We also own a 2022 Elite II, Hull #1291. Having read too many posts on this forum about the Demonic AC unit sounding like a jet taking off, and that Oliver was making the much quieter Truma AC unit available on 2023 models, we opted to postpone our delivery from September to November of 2022 to get a Truma. We paid a premium for the upgrade, but we have not regretted our choice. Although expensive, in your shoes, I would schedule an appointment with the closest Oliver dealer to swap the Demonic for a Truma.
If you have strong handyman skills, you can consider a DIY install. with one of the brands referenced in jd1923's post above. There are informative threads on this forum with detailed "how to" instructions.
And, please update your footer to include your Hull #, tow vehicle and other important data, like you see on the above posts.