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Today I think the comparison between the two is a wash and you will only have to replace the one. If you stay with Dometic, you will only have to replace the top unit on the roof. Reuse the ceiling assembly, control box and thermostat is all are working properly.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7