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Old 06-07-2015, 12:28 PM   #1
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Generator size needed

What size generator is needed for a 15000 btu a/c in an evo t2550
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Old 06-07-2015, 12:32 PM   #2
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Most go with 2 of the honda 2000's and hook them together but others will chime in on some ideas
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Old 06-07-2015, 12:50 PM   #3
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I'm a little younger so the weight issue isn't a consideration. I have a Kipor 3500 which is rated at 2800 watts but will supply 3000 watts for a short period. It weighs about 140# with gas. It will run a 15K A/C and a few other small items. It will not run the A/C and water heater or the A/C and microwave together. Stay away from the cheap open frame contractor generators as you'll not make any friends in a campground with it howling away.
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Old 06-07-2015, 01:28 PM   #4
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Minimum would be 3000w inverter generator.
I echo diesel guy's statement about cheap open frame contractor generators.
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Old 06-07-2015, 01:37 PM   #5
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A pair of 2000 watt Hondas or a pair of 2000 watt Yamahas hooked together works well because they are lightweight and supply enough power for a 15,000 BTU A/C. Whenever you don’t need the A/C, then one will run things very economically. However, their run-times are rather short under full load. The Honda has a fuel pump so a practical extended run-time modification is easy and some have luck with the Yamaha extended run-time as modifications as well. The Yamaha doesn’t have a fuel pump so its setup is a little fussier. Neither has an electric start but they pull-start easily.

Engine generators can’t supply as much power at altitude as they can at sea level. Both Honda and Yamaha say their regular 3000 watt inverter generators (EU3000is and EF3000iSE) will run a 13,500 BTU A/C but they don’t claim to run a 15,000 BTU A/C unit. If your E/G size is marginal then you might have problems at higher altitudes or on A/C restart after a short period off. The Yamaha EF3000iSEB generator, at 136 pounds dry weight, uses its starting battery to supply extra “boost” for starting A/C units with up to 3500 short-term watts of power and will supply an A/C with many hours of power on a single tank of fuel.

There are very few complaints about the Honda or Yamaha generators but several members have voiced success with other brands.

Good luck with your research.
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Old 06-07-2015, 07:15 PM   #6
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I have a Powerhouse 4000 watt fuel injected generator. Works great all in one box and runs 10 hours at 75% load. This will run the 15 k ac and most other small loads like a Tassimo coffee maker, TV s etc
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Old 06-08-2015, 09:26 PM   #7
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Better question is where will you be camping and will you need ac. We head for cooler areas when the temps get hot so never really need the ac
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Old 06-12-2015, 12:07 AM   #8
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The Loloho Show has new video on choosing a generator. Well worth the watch.

https://youtu.be/VqReiF8i7h4
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Old 08-08-2015, 08:52 PM   #9
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Ended up buying a powerhouse 4000, it run the 15000 ac, tv, lights and microwave. Very impressed with this unit.
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Old 08-08-2015, 08:57 PM   #10
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Good choice. Same reason I bought it. If I need it I want it to work!
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