15k BTU on 2200 watt generator

3 tons wrote:
FWIW, after about 30 min warm-up run time period, my Coleman P.S. Mach 1 11k btu air cond uses about 2 amps more (across the board) than Coleman specs claim...

jjrbus wrote:
The specs given in the brochures are under ideal or laboratory conditions, I show the Mach 1 PS LRA at 45.6. I know for sure my Honda 2000 will not start and run my 11k roof air with a hard start capacitor when the temperatures start getting up towards the 90's.

The Honda 2000 will start and run an 8k btu AC under all conditions!

To piggyback on my last post, I believe it's also a given that there is no definitive way to determine beforehand, whether a given generator is going to power a given RV a/c unit. There are just too many operational variables (temp, humidity, elevation, gen/ac condition, etc.). Yes, the specs RV a/c manufacturers provide for their products are derived under controlled conditions. Much the same as the HP and torque ratings for trucks and cars are also derived under controlled conditions. Although these specs may not be accurate in determining a specific, realworld outcome, these specs are still very useful in making relative comparisons between similar products---increasing the odds that one can purchase the best product for the job.