Best Replacement AC for a Dometic B59516.711 On A 2016 Jayco Jayfeather X23B

Updated 08/12/2026 | Published 08/08/2026

Question:

Hello - I have a 2016 Jayco Jayfeather X23B. I need to replace the entire AC unit and interior air flow box Dometic B59516.711. Currently I do not have have a separate thermostat/control panel. Dont really need one but I am I am not opposed to installing one. I am looking for a unit that is quieter and has better air flow than the Dometic. I am OK with a used unit if it comes with some sort of warranty and I am looking to spend in the neighborhood of $600-800. What do you recommend? - George

asked by: George, J

Expert Reply:

Hey George, thanks for reaching out. Based on what you've described, the Advent Air RV Air Conditioner System # ADV39QR is the direction I'd go. Since your current Dometic system uses the manual controls in the ceiling assembly and doesn't have a separate wall thermostat, this kit is a great fit. It includes a 15,500 BTU rooftop unit and a manual air distribution box, so you get everything you need to replace your existing system in one package.

I think you'll be really happy with this upgrade. The extra cooling capacity over your old 13,500 BTU unit helps cool the trailer faster, and Advent Air units are known for moving a lot of air while running noticeably quieter than many older Dometic systems. Since the controls are built into the ceiling assembly, there's no need to install a wall thermostat.

If your goal is a complete replacement that's quieter, has better airflow, and installs without adding unnecessary complexity, the # ADV39QR is an excellent choice.

Do you usually camp in a lot of warmer climates?

expert reply by: Jesse M