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Thermostat Needed to Install Dometic FreshJet 3 AC Unit  

Updated 10/27/2025 | Published 03/12/2025

Question:

I am considering a Dometic Freshjet 3 as a replacement for an old 2006? Duo Therm 630516.331 unit that has the control box built into hardwired the rooftop unit. Therefore, Ill need a new control box to operate the new AC as well as the existing furnace. Is the DMC83ZR what i need?

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Expert Reply:

Hey Fraser, yes the Dometic thermostat part # DMC83ZR that you referenced is correct for you to use when adding the Dometic Freshjet 3 part # DMC49ZR. This thermostat had furnace controls as well.

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Jameson C
Jameson C. profile picture

Jameson C.

10/27/2025

Hey Fraser, how did the setup with the Dometic Freshjet 3 and the CT thermostat go? Your results could really help others upgrading from older Duo Therm units.

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