a/c is 15.5k btu???

Try it first. Not all AC are created equal and sometimes 15k takes lower starting current than 12k.
Campers do have huge heat exchange and if you park in no shade 120F spot, you really need that big output.
Look at those Prevost conversion. Those buses do have good insulation, yet 5 AC units on the roof and 20kW generators.

bzgenius wrote:
Was trying to look at my a/c unit to figure out what generator to get and it is a dometic quick cool with no other info on the unit anywhere not even in the electrical box on the roof. The compressor is RKC5515EXA which is a 15.5k btu compressor unit. Why in the world would they put one that big on a little tc. Now I am faced with buying a big generator or buy a smaller a/c unit and that a little 2000 watt gen will run.

That's a TECUMSEH Rotary AC compressor, you'll need a 3000 watt generator to start up that AC unit. The problem is the start up amps that is needed for that unit, the RLA is 13 amps plus the fan motor, the require starting amp will be at least 20-22 amps minimum. Your AC unit is commonly known as a 1 ton system. Here's aLINK to the spec sheet for that compressor. You may want to look into this device, I can't tell you one way or the other if it really works...Micro-Air

My suggestion is a new small A/C (9000-1200 btu) about $700 and Honda 2000 about $1000. That would be a total of $1700, about the cost of a big generator.

That will give you both new units with a more efficient A/C and much lighter weight generator. You typically will get 8 to 10 hours run time with one tank (1 gal) of gas. The bigger generator will require more fuel.

Wayne

Take a look at the Micro-Air easy start device. They claim that you can start and run a 15k AC with a Honda 2000i generator.

I'd go with a smaller a/c unit. Bigger isn't always better when it comes to air conditioners. If you live in a part of the country that deals with humidity, they often cool the camper too quickly. As a result, they dont run long enough to dehumidify the air.

I have ordered the micro easy start and will try to get the yamaha 2400 in the next week and hope it works. Seems to be good reviews with using the 2000 so hoping that the $200 more on the bigger generator will make it a sure thing. Will let you know when I get it done and hopefully the good news!!!

bzgenius wrote:
I have ordered the micro easy start and will try to get the yamaha 2400 in the next week and hope it works. Seems to be good reviews with using the 2000 so hoping that the $200 more on the bigger generator will make it a sure thing. Will let you know when I get it done and hopefully the good news!!!

Make sure you follow the wiring instruction carefully and please do let us know the results.

Greg B wrote:
I'd go with a smaller a/c unit. Bigger isn't always better when it comes to air conditioners. If you live in a part of the country that deals with humidity, they often cool the camper too quickly. As a result, they dont run long enough to dehumidify the air.

Since in CA I did camp in the mountains, under the shade, this is first real test for my camper AC.
I am in Phoenix now, with triple digit temperatures.
Come to the park at 1 PM, hook up the power as 1st priority, started my 12.5K AC and 3 hr later still have 86F on the counter-top.
Much hotter in camper pockets and close to the wall.
Camper park under the tree, so only partly exposed to the sun.
I guess the AC will make me comfortable about 9 PM.

I definitely agree with the above.

A smaller AC may not be the answer. I had mine blowing at max in humid and hot temperatures, and it took a while to cool it, even at 13.5k BTU.

The easy start came in today but the generator did not so it looks like Monday or Tuesday to try it out.