Will the Yamaha 2000 combo generators power 15K AC

Champion has a 3400 watt inverter generator that will fire up and run that A/C unit no problem. It is about $1000 to $1100. It is much heavier than a single red or blue 2000 generator. It is quieter than a pair of 2000 watt generators as well. Just something to think about.

I use to live in Tucson but now live in the Denver area. Two 2000i generators, wired together, will probably not work at an altitude above 5000'. So if you want to run a 15K BTU A/C up on the Mogollon Rim, or up in the White Mountains, they probably won't handle the load.

I used the paralleled Yamahas to successfully run the RV AC. They will NOT do it in ECO mode. The lag time to full runup is too great.

With that said , I had identical mechanical failures on 2 different Yamaha 2000 units and absolutely appalling service from their Warranty Repair Center. I went with the Honda 2000 units as replacement and will never own Yamaha again.

I have 2 2000w Yamahas and a 13.5 A/C with a hard start kit on my TT. No problem running the A/C at 2500' elevation at 90 degrees. Tried it on a friends MH with 15.0 BTU A/C and it struggled to start at 85 degrees. It was an older MH. Not sure if a hard start kit would have helped.

BobnKris wrote:
I'm considering purchasing the Yamaha 2000w combo generator set to use during an extended trip we have planned this year. I have a Coleman 15K AC on the trailer, and am curious if anybody uses the Yamaha combo to power a 15K AC and what limitations I should expect. I've had a Yamaha 2400 for several years, and it worked occasionally to power our 13.5K when at lower elevations, but need to have enough power to use the AC if needed for short(er) durations when not in an actual park with hookups. Any help is appreciated. I'm not opposed to the Honda setup, but I like that the Yamaha has the fuel shutoff whereas the Honda does not. From what I've read, the power output for either setup (Honda vs Yamaha) is similar, but insight or suggestions regarding one brand over another is also appreciated.

BobnKris wrote:
Sorry, to clarify: I mean the combo of 2 2000w Yamahas (4000w total). I know it works on paper, but I'm looking to see if anybody has practical experience using that gen setup with a 15K ac. Thanks for the help, and all replies are appreciated.

The BTU rating of an RV a/c unit only gives you a very general idea about the inrush current necessary to start it. The LRA rating is a much more definitive indicator. FWIW, some 15k BTU RV a/c units actually have an LRA lower than some 13,5k BTU RV a/c units. In other words, depending on the LRA rating of a given RV a/c unit, a generator may be able to start a 15k BTU a/c unit and not start a 13.5k BTU a/c unit.

What's the LRA on your 15k RV a/c unit? The LRA is noted on the data sticker typically located underneath the upper, outside shroud. If it's 65 amps or higher, chances are two, paralleled 2000 Yamaha's may struggle, or even fail, to start it---especially under less than ideal conditions. The Yamaha's produce enough continuous current to run nearly any RV a/c unit, but may not produce enough inrush current to reliably start an RV a/c with an LRA of 65 - 70 amps under all conditions.

Even two, paralleled Honda EU2000i's would have a tough time with LRA's as high as 65 - 70 amps.

Does your 15k BTU RV a/c have an OEM start capacitor already installed? If not, then you may want to consider installing one. A start capacitor can potentially reduce the LRA approx. 10 percent.

I can't find anyone on here who's posted about that. Provided the Yams have the surge capability of the Hondas, that should work fine on Eco throttle.

Sorry, to clarify: I mean the combo of 2 2000w Yamahas (4000w total). I know it works on paper, but I'm looking to see if anybody has practical experience using that gen setup with a 15K ac. Thanks for the help, and all replies are appreciated.

The Honda eu2000i has both a fuel petcock and the switch for the electronics both done by the same knob. Some people have split the functionality off, others have just closed the air vent on the gas cap, which kept the fuel from getting to the carb bowl.

Don't get me wrong; Yamahas are great generators, mine lasted for a long time and worked flawlessly. However parts are not easy to find, I wound up ordering from an online shop, paying more for shipping than the components themselves, and service... I've yet to find a place in central Texas which does anything but sell Yamaha generators.

Hondas, on the other hand, you can be almost anywhere, and you can find someone with the knowledge to fix the eu2000i models. Parts grow off of trees for them (relatively.)

I'd go with a pair of Honda twins and a pairing kit.

Dual Genset, yes!
Single Genny - NO!

I think by combo you mean two generators... 4K watts then yes. Only one no.