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Old 01-03-2017, 05:39 PM   #1
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Smile Adding a 2nd AC unit

Hello. I have been contemplating adding a second ac unit to our Sabre. The area for the front ac unit is already prewired and has a thermostat installed. I have checked with two different dealers about doing this work. Both dealers have stated that the unit would not be connected to the existing duct work and would just dump in to the bedroom. They stated that the units would work against each other. Is this how its normally done? I have seen other brands of RVs that both ac units are ducted but I am not sure if those ducts are connected to both ac units or run separately. Thanks for any input.....
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Old 01-03-2017, 05:57 PM   #2
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I have a friend with a Bounder Class a that came with 2 A/C units, bot run on the same duct system. I helped him add a 3rd unit in the bedroom. We tied it into the duct system in the center of the unit, 2 years with no problems.
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Old 01-03-2017, 06:07 PM   #3
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Quote:
Originally Posted by Unruly View Post
Hello. I have been contemplating adding a second ac unit to our Sabre. The area for the front ac unit is already prewired and has a thermostat installed. I have checked with two different dealers about doing this work. Both dealers have stated that the unit would not be connected to the existing duct work and would just dump in to the bedroom. They stated that the units would work against each other. Is this how its normally done? I have seen other brands of RVs that both ac units are ducted but I am not sure if those ducts are connected to both ac units or run separately. Thanks for any input.....
I put in one in bedroom not duckted no thermostat they do not work agent each other don't believe that. Worked great will freeze you out.
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Old 01-03-2017, 06:34 PM   #4
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We, I mean, I, would like to add a second A/C unit also, non ducted, in my pea sized brain I can't see two A/C units working "against" each other, they will both cool the RV????????
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Old 01-03-2017, 07:08 PM   #5
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ok let me clarify. what I am talking about them working against each other, dealer stating not me, is if they are connected together in the same duct system. I am wondering if other people with Sabre's have two ac units running on the same duct system or if one just dumps into the area where its installed out the big vent on the unit itself.... ty
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Old 01-03-2017, 07:36 PM   #6
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Had one put in the bedroom in our sabre.

No thermostat, and not ducted.

I like it cold, and this way I don't freeze the little monsters.
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Old 01-03-2017, 07:53 PM   #7
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We have a second non-ducted. Wife places a small fan on the floor at the door to blow cold air to the rest of camper. Noisy and can't sleep when it runs but having the second speeds cooling after stopping for the day. Other ducted AC almost always keeps it cool after cooling down.
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Old 01-03-2017, 07:55 PM   #8
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Unruly, I understand what you're saying and I understand what your going to do, my point was why on earth would an RV manufacturer make provisions for a second A/C unit, but the dealers say don't do it, they must have been under aged, under payed, school kids that weren't capable of doing the job and taking your money. Our Crusader is pre wired for a second A/C, non ducted, I'm going to put one in SOON, I'm sure neither one of us will encounter problems as many others have done it. Good luck. Honestly, I'm beginning to trust people on this forum more than I trust dealers lately! Better advice from more knowledgeable people.
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Old 01-03-2017, 08:07 PM   #9
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Thank you everyone for your input, I guess I will have the second one installed and not ducted in to the existing duct work. I was just wondering if both ac units could be installed to the same duct work.....
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Old 01-03-2017, 08:16 PM   #10
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2nd AC

Make sure your unit is rated for 50amps, or you will be blowing fuses.
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