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04-20-2021, 02:37 AM
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#21
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,742
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As for 2 15K vs one 15K and one 13.5 it would depend on a few conditions. Where are you doing your "typical" camping, i.e. plan for the norm not the exception. The requirements for camping in the south or south west are different than north of the Mason Dixon line.
Onother consideration is the size of the camper as well as how you use it. So if the DW just has to bake cookies for the grankids thay are popping in and out of the door is different than a couple that primarily stays put.
With air conditioning bigger isn't necessarily better. An excessivly over sized unit will "short cycle" meaning it will draw down the temp too rapidly and won't remove enough of the humidity. The result is a cold an clamy feeling that's uncomfortable. For the trailers that the bedroom unit isn't ducted then in effect you're conditioning just the room as the air will not sufficiently circulate to effeciantly cool the whole rig.
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Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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04-22-2021, 08:25 AM
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#22
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Member
Join Date: Jul 2018
Location: Green Cove Springs
Posts: 45
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I’m in Florida and the summers are really hot. If you can put on a second AC do it!!
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04-22-2021, 09:55 AM
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#23
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Junior Member
Join Date: Apr 2021
Location: Fort Myers
Posts: 1
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Please stop helping !
....... BIGGER IS NOT BETTER.
If you oversize an AC unit, the system will not be able to run long enough to remove the humidity in the air.
Oh, the Tstat will be happy, but your air isnt going to be dry.
Someone even mentioned they run a “dehumidifier”....yes because they have TOO large of an AC.
(30 years licensed HVAC contractor, 17 years HVAC Foreman VA Hospital)
Buy the smaller unit !!!!
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04-22-2021, 10:36 AM
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#24
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Senior Member
Join Date: Nov 2017
Location: Mico, TX
Posts: 7,447
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Quote:
Originally Posted by The_PrimeBeef
....... BIGGER IS NOT BETTER.
If you oversize an AC unit, the system will not be able to run long enough to remove the humidity in the air.
Oh, the Tstat will be happy, but your air isnt going to be dry.
Someone even mentioned they run a “dehumidifier”....yes because they have TOO large of an AC.
(30 years licensed HVAC contractor, 17 years HVAC Foreman VA Hospital)
Buy the smaller unit !!!!
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As a non professional air conditioning expert, I doubt that you will be able to tell a whole lot of difference between a 15K and 13.5K BTU unit.
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wiredgeorge Mico TX
2006 F350 CC 4WD 6.0L
2002 Keystone Cougar 278
2006 GL1800 Roadsmith Trike
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04-22-2021, 10:53 AM
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#25
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,742
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Quote:
Originally Posted by wiredgeorge
As a non professional air conditioning expert, I doubt that you will be able to tell a whole lot of difference between a 15K and 13.5K BTU unit.
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That's an 11.11% increase in capacity. Yes, it does make a difference IMO.
__________________
Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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04-22-2021, 11:47 AM
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#26
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Site Team
Join Date: Feb 2014
Location: W. Texas
Posts: 17,674
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Quote:
Originally Posted by The_PrimeBeef
....... BIGGER IS NOT BETTER.
If you oversize an AC unit, the system will not be able to run long enough to remove the humidity in the air.
Oh, the Tstat will be happy, but your air isnt going to be dry.
Someone even mentioned they run a “dehumidifier”....yes because they have TOO large of an AC.
(30 years licensed HVAC contractor, 17 years HVAC Foreman VA Hospital)
Buy the smaller unit !!!!
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I mentioned the dehumidifier and you would be wrong. I don't use the dehumidifier because I have too much AC, I use it because we have too much humidity if/when I don't want to run the AC or use the heat pump. It enables us to run the AC less in the proper circumstances. Your comments are appreciated but incorrect.
__________________
Danny and Susan, wife of 56 years
2019 Ram 3500 Laramie CC SWB SB 6.4 4x4 4.10
2020 Montana High Country 331RL
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04-22-2021, 06:35 PM
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#27
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Junior Member
Join Date: Aug 2020
Location: Ozark
Posts: 16
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Regular Deep South campers here and for us 2 ACs were a must. We also do a small counter top dehumidifier we bought on Amazon for about $50. It makes a difference when it’s 90+ degrees with high humidity.
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04-23-2021, 04:13 AM
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#28
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Senior Member
Join Date: Jun 2019
Location: Greensboro
Posts: 129
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Funny story, always had units with 1 AC and when we went shopping for a new 5th wheel we have now, my first must have was 2 Ac units. We have a beach campground we LOVE, and its rustic still has some trees and I was always trying to be proactive and pick a spot with some shade etc.. Figured with 2 Units I wouldnt need to be picky.. First camping trip with new camper and all excited only to notice when backing in the older side of the campground we like was only 30 amp service so I could still only run 1 AC.. never noticed before cause All I had was 30 amp, i just assumed there was a 50 amp breaker service as well.. Nope!! LOL.. Anyway, we did fine, but it was pretty humbling!
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2019 369BHS
Towed with 2018 Ram 3500 Cummins LB CC 4x4 G56
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04-23-2021, 05:11 AM
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#29
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Senior Member
Join Date: Aug 2012
Location: Waco, Tx
Posts: 5,457
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I'll stick with my original assessment, hot and humid weather like central Texas last summer 111` with 80% humidity in the shade and not a tree with 100 yards, two 15K were still struggling at 9 pm... and yet it looked like a waterfall off the front and back of the trailer...
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2015 Ford F350 DRW 6.7 Diesel XL
2020 Avalanche 313 RS
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