question about 2 AC units

[Bryon80]

I have a Sandpiper 30iok select with 2 AC ducted units. I was under the impression that the main unit (zone 1) controlled the living,kitchen, and rear bed room. The front unit (zone 2) controlled the front bedroom. While I was camping at a campground with only 30 amp hook up I was only able to run one unit at a time. I noticed that when the main unit was running I was getting air out of all vents including the front bedroom. When I cut the main unit off and the zone 2 unit on I noticed I'm still getting air out of all vents. Just curious about how the units work together when I'm able to run both units together?

[Blackhat6mike]

Sounds like someone forgot to install a block in the vent system. If your individual vents open and close, you will probably have to go with that. Otherwise you can pull one of the vents between the two zones and install your own block. That will keep air where it belongs.

[StoneyG]

We're on our third ducted AC system with multiple ACs and all three got circulation through the ducted system from the main AC to all outlet vents. I'm not so sure about the bedroom ACs.

[Mr. Dan]

My 2015 Wildcat has "NEW! Dual Ducted Air Conditioner "Racetrack" with Triple Insulated, Foil Wrapped, Light Weight Ducts" which allows (as a feature, not a bug) each unit running by itself to send cool air to all vents. This is helpful at a 30a only site since I can run either unit and cool the entire trailer although at a reduced capacity.

[pappy]

i knew the ducting was all tied together, when i had them install bedroom ac. i opted for direct vent.

[dcheatwood]

Mine blow thru all vents also. When weather temps allow I run bedroom during the day and main a/c at night for quieter operation. Can close unneeded vents.

[Edmund]

To my knowledge each one blows through all vents, it is just that the most volume would come through the ducts that are closest to the AC unit that is running.

[hbillsmith]

I am glad its this way. I can run my Champion 3100 inverter which can only run one A/C and still get coll in all areas.

[Blackhat6mike]

Our main AC blows through all vents. Being all vents are closeable, we have the option of where the air goes/doesn't go. Bedroom AC only cools BR. Don't have to cool entire unit at night. Much more efficient. Since the BR AC is much smaller than main unit, we can run it off the inverter for several hours if need be [boondocking]. I have run it for over 4 hours so far without depleting bat bank below 12vdc. 500 amp hrs goes a long way for a small AC. That's why we opted for the smaller unit just to cool one room. Direct air, no vents.

[Bryon80]

Thanks for the info. That makes sense now.

[whj77372]

Just got a new Wildcat and that is what they told us, they both pump air thru the whole system. We had a second AC in our bedroom for the last fiver the we had and it was a stand alone unit not ducted. We are happy with the ducked ACs. Good Luck