Your comfort is our concern
A few things you can do to protect your winter home when leaving it in Arizona for the Summer
Rest assured -
Mailing Address: Pro RV & Air, Inc. 46387 E. Ironwood Lane Salome AZ 85348 (Please note: MOBILE WORKSHOP SERVICE ONLY)

Add some RV antifreeze to your fresh water holding tank and run the water pump by opening one faucet after the other to help prevent the rubber membrane on the pump and the seals in the faucets from drying out.
Pour RV antifreeze into all drains, filling the P-traps to keep them from drying out and letting sewer gases into the RV.
Pour some RV antifreeze into the toilet bowl to keep the blade seal moist.

Empty and flush the grey and black water tanks, close the gate valves and fill all holding tanks half-way with water, which prevents the gate valve seals from drying out.
Crumpled newspaper or charcoal briquettes on the inside will help reduce condensation and an opened box of baking soda will absorb smells.
A light film of Vaseline on the door gasket will help to keep it from cracking.
Disconnect the power supply cord and store it in its compartment. (Power surges can damage anything left on inside the RV, and the sun isn't your power cord's best friend.)
Disconnect the batteries, if they are not being checked and filled every month.
If your RV has slideouts, it is better to retract them if you can.
Reflective material on the inside of the windows (especially on the south-facing side) will help reduce heat and UV damage.
Open containers of water in every room help prevent glues and bonding agents in fabrication materials from drying out and delaminating. 5-gal. buckets or drinking water jugs are often used.
If you have a Maxx-Air vent cover, you can leave a vent slightly open to let some of the hot air escape. If you do not have Maxx-Air vent covers installed, make sure ALL vents are tightly closed. The winds in this area can work a vent open and tear it off, leaving the interior exposed.
Correctly inflate the tires of your RV and cover them to protect from UV damage. Best is to put jack stands under the axles to take some weight off the tires and prevent them from having "flat spots" in the carcass when you return.
Do not leave awnings extended.
Tie down or store away anything loose, including storage sheds, boxes, trailers etc.
If you have a trailer or 5th wheel, hurricane straps on all four corners will help prevent it from being shifted by the winds. (And yes, we have seen this happen!)
If you are leaving a vehicle, common procedure is to cover it well. Make sure to use good material - tarps usually don't make it through one Summer - and tie it down securely. Again, securing the vehicle on jack stands and covering the tires will help prevent weathering and flat spots.
If you have a tripod for your 5th wheel's tongue, use it! The more stability, the better.
Disclaimer: These suggestions are intended to help you take steps to protect your investment in your RV. They are not any kind of guarantee that your RV will not get damaged during the summer. They are a brief description of common precautions recommended by RV’ers like you and by industry professionals. Pro RV & Air, Inc. cannot be held liable for any damages resulting because of or in spite of your taking any or all of these measures. Always seek expert advice if in any doubt!
"Summerizing" your RV -