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Old 06-01-2020, 07:13 AM   #1
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2509s 13.5 AC

I am in the process of looking to get into a 2509s. Is the 13.5 ac enough or should i look for the upgraded 15 ac? In the summers it can get hot where i camp.
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Old 06-01-2020, 07:21 AM   #2
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No brainer. Get the bigger unit.
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Old 06-01-2020, 08:07 AM   #3
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I am looking at a couple used ones. Didnt know if i need tonwait for one with the 15 AC or does the 13.5 work fine.
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Old 06-01-2020, 03:25 PM   #4
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At the altitudes where I camp, a 13.5K can barely be started with a 3500 W generator. A 15K would need a soft start. The BTU output is only 10% more, but I wanted the option to use a generator. Therefore, I agree with houstonstroker: it was a no brainer, get the smaller unit. ;-)

Like most things, there are trade-offs. If you're not camping at 7-11K altitudes, I'd probably opt for the larger unit. But, again, it's only about 10% more output.
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Old 06-01-2020, 09:14 PM   #5
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So the 13.5 does fine with cooling the camper is 90+ heat? I mostly camp not in high altitude but we do take at least 2 multi week trips that are at altitudes a year currently.
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Old 06-02-2020, 12:50 PM   #6
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So the 13.5 does fine with cooling the camper is 90+ heat? I mostly camp not in high altitude but we do take at least 2 multi week trips that are at altitudes a year currently.
There are a lot of variables. How well insulated, how many windows, camping in shade or not, outside humidity. But the biggest one, IMHO, is "how cool do you want it?" We typically set ours to 80 deg during the day. Enough to keep the humidity down; we're not doing calisthenics inside. But there are people who are unhappy if the temperature gets above 70 deg. If you tend to the latter, go with the bigger unit.
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Old 06-02-2020, 08:29 PM   #7
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what part of the country?

our 13.5 does just fine on the east coast with humidity and high temps.
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Old 06-02-2020, 08:34 PM   #8
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We are in illinois but go all over the country on trips. I would imagine a 13.5 will be fine slso.
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Old 06-03-2020, 05:18 AM   #9
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I had the 2306 with the 13.5k it worked just fine and I could run it with my igen 2500 without having to install a soft start. I'll be picking up my 2509s soon as the dealer gets it, unfortunately it has the 15k upgrade. Don't think my igen 2500 will run it now. The price was to good to pass up so I may just have to get a new generator.
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Old 06-03-2020, 09:18 AM   #10
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I had the 2306 with the 13.5k it worked just fine and I could run it with my igen 2500 without having to install a soft start. I'll be picking up my 2509s soon as the dealer gets it, unfortunately it has the 15k upgrade. Don't think my igen 2500 will run it now. The price was to good to pass up so I may just have to get a new generator.
If your soft-start was just a capacitor, you might want to look into a Micro-Air before you spend money on a new generator. I have no personal experience, but it seems to have positive responses here on the forum.

https://www.microair.net/collections...-soft-starters
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Old 06-03-2020, 09:25 AM   #11
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I'm from the SW, so it's a no brainer, get the 15k and a properly sized generator. I run my 15k with 2 paralleled 2000k (4000k) Hondas from sea level to 8700', no problem. And yes, in Cloudcroft NM at 8600' you will use the a/c during the summer
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Old 06-03-2020, 09:37 AM   #12
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We had a 2015 2504S with the 13.5K and then we traded that for a 2018 2504S with the 15K. Most of our camping is in the Mid Atlantic. My opinion, get the 15K.

My thought is, why run the 13.5K on high, when you can run the 15K on medium and get the same temp in the trailer. You can always turn the larger A/C down, but you cant turn the smaller A/C up (beyond its capabilities).

If you are camped in among the trees and there is plenty of shade, the 13.5K will be more than enough. But if you happen to be somewhere that sits in the sun for long stretches of the day, especially in the afternoon, you will want the larger one. Just my opinion, if you can get a tremendous deal on a unit with the 13.5, and its everything you want, go for it. If you can hold out for a 15k, do that. There are no downsides to the larger one, in my opinion.
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Old 06-07-2020, 11:01 AM   #13
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I'm in Colorado and the 13.5 is more than enough. My wife thinks we are in a fridge a lot, constantly telling me to turn it down.
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Old 06-07-2020, 11:39 AM   #14
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We currently have a rockwood popup and that is how it is now. Your either freezing or hot. It is hard to regulate without a thermostat.
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Old 06-07-2020, 02:09 PM   #15
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We currently have a rockwood popup and that is how it is now. Your either freezing or hot. It is hard to regulate without a thermostat.
Your a/c is quite different than the OP's trailer. Their a/c has a thermostat because it has ducted a/c.
You have the old school BFC(Blast From the Center) style of a/c.
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