Coach Too Hot

[Coach Too Hot]

I have a 2011 430qs motorhome, Charleston by Forest River, we have (2) 15,000-BTU Dometic Duo-therms that can't cool the coach when the o.a. is over 90*F.

Both units run on full power but can't make more than a 5*f. difference from o.a.

Is my only option to add another roof-top unit?

[Air Conditioners Won't Keep Up]

Wow! Maybe you should try closing the doors and windows!!

Are you getting good air flow through all of the vents? Do you have the option to open a grill directly under the A/C and blast all the air directly by-passing the vents? Have you removed and cleaned the filters? Is the air that is blowing cold? Are the compressors (not just the fans) running and never cutting out? Is there hot air blowing from the A/C up on the roof? Anything else you have checked?

Thanks for the humor Bill, but seriously these are (2) 15000 btu dometic duo-therms, I have checked everything you mentioned. Is there something wrong with my coach or do I need to add another roof-top?

[Air Conditioners Won't Keep Up]

we have a 430qs charleston by forest river that cannot keep the coach cool with both 15,000 btu units running on high when the weather is between 80. and 95. f any thoughts would be appreciated.