[IntegrityAir]

In researching the Honda EU2000 in parallel vs Honda and Yamaha 3000s, I eventually talked to Speedway sales in Milwaukee area. Riz, the owner, sells and is very informed on both. His experience indicates the Honda, while not spec'ed as such, will maintain a higher output in the range of 3000+ watts, for 30 minutes, as opposed to 30 seconds for the boost feature of the Yamaha. He says it will handle heavy loads better overall. However, two EU2000's in parallel will provide 4000 watts startup. As for brand, from my personal experience with generators, including Generac, Onan, and Honda, I've found the Honda to be the most trouble free and easiest to maintain of any out there. I still have a 2500 unit, which saw extensive service for my daughter in the Grand Forks great flood of the Red River last decade. Still works flawlessly.

Personally, after much research into this area, I've decided on two EU2000's paralleled together as opposed to the EU3000. The primary consideration was weight, but there turns out to be other advantages. With the EU3000, at 134# minimum, I would have to use a ramp or lift to handle it as I travel mostly alone. The EU2000’s weighs in at only 46# each. Also, in parallel, the 2-2000’s will provide greater max [and startup] capacity, 4000 watts vs 3000. From a fuel consumption standpoint, with an 13,500 BTU A/C load, which is my primary concern, both the 3000 and 2-2000's will run close to the same amount of time, and the 2-2000's will use less fuel. Here's the calculation:

EU3000: Fuel tank = 3.4 gal. Runtime = 7.2 hr at full load, 20 hr 1/4 load.
This equals about 1/3 gal per hour full load and 1/6 gal at 1/4 load.

EU2000: Fuel tank = 1.1 gal. Runtime = 4 hr at full load, 15 hr at 1/4 load.
This equals about 1/4 gal per hour full load and 1/14 gal at 1/4 load. Since there will be two units in parallel, the should be doubled, but then multiplied by 3/4 since the parallel units output 4000 watts vs the 3000's 3000 watts.

If you assume a load of 2400 watts for an A/C unit after startup running continuously, this is about a 3/4 load for the EU3000 and a 6/10 load for the 2-2000's. Assuming the fuel consumption curve is linear for both setups from 1/4 load to full load [which it probably isn't but will be close enough for our calculation], the EU3000 would consume about .3 gal/hr with a runtime of about 11.5 hours, and the 2-2000's would consume about 1/6 gal/hr for a run time of about 9.2 hr. While the 2-2000's will have a slightly shorter runtime, their fuel efficiency is substantially greater, since their combined fuel supply is 2.2 gal vs 3.4 for the EU3000. Overall, at this load calculation, the 2-2000's are attaining 4.2 hr/gal vs the 3000 at 3.4 hr/gal.

There are of course other factors to consider, although cost won't be one of them, since net cost will be about the same. These other factors include: the security of the heavier unit from a theft standpoint, the greater start capacity of the paralleled units, now 4000 watts total, the electric start vs manual start, etc. But for this old[er] body, the ability to manage the individual weight of each EU2000 far overrides these other differences.