I have a 250CR with the same appliances as stated above including AC/Heat. We use a Honda EU 2000 watt generater with no problem. We run refer, lights, tv, radio and battery charger at the same time. In the morning we can run the coffee pot and Microwave easily. It will also run our A/C buts runs out of gas during the night. It weighs 34 pounds, is very quiet and cost about $1000. Just be cautious of the wind and placement so you do not risk CO2 inhalation problems.