Can I modify my inverter generator for reduced sound?

Assessing the Current Noise Level

Assess the current sound level of your generator by using a sound level meter. Measure the noise level in decibels (dB) at a distance of 3 feet from the generator. Typical inverter generators can produce noise levels between 60-80 dB(A), which may be too loud for residential areas. If the noise level exceeds 70 dB(A), consider modifying the generator to reduce the noise level.

Modifying the Muffler and Exhaust System

Upgrading the muffler and exhaust system can significantly reduce the noise level of your inverter generator. Consider replacing the existing muffler with a high-performance muffler that can reduce noise levels by up to 20 dB(A). Additionally, you can install a sound-absorbing material, such as a decoupler or a silencer, between the muffler and the exhaust system to further reduce the noise level. For example, the Champion 100111 100-watt inverter generator’s noise level can be reduced from 58 dB(A) to 45 dB(A) with a high-performance muffler upgrade.

Building a Noise-Reducing Enclosure

Another effective way to reduce the noise level of your inverter generator is to build a noise-reducing enclosure. A well-designed enclosure can reduce the noise level by up to 30 dB(A). To build a noise-reducing enclosure, you will need to use sound-absorbing materials, such as acoustic foam or fiberglass, to line the interior of the enclosure. You will also need to seal all gaps and holes in the enclosure to prevent sound from escaping. Consider using a pre-fabricated enclosure or a DIY kit specifically designed for inverter generators. For example, the Generac 7117 iQ2000 inverter generator’s noise level can be reduced from 59 dB(A) to 37 dB(A) with a custom-built noise-reducing enclosure.