1. On a Class C, the ONLY way you will get cold air IN THE CAB area is with the Dash AC
2. NO MOTORHOME DASH AC WILL COOL THE REST OF THE RV. IT WILL ONLY COOL THE FRONT CAB AREA AT THE DASH.
3. If you want the rest of the motorhome to be cool in transit you will have to run the Genset and roof AC systems
4. The Dash AC will pull anywhere from .5 to .7 gallon extra gas per hour to run the Dash AC compressor depending on the chassis
5. Depending on the Load a Genset will pull .7 to 1.1 gallons per hour of fuel. A Diesel Genset will use less than .5 gallon per hour. Doug
