Cindi, I work for a professional moving company and I would like to point out a few things for you.
1. Climate Controlled does not mean air-conditioned. You need to ask specifically about what they offer or have them define what Climate Controlled means, I would assume that low humidity is your primary concern.
2. Most self-storage places may only offer minimal insurance coverages, and most do not offer any insurance for Acts of God coverage, professional movers in your area may. You need to ask what happens if your storage place gets flooded or flattened in a storm if you need that kind of protection. As stated before most will not cover high-value items either.
3. The problem you have with DIY storage and similar facilities is the lack of equipment to move the items and the heavy duty blankets to wrap your furniture. You will need to make the call to see if it is worth it to you to rent or buy these items for your stuff.
4. Some people have expounded at how "expensive" it is to hire a professional and that some are less than trustworthy. You need to decide what your time is worth and you need to be sure you are physically able to do the moving and stacking required. No matter what, if you injure yourself doing this, that will be much more expensive than hiring a professional!
If you do decide to use a mover, I suggest you check with your local Realtor Association for recommendations and check with your local BBB or similar for complaints. You can also check with the American Moving and Storage Association at: Moving.org - Trust Your Move to a ProMover
, for referrals. Unfortunately, it looks like Utah does not require movers to be licensed and there isn't a State Moving Association so your consumer protections may be limited. I hope this helps, happy to answer any other questions you may have. BTW- Summer is the busiest time of the year for movers and storage facilities so act soon!