Will RV AC Unit Dometic Penguin II Replace Duo Therm Easily

Updated 09/26/2025 | Published 04/27/2025

Question:

Does the dometic penguin II replace the DUO-THERM model 600315.321 as a direct replacement? plug and play. are there any alterations needed? THis is a ducted system 20 amp circuit 13,500 btu and low profile. does the unit come with the foam seal between the unit and the roof of the rv. What is the measurement of the bolt pattern securing the unit on the inside. My mounting plate is 13 5/8 inch by 9 1/2inch center to center on the bolt hole pattern for the air intake mounting plate.

asked by: Lee

Expert Reply:

Hey Lee, I did some digging on this and found that several people have replaced an older Duo Therm with a Penguin II like the part # DMC86ZR and it was pretty simple. The wires all match color for color so it's not too difficult at all.

expert reply by: Jameson C

Jameson C.

9/26/2025

Hey Lee, did you find that the Penguin II was a straightforward replacement for your Duo-Therm? I'm curious to know how it worked out for you, as it could help others considering a similar upgrade.