I have the Dometic thermostat and it controls the furnace and A/C. When I select Fan Only it circulates only the A/C vented air which is quieter than the furnace air. I've heard of people using the fireplace on cool days to heat the coach and use the Fan Only in the rear A/C to circulate that heat.
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Jim & Martha Abernathy
2014 Montana 3402RL Level UP, Sailun S637's, TST 507, 500W solar
2014 Ram 3500 Laramie® 4x2 diesel dually crew-cab 3.73 axle, Reese R20
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