You’d need to rig up a support system like PVC tubing or tent poles to hold them in place. They are 3/4″ thick closed cell foam, 32″ x 54″. YouTube® has many videos on this subject. Put on your “clever” hat and design a baffle box that works. Most of the premade baffle boxes are designed for home use and not easily transportable. Build or Buy a Sound Inhibiting Baffle Box Click on image to see the YouTube® video about it. When the owner leaned the pieces of wood against the generator the db meter, shown in the foreground, actually dropped by 10 db.Īdmittedly a “red-neck” method of quieting your generator this lowers the volume a whopping 10 db. The photo on the right shows the simple sound deflectors laying on the ground around the generator. The one shown here is for Champion generators. Each manufacturer has their own extension adapter. One easy muffler is to buy a tubing exhaust extension and stick the end in a bucket of water. Some generator manufactures make large mufflers as an add-on. The tests revealed about a 5 db reduction with the better muffler. Some folks have welded on automobile mufflers ( see that in this YouTube® video) and it did help some. An exhaust pipe extension, like the one shown on the left, will be helpful for an RV’s built-in gennny by moving the fumes, heat, and some noise up over the roof of the RV where it can easily dissipate. Most of the noise comes directly from the moving parts rather than the exhaust pipe. Mufflers may help a little but not as much as you’d think. There are several types of sound attenuation systems. Sound Attenuation Systems to quiet down your generatorīlocking the sound from getting to your ears is the main objective. Some of these claiming to be light weight still tip the scales at over 100 lbs.ģ. Take your genny out of your truck bed so it doesn’t reverberate the entire vehicle (if you can lift it). They don’t want to hear your generator either. If you are in a campground be mindful of your neighbors. Make sure the exhaust is pointed away from you. Use a very heavy duty extension cord and move the generator 25 feet or more away from your structure. The more power they produce the louder they run. See the chart on this page to determine how big of a generator you will need. Using these two generators at the same time only raised the noise level 3 db or a 25% increase. Many of the small inverter generators, like the Honda’s shown above, come with a parallel connecting cable to use two of them together if you need more power. But what about the bigger powerhouses? Buy only the size of generator that you will need. This is fine for the smaller “Inverter” type generators. They do this by using a unique alternator that makes less noise and enclosing the whole package in a sound absorbent plastic case. Honda has a reputation for being the quietest generator out there but Generac claims to be 40% quieter than the Honda. You may need to dig into the generators specification to find this information as most manufactures would rather not tell you how loud their generator is.Ĥ0% Quieter than Honda* Advanced inverter technology and enclosure design provide optimal quiet performance (* Over 5 dB(A) quieter than the EU3000is. Generator manufactures typically take their measurement from 23′ away from the generator running at 1/4 load. Using a noise level meter the volume is measured in decibels or db. How noise from portable generators is measured Inverter/Generators are great because they produce clean, stable 100 volt, 60 Hz. These are generally modest power generators and fairly expensive because much engineering has gone into noise abatement construction. Some of the new inverter/generators are remarkably quiet. They are less expensive because little effort has been made to make them quiet. These are fine when used in conjunction with an off-grid solar system because they charge the batteries and the “inverter” is a separate piece on the system. These generators can produce enough power to run an entire household of appliances and/or power tools. You may have seen the “open-frame” type being used on a job site or for off-grid power. There are several types of portable generators. But the 30-year old built-in Onan generator emits 70db right under my keister. My coffee maker and microwave oven need the generator and my battery needs to be recharged after a long night running the heater fan. I cringe thinking about my camp neighbors when I make breakfast. I’d probably run my generator a bit more if it wasn’t so loud.
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