I added the new ac they were offering, Randal said it would use less energy to operate and would be quieter. It operates with remote control which I think will be nice on a hot evening being able to shut the ac off from bed when the night air cools. The biggie was I added the extreme solar package. It was a difficult decision as it was very expensive. Energy is my biggest obstacle when off grid. With the bigger holding tanks on the host it will give us much more time to enjoy being off grid. I'm retired and excited about the journeys ahead in our new camper. Barry