Whenever the topic of trying to power a 13.5k BTU a/c with a generator comes up, it seems the discussion/solution usually assumes the air conditioner is a static, unchangeable part of the equation.
FWIW, a Honda EU2000i produces enough continuous current to "run" nearly every 13.5k BTU a/c (10-14a). As has been discussed numerous times, it's typically the excessive startup compressor (inrush) current that's the deal breaker for the EU2000i.
LRA (compressor inrush current) for an OEM 13.5k BTU a/c is typically 58-63a. Since a Honda EU2000i can only reliably and consistently produce 50a (Eco mode on) and 54a (Eco mode off) of inrush current, it's easy to see why it has problems starting many of these OEM units.
There is a 13.5k BTU a/c unit with an LRA as low as 48-50a and a continuous current rating of 10-11a (Coleman Mach 3 PS 9xx series, NOT the older 8xx series). I've seen one (1) Honda EU2000i run one of these Coleman units with the Eco mode on (yes, on) in a 105+ degree desert environment for 48 hours straight. Not saying this combination can be guaranteed to work in every situation, but it is a potential option that some may want to consider. I've seen these Coleman Mach 3 PS 9xx series roof (only) units on sale for as low as $499. Typically they cost ~$700.
In any case, a bit cheaper than $900-$1000 for a 2nd EU2000i. Plus, consider 1) the fuel savings, and 2) the much lower sound level of running one EU2000i vs. two.
