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Old 03-05-2012, 09:27 PM   #1
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Thermostat replacement

Hello fellow RV'ers I am kinda new to the RV world but anyway. I have a 36' coachman chaparral single ac which I plan to add a second. But my question is can I replace the OEM thermostat with a regular residential thermostat or do I have to use one made for a RV? Thanks in advance.

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Old 03-06-2012, 05:41 AM   #2
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RV thermostats operate on 12v. Residential thermostats operate on about 24 volts AC. The best and easiest to do is replace the RV thermostat with a Hunter battery powered digital thermostat. It will control the heater also.
The red thermostat wire coming out of the wall is 12v power. If you make the change just tape the end. See the link for wiring it up.
Hunter Thermostat

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Old 03-06-2012, 06:21 AM   #3
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x2 on the Hunter thermostat.

Also, do you plan to run both A/C units from one thermostat? if so, you might consider having a separate thermostat for each unit. That way you can run one on warm days and run both on hot days.....

just my 2c...
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Old 03-06-2012, 11:44 AM   #4
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Ok thanks for the info. Will be very handy.
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Old 03-06-2012, 01:45 PM   #5
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Coleman digital thermostats will run on 12v DC. The aren't cheap but they have the advantage that they have already have a two speed switch for the fan built in; you have to add one to a Hunter. If your air conditioners are Dometic, you probably would have to use a Dometic thermostat (Dometic thermostats will work only on Dometic air conditioners). One advantage of using a Dometic thermostat is you can run both air conditioners off one thermostat (depending on the model) but each one will operate and can be programmed independently of the other.
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Old 03-07-2012, 09:18 AM   #6
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We replaced the thermostat in our 5er with one of the Hunter battery-powered units from Lowes. We added the fan high/low switch. It's really simple to do and it works great! It keeps our temp within 2 degrees! We got the 19.95 model that is not programmable. Good luck!

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