The Honda EU series is the best unit made for what it does, but there are others , even a 5500 watt EU is available so 2 is not necessary. EU series are so quiet you can`t hear them from 10-30ft, are load dependant rpm and produce equal to grid sign wave=clean power for computers. Yes they cost 3-5 times that of other units. Load dependant rpm means at say
300 watts the motor may only turn 800 rpm vs 3600 , at that rpm the EU can last 12000 hrs where as 3600 rpm cheaper units can last as little as
300 hrs for a cheap unit to 3000 hrs.
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has an extensive supply Yamaha also has a Inverter style like Honda EU, give them a call.
You give no details on what you need in watt draw, and yes you need to measure it, do your own complete energy audit, a Kill-A- Watt meter is indespensible for this and only apx 25$. Figure in Surge load it will be
3-6 time run load depending on type of equipment to be powered. Honda has a good worksheet for sizing
You give few details of what you realy need but 2 units, no , one proper unit and a transfer swith would be better. you may be fine with a
3600rpm generac 5500 for apx 600$ and often Lowes throws in a 300$ complete transfer kit FREE. A Honda 500 watt EU may cost 2000-??. The basic Generac is Loud, unregulated V. from 130-100V 58-62Hz, The EXL line have a 4V-6v swing and are good for 2-3000 hrs for 1/4 the price but they are Extremly Loud, Be sure to check DB ratings, Honda has a good DB worksheet, remember 3 db = doubling of sound level. I have a Generec 7500EXL, good but to big an Too Loud.
You need to give real details of what you will power. Power ratings imprinted, and dates manufactured- apx.
I would consider a dual fuel or Tri Power conversion for a Honda- Yamaha or Generac. That way you can have a permanent gas line outside and just use a quick Snap connect on hose, or a propane tank
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is a good place to call.
Anything with sensitive electronics can be ruined by an unregulated gen, some refrigerators-furnces, washers, and all computers, Tvs, stereos, microwaves-etc. You need to monitor and Know Output, always. A separate transfer panel is a must with an amp meter, and a sepatare V meter upatairs is a good idea, units often come uncalabrated, its your job, your power.