We have the 13,500 installed in the bedroom. We run it at night for two reasons. One to keep the bedroom cool and to provide white noise. If it is cool outside the A/C will only run on fan. The fan provides white noise to mask out the noises of people starting thier diesel, talking, construction equipment, highway noise, and trains.
Our penguin rv air conditioner has a heat strip and interior thermostat, therefore the fan runs continously. If you had an external thermostat the fan may cycle on and off with the compressor.
We have no problem with our A/C and yes it may cycle on and off frequently but it will drop the temp in the bedroom to about 63*. I am not sure what a 9k will do if you needed the cooling..
BC