question about parallel generators

Have you considered a soft start unit for the AC?

Without kknowing how many amps your a/c draws we can't answer your question. However, 30A at 120V equals 3600 watts so you are short 1300. I have never seen a small 1800 rpm generator, it must be a heavy little beast.

Is it an inverter generator? If yes, the size of the two doesn't matter, what ever size gets you to approx 3600 running watts (depending the size of the AC). If it's not an inverter generator, you can't parallel it.

Unless that 1800 is an inverter generator don't even dream about paralleling it to any other generator. I repaired generators to one megawatt (1,000,000 watts) and even they need to meet certain criteria for synchronous operation. If it's an 1800 watt inverter generator that's another path especially if it has a paralleling connector port.

The big boys is where I learned to love Woodward governors and Delco H9000 voltage regulators. Minimize alpha-beta tendencies.

Some 2300 watt generators CAN run some air conditioners in some conditions.
Hitting the very minimum size will be impossible except to say 4000 watts should run your air in virtually all conditions.
Also consider you may just need a start capacitor or an improved electronic start capacitor such as Micro-Air.
Another solution might be to add an inverter that combines power with the generator to handle the start surge.

"Running speed" is assumed to mean "continuous watts". So the 2300w gen does 1800w.

In ads for paralleling, they say it will double the output, but this is false. Two of those will not do 2 x 1800 = 3600. However, two of those might still be enough to run your air conditioner. Needs more info on the A/C's draw.

EG, a B&S "P2200" gen is rated at 1700w continuous. Paralleling those gets you maximum output of:

two P2200s = 3000 watts (not twice 1700 notice!)
one P2200 and one P3000= 3000w (which is more than the 3000's cont.)
two P3000s = 4800 watts

So you see how that works. It has much to do with the actual ratings of the receptacles on the "parallel kit". Each generator brand has its own versions of those and they vary.

In the table above, you see that the 2200 and 3000 combo is limited to 3000 same as for two 2200s. This is because you have to use the parallel kit that has the connections that fit the smaller gen parallel plug-ins. Same with odd size combos of other brands like Champion.

I am sorry yes my Generator is a inverter type.

scottsnider wrote:
I am sorry yes my Generator is a inverter type.

generally you want to buy the same brand and size, so they share the load equally

scottsnider wrote:
I am sorry yes my Generator is a inverter type.

It would help if you posted make and model since i don't know of any 2300w inverter generator. 2200w yes.
Also not all inverter generators can be paralleled.

Basically you need a second 2000w generator.