want to add second A/C unit

ReneeG wrote:

PassageOfTime wrote:
We picked up a 2018 Rockwood Ultralite last fall and were told it was pre-wired for a second AC It is a 2650WS. Does anyone know if they run ducts to connect to the second unit? Also do they pre-wire to link to the two zone thermostat on the wall or just the power? I don't want to pull the existing vent out only to find I need more parts.

I don't know about your model, but typically, the second AC, in the bedroom, does not connect to your existing duct system (meaning that when it is on it would blow air to the front area through the ducts). The bedroom units have vents on the bottom and sides so that you can open, close, or direct them any direction. They are meant to basically cool that end of your RV. I find that when we had ours installed, it helped to cool the front (bedroom) of the FW tremendously, but it's noisier than the one in the living room. Just a side note, we added extra insulation to the front of our FW and since then, it stays cooler longer and the one AC on in the main living cools the entire unit.

An additional note - when the AC was installed in the bedroom, no wiring was done to our wall thermostat. the second AC has it's own controls. It will cycle off and on based on the setting.

PassageOfTime wrote:
We picked up a 2018 Rockwood Ultralite last fall and were told it was pre-wired for a second AC It is a 2650WS. Does anyone know if they run ducts to connect to the second unit? Also do they pre-wire to link to the two zone thermostat on the wall or just the power? I don't want to pull the existing vent out only to find I need more parts.

I don't know about your model, but typically, the second AC, in the bedroom, does not connect to your existing duct system (meaning that when it is on it would blow air to the front area through the ducts). The bedroom units have vents on the bottom and sides so that you can open, close, or direct them any direction. They are meant to basically cool that end of your RV. I find that when we had ours installed, it helped to cool the front (bedroom) of the FW tremendously, but it's noisier than the one in the living room. Just a side note, we added extra insulation to the front of our FW and since then, it stays cooler longer and the one AC on in the main living cools the entire unit.

We picked up a 2018 Rockwood Ultralite last fall and were told it was pre-wired for a second AC It is a 2650WS. Does anyone know if they run ducts to connect to the second unit? Also do they pre-wire to link to the two zone thermostat on the wall or just the power? I don't want to pull the existing vent out only to find I need more parts.

You might be able to put in a roof air and wire up a 2nd shore cord on the camper. I have 2 shore cords.

Low profile and consider the 15 vs 13.5.

If this is a fifth wheel then you should get a low profile AC, assuming it is being installed up front.

zell66 wrote:
I do have a 50 amp unit. It is wired for second unit in master BR but not installed. I am assuming the unit would mount in the vent opening in master BR.

Yes, if it is indeed pre-wired for a second A/C unit, you would put it in the roof vent in the master bedroom.

-Michael

I do have a 50 amp unit. It is wired for second unit in master BR but not installed. I am assuming the unit would mount in the vent opening in master BR.

If you have 50A, check in your breaker panel for a breaker marked "Second AC". That will tell you for sure if your wired for it.

There's also a structural aspect. Some RV's, like Northwood products, don't have sufficient structure in the roof for a second AC unless it was optioned that way from the factory.

If it's a 50 amp, I would assume it's prewired for a second AC unit in your bedroom. Try removing your trim for your 14" x 14" vent and check to see if there is a wire for it.

Dan