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Old 07-19-2018, 12:11 PM   #1
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27BHS A/C Cooling Ability in Hot Weather?

Hi - We are currently shopping for a new travel trailer and have narrowed down one of our choices to a 2019 Timber Ridge 27BHS. We do year round camping, including several week long trips in hot temps (90-110 degrees) along the Arizona river (Parker/Havasu). Sometimes these site are partially shaded, but in most cases there is little to no shade at all.

The unit we are looking at has a single 13.5K BTU A/C, which we have concerns over its ability to cool the trailer in hot weather. I've looked into swapping it with a 15K unit, but I'm unsure of whether it is necessary or will help. Our last RV was a Winnebago 31' class C with a single 15K BTU A/C. Even with Reflectixs in all the windows the A/C struggled to keep the coach at 90 degrees in plus 100 degree weather.

To help with our decision I'd love to hear from owners regarding:
  1. Real world experience from usage in hot weather?
  1. Upgraded their A/C to a 15K unit and used it in hot weather?

Thank you in advance.
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Old 07-19-2018, 01:06 PM   #2
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We were in 100+ weather last summer for 4 days, our 13.5 unit performed admirably ion our 26RKS. The trick is getting the A/C on early before the unit gets to hot, and keeping the shades drawn and the roof vents insulated. We were hot the first day but left the A/C on constantly and the unit kept us at nice 72 degrees. It did not run constantly either, but there was a steady stream of water running of roof all day. If you have kids that are running in and out of the unit all day your results may vary.
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Old 07-19-2018, 02:06 PM   #3
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Bigger is always better with AC units(my opinion).
Faster cool down, less run time, etc etc.
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Old 07-19-2018, 02:07 PM   #4
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The 15k unit almost keeps up in my 24rks up to 100 degrees. Above 100? I keep the shades drawn and foil bubble wrap in the windows. By 110+ it doesnít stand a chance.

Full sun...not many trees in West Texas.
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Old 07-19-2018, 04:54 PM   #5
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If it gets hot inside and 110 outside the 13.5 will never cycle. Get two 13.5's so if one fails you won't cook and 2 will work great at even 111 deg.
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Old 07-19-2018, 07:18 PM   #6
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I researched researched and researched AC's and ended up getting a AtWood Air Command for my trailer. It is engineered for the Australian outback and built in Australia too, not in China like Dometic and others. It did take over a month to ship to my house in California but know it will be worth it!

My trailer is a 2016 model and have had nothing with issues with the AC it came with. I shouldn't have to replace a 2 year old AC on a new Toy Hauler but I can't see spending money on it to repair it after having so many issues with it. Rather toss it and move on to something better.
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Old 07-20-2018, 07:56 AM   #7
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Iím weird but I would never own any rv with only 1 a/c, no matter what size.

But then again, I live in Texas.

And there is no way 1 a/c can keep up.

I also donít like to keep my shades down or cover windows.

Itís important to remember that orv is a northern brand. They say 4 seasons, but they are really made by and sold to people who live in the far north

That being said, with my 2 a/cís , my unit performs admirably in the heat. Itís still important to keep the shade down or mostly down on the ďhot sideĒ windows or the windows that are receiving the most sun at any one point and time,, but we donít have to keep them all down all day, just whatever window is getting nailed in the afternoon.

the door is also a heat sink, but we have yet to be uncomfortable in any conditions

Something you can consider is to install another 13.5 in place of the bedroom fan and power it from an extension cord to the pedestal.

This is done in the older airstream world and works fine. That second ac would absolutely do the trick. I really do believe that the foam walls in the orv work and work well.
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Old 07-20-2018, 11:38 AM   #8
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The single 13.5 in our 280RLS is marginal at best. Works ok with temps in the 80's but if it's going to be in the 90's or, heaven forbid, tripple digits, you'd better get it running early in the morning and keep all window shades drawn, and even then it will struggle to keep temps anywhere in the 70's inside the TT.

I am considering swapping it for a 15k unit. Would love to have 2 units but I've only got a 30a system in my TT.
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Old 07-20-2018, 02:34 PM   #9
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Really considering a mini split in my 24RKS...quieter, more efficient, more capacity on fewer amps, but uglier. Iíd lose the near worthless cabinet above my TV
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Old 07-20-2018, 07:09 PM   #10
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We owned a 27bhs. The AC will not keep up once you go over 85. Just not enough cooling capacity. Our 27bhs was a solid unit and no build or quality complaints.
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Old 07-24-2018, 09:30 AM   #11
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Thank you for all the replies. We've decided to go with the 27BHS, even though it sounds like there will be a potential cooling issue when temps peek over 100 degrees.

We take delivery this Saturday and already have a trip planned for the following weekend. Temps will be in the mid 90s w/o shade, so that will give us a good idea of how it does with the 13.5 A/C unit. I'll just start it early like everyone suggests.

Based on the suggestions we will most likely upgrade the 13.5 to a 15k unit. If we find that is not enough, we'll look into installing a 13.5 unit over the bedroom with a dedicated extension cord. Thanks again.
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Old 07-25-2018, 01:46 PM   #12
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We have a 2016 Blackstone 280RLS which is a similar size as the 27BHS. Ours has a Coleman low profile 15K BTU A/C. We are currently dry camping in Eastern Oregon and the highs are in the mid 90's. During the peak of the heat I have run the A/C on the generator and the interior temp drops to the mid 80's within 30 minutes and then to the upper 70s after 60 minutes total. I am satisfied with it.

The climate is very dry (15% humidity) so that may be helping out.
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Old 07-25-2018, 03:22 PM   #13
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Iím in central Oregon itís 98 degrees out and itís 84 inside with a 13.5. Get the bigger one.
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Old 07-25-2018, 08:32 PM   #14
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Quote:
Originally Posted by John Pattee View Post
We have a 2016 Blackstone 280RLS which is a similar size as the 27BHS. Ours has a Coleman low profile 15K BTU A/C. We are currently dry camping in Eastern Oregon and the highs are in the mid 90's. During the peak of the heat I have run the A/C on the generator and the interior temp drops to the mid 80's within 30 minutes and then to the upper 70s after 60 minutes total. I am satisfied with it.

The climate is very dry (15% humidity) so that may be helping out.
Update - I realized that I had the AC venting right toward the thermostat yesterday which skewed the results. Today I adjusted the vent and took closer notes. The temp dropped from 95 to 82 in one hour. It took 30 more minutes to get down to 78 degrees. Our campsite is also partially shaded.
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