The duotherm a/c unit on our camper is a 57915.522. what size generator do I need to run it. I have a Honda generator 3000 SI. Will this be big enough?

SOURCE: what size generator, watts, doe's it take to start AC unit 57915.531 ?

a 10000 due to the startup surge. also need start kits on any ac started by a generator.

SOURCE: Air not cold enough

they are sealed but you can get a sadle valve for it

SOURCE: No cold air. Unit runs fine.

yes if it has service ports but if it lee=aked out you need to fix leak first

SOURCE: No cold air. Unit runs fine.

There are a variety of probable causes of your AC's failure to blow cool air. Unfortunately, it is difficult to diagnose your situation without being there. However, I have a great, handy diagnostic article that specifies the main problems so that you can definitely come to find the cause applicable to your AC's failure. I'm not too familiar with RV AC's and how they may differe a bit from house AC's, but your AC very well may need a recharge of refrigerant/Freon by a technician, but short of that, try this first:
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Home_Improvement_Zone_Cooling_Ventilation_Systems_Central_Air_Conditioning_Does_Not_Cool.htm
This should defintely help.
Good luck!
Brad

SOURCE: if i am in the process of buying a generator to

You need to find out the maxamps of the rooftops which is located on each unit, then you will need to find out if these are 1phase, 2phase or 3phase units.
That information is also located on the unit and usually is marked 1P or 2P or 3P. If its 3Phase you
would need to talk to a electrical contractor or the
manufactuer of the generator you wish to purchace.

More in for is needed on the phase of the unit and amps that it draws