My elderly parents have a Generac (12 kW, I think), fueled by natural gas,
for emergency backup. Weekly self-tests and occasional real use are
upsetting to them due to the high noise level. Re-siting is not an option,
and simple baffling with boards leaned against the metal case doesn't make
Store and installer were no help. Does anyone know if it's practical to add
a much bigger muffler to these units? Aside from warranty issues, are there
any concerns for safety, damage to engine, etc?
Thanks in advance-
Generally little of the noise you hear is from the exhaust. A good portion
of the noise is mechanical noise from the engine and generator itself. Other
than moving it farther away, which you have said is out of the question,
they will probably have to live with it. I would advise not changing the
exhaust, or insulting the cabinet. Allot of thought has gone into air flow
for engine cooling, and alterations may cause expensive problems.
That said I work for a Generac dealer. If you are talking about the new,
(less than a year or so), 12K I am surprised! We regularly set them right
near the home and have had no complaints of objectionable noise. Sure, you
can hear them in the home, but they are about as loud as a lawn mower.
Any questions, feel free to ask!
Try lining the room its in with some closed cell vinyl foam. It has
great sound barrier properties. There is good information on this web
site about soundproofing generators.
Super Soundproofing Co.
757 N. Twin Oaks Valley Rd.
San Marcos, CA 92069
Technical Assistance 1-760-752-3030 Order Desk 1-888-942-7723
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