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Old 02-08-2014, 12:09 AM   #1
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Generator recommendation

Can anyone recommend any good, so so quiet, not so heavy generator that can run our Coleman 13500 a/c? I know Honda would be best but dont want to spend 2k.
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Old 02-08-2014, 12:23 AM   #2
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Yamaha 2400ISHC
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Old 02-08-2014, 05:57 AM   #3
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I agree w/ clubhouse. However, the EU3000is WILL be the MOST quiet generator you're going to find. If running your A/C is going to be a primary use for this generator I would still consider it. The Honda is appreciably quieter at max load, however keep in mind that the Yamaha will be running at CLOSE to max to keep that A/C spooled up and running (thus running at closer to max dB). The Honda will be running at MAYBE 2/3, thus coming that much farther under its already impressive max dB level.

I had a Yammy 2400ISHC paid for and on the loading dock to be delivered to me by Wise Sales before I changed my mind and went with the Honda. Primarily for noise reasons, though the punch in the wallet was not kind.

Also, people will tend to tell you to go the 2x Honda 2000 or 2x Yamaha 2000 route for those time that you don't need the A/C. The logic being that when you don't need the A/C one of those little guys will be all that you need. All true. However when you DO need both of those little guys running for the A/C the noise can still be a issue if you're looking for quiet. dB effect stacks: http://www.engineeringtoolbox.com/ad...ibel-d_63.html. 2 of those little guys running at ~54 dB combines for a effect of 60 dB !!! Higher than the solo EU3000is.

In short if you want a genny that can run your A/C and you are price sensitive and don't mind the background noise you can't really go wrong w/ the Yamaha. If however you are noise averse, the closest you're going to get to 'quiet' is the Honda.
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Old 02-08-2014, 07:14 AM   #4
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We have a 3100 watt Champion Inverter generator and have been happy with it. It was less than a K , we don't use it a lot but it has performed every time.
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Old 02-08-2014, 09:12 AM   #5
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Altitude will also factor in to the gens ability to produce enough amps to start the compressor up.. My 3000's breaker would trip sometimes. I added an additional " hard start capacitor" to the A / C unit to reduce the initial load demand at start up ( very easy, pretty inexpensive.... Search internet for parts )

So depending on where you are, or plan to go, the genset may or may not produce enough.

You can also find high altitude jets for the carburetor that will help the engine run at higher rpm to offset bog down on the engine. Pain to keep switching them back and forth if you travel a lot.
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Old 02-08-2014, 04:55 PM   #6
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[QUOTE=Jmooney;173857 My 3000's breaker would trip sometimes. I added an additional " hard start capacitor" to the A / C unit to reduce the initial load demand at start up ( very easy, pretty inexpensive.... Search internet for parts )QUOTE]

Jmooney, we also use the Yamaha 3000, I'm interested in your fix. Can you expand on the installation of a "hard start capacitor"? What exactly is that and where do you install it? Did you happen to take pics? Thank you
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Old 02-08-2014, 07:49 PM   #7
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Dometic smartstart

"The SmartStart is a unique device that smoothes out startup power demand instead of spiking it, reducing amp requirements by up to 65%. The technology uses dynamic feedback control to reduce the inrush of current by starting the compressor motor slowly. No other soft starter in the industry provides better performance"


That said , There are less sexy devices out there called " hard start capacitors" , that simply connect in parallel with the wiring feeding the compressor up on the roof under the A/c unit cover. The capacitor charges up ahead of time and provides the extra power needed at the moment of spike. Search internet and you will find lots of examples.

Your 3000 watt generator, produces approx 25 amps at PEAK demand. ( ohms law: 3000/120=25) The motor on your generator will be running at full speed at that point to produce that much power, and in many cases can't get up to speed fast enough to provide that much power that suddenly ( the spike )

If you are already pulling 10 amps for your inverter and other goodies, the suddenly 15-20 amp demand of the compressor simply exceeds the generator heads capacity

Check out the paperwork for your A/C unit to see how much power it needs to start and how much to simply run once started

Hope that helps

PS. The dometic smartstart will cost you $300. You can find hard start capacitors for $50
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Old 02-08-2014, 08:28 PM   #8
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Thank you Jmooney! I'll research those options.
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Old 02-08-2014, 09:33 PM   #9
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Any problems with running 4 110 amp hour batteries? Does your charger handle all of that, or do you charge separately?
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Old 02-08-2014, 09:33 PM   #10
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$50 bucks for a hard start capacitor? You can by 4 of them for that price !!!

http://www.ebay.com/itm/171115019001...84.m1436.l2649

This is the one for 13.5 A/C units. Not sure what capacitor (or if any change is needed at all) for the larger 15k units.
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