I made the big mistake of not ordering a third 15k air conditioning unit on our RV as an option when we ordered it. We were brand new to RVing and didn't know better. We have slide toppers which help. Presently we are in AZ and looking at temps of up to 110 daily. Both of our 15k air conditioners never shut off all day now and the best we can get the temp to is mid eighty's inside the rig. It still beats being outside. I was thinking of purchasing a window unit that I could put in my back window, as we are staying in this park for the summer months. If not for medical reasons right now there is no way I would be staying in the AZ climate right now.
By any chance do you have one of the RVing Travel Assist insurance plans like Good Sam ( https://www.goodsamtravelassist.com/ ) or FMCA (https://www.fmca.com/index.php/fmca-assist.html ) offer? They do require that you (or your co-insured) be a hospital inpatient for a few days, but then they get you and your loved one back to your home of record medical facilities, drive your rig home, care for pets, and more.