vs Ultra-Quiet
Super-Silent generators are the perfect solution for many applications and are widely used in construction, infrastructure, and events.
However, for some applications in residential areas or where overnight running is required, our Ultra Quiet Denyo and Fusteq ranges allow us to reduce noise levels by around 10 decibels.
In recent years, these quiet generators have become the perfect solution, helping our clients eliminate noise pollution concerns.
Ultra-quiet models are a popular choice for hospitals, schools, and remote utility works where operations are ongoing but need to remain unobtrusive. In urban settings, councils and developers often specify noise limits in planning conditions, making the use of ultra-quiet technology essential.
Reducing Generator Noise Further
Even with a silent or ultra-quiet generator, you can take additional steps to reduce noise pollution further:
- Position: The simplest way to limit disruption from noise is to carefully consider the location of the generator, and where possible, siting away from living or working areas.
- Existing Sound Barriers: Where possible, you could place the generator behind existing walls or fences to create a barrier to the noise.
- Hire Acoustic Barriers: Where the above isn’t possible, we can provide additional acoustic barriers for hire which will further enhance noise reduction.
- Correct Sizing & Regular Maintenance: Ensure the generator is suitably sized for the application and is in peak condition by servicing regularly. This will help prevent unnecessary noise due to wear and tear.
Additionally, scheduling generator use during hours of lower occupancy or activity can further reduce impact, and remote monitoring technology can ensure prompt servicing when performance drops, which might otherwise increase noise.
Conclusion
John F Hunt Power’s Super-Silent or Ultra-Quiet generators offer enhanced noise reduction when compared to older traditional models.
With noise levels as low as 55 dB in some cases, they provide a practical solution for residential, outdoor, and event locations where quiet generators are a must.
These generators are not only a practical solution, they are a responsible one, supporting compliance with local noise ordinances and improving the overall user experience.
If you require or are looking to hire a silent generator for your project, contact John F Hunt Power on 01375 366 766 or get in touch via our contact page: https://www.johnfhuntpower.co.uk/contact
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