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Old 06-15-2016, 10:47 AM   #1
Junior Member
Join Date: Oct 2013
Location: Raleigh
Posts: 7
Adding 2nd AC to WH 33BHBS


I've been doing some research and I've made up my mind to add the second AC unit to the back master bedroom of our trailer. The 15k unit just can't keep up in weather 90 or higher. I have the roof plans from Jayco and it shows the location of the 2nd AC option. I don't have 50A, so I'm planning on adding a separate 20A circuit and running an extra cord to the pedestal.

So, I feel comfortable in doing the project, but there is one thing I cannot come to a conclusion on. Should I tie into the existing duct (if possible), or just a direct downflow into the bedroom? Are there any adverse effects possible from running both AC units at the same time, feeding the same duct?


2014 White Hawk 33BHBS
2014 Dodge Ram 2500 CTD, Megacab, 4x4
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Old 06-15-2016, 12:25 PM   #2
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House of Harview's Avatar
Join Date: Apr 2016
Location: La La Land
Posts: 102
I too will be adding a second AC unit to the Octane TH specified in my signature section below. I contacted my local dealer and asked if the second AC unit would be duct-ed and they said no. They claim it would be non-duct-ed and therefore not operated via the wall t-stat. My TH TT is different than yours in that the main bedroom is up front and the single duct-ed AC unit is a pretty good distance from the bedroom. I do have the 50 amp upgrade however, I plan installing an 11K BTU Super Saver Coleman unit because that will afford the ability to run a single Yamaha 2000 gen. with no problem while boondocking as long as I'm sure sure to disconnect the main inverter so the battery charger won't create an overload and also switching the fridge to propane. I elected not to go with an on board gen. and will be pairing two 2000 watt Yamahas to run the main 13.5 AC and other stuff during the day (not both ACs together, however) when boondocking. Of course, if we are at a 50 amp CG hook-up, I could then safely run both ACs and most other items because I am set up with the 50 amp Progressive surge protector first from the pole, 50 amp Hugh's autoformer second followed by a Sure Guard multi-phase protector. Based on what I learned here on this venue, I should be good to go for most power needs.

I will most likely later get into a decent solar system as well as upgrade the brakes to the Kodiak 7K disc brake system to go with the 17.5" tires and wheel upgrade. Sorta, kinda seems like these upgrades are and will be endless and expensive but, if one is going to be in it for the long haul, it is what it is, eh?
2017 Octane T32C TH (on order as of 04/08/2016)
TV: 2004 Dodge 2500 QC SB 4X4 CTD w/Timbrens
2007 John Deere Gator 850D Diesel UTV w/Cab
(2) Yamaha EF2000is Inverter Generators
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