Reply
 
Thread Tools Display Modes
Old 03-24-2017, 09:03 AM   #1
Junior Member
 
Join Date: Aug 2015
Posts: 26
AC not cooling enough when in 90's

We have the Forest River Rockwood 8289 WS and found the AC does not keep the RV cool when the temps rise into the high 80's and more. Unit has one AC, 13,500 btu. Anyone experience same and what was done to improve efficiency?
__________________

gen3rbc is offline   Reply With Quote
Old 03-24-2017, 09:06 AM   #2
Left Coast
 
Join Date: Dec 2014
Location: vancouver,washington
Posts: 15,649
Send a message via Yahoo to bob caldwell
Use the quick dump.....Been in 90 to 100 degree weather in the last couple weeks with no problem, but I also use a box fan...I also cover windows on sun side
__________________

bob caldwell is offline   Reply With Quote
Old 03-24-2017, 09:10 AM   #3
Prime Member
 
Join Date: Apr 2016
Location: About 30 miles west of Beantown.
Posts: 3,286
Use quick air dump

Close blinds to keep sun out

Make sure your roof is clean. A dirty roof traps heat from the sun better.

Close off unused rooms
__________________

Temporarily Camper-Less
2013 Chevy Silverado 2500HD LTZ 6.6L V8 Duramax

Forever in my memory. Forever in my heart.
Laurie J. Wood 3/22/67 - 8/23/19
timfromma is offline   Reply With Quote
Old 03-24-2017, 09:23 AM   #4
Senior Member
 
jeff64's Avatar
 
Join Date: Mar 2015
Location: N. Illinois
Posts: 1,444
Do a search on A/C modifications. It'll keep you busy most of the day. Tons of ideas
__________________
2016 Flagstaff 27VRL Emerald
14K Equalizer
2014 GMC 2500HD CC 4X4 6.0L
jeff64 is offline   Reply With Quote
Old 03-24-2017, 09:38 AM   #5
Senior Member
 
Join Date: May 2016
Posts: 1,363
There are lots of ideas and recommendations out there, however a single 13,500 ac unit in a rig your size in 90 degree temps will have its limits.

Does your rig have a option of a second ac unit? If so, I would add one. If not, I would upgrade to a 15,000 unit... or upgrade and install a second one.
325BH is offline   Reply With Quote
Old 03-24-2017, 09:46 AM   #6
Senior Member
 
ben31's Avatar
 
Join Date: Apr 2015
Location: Middle GA
Posts: 1,266
In addition to the suggestions above, the best thing we found to get the most out of the A/C was to manually set the fan to high and leave it there. It is more noisy and then runs all the time, but it helps. It keeps the air circulating, so you are less likely to get hot/cold areas and it also helps distribute the cool air better than the wimpy fan speeds it tries to use.
__________________
Ben and Doreen
Home Away From Home - 2017 PT Crusader 315RST
TV - 2008 F250 Lariat SuperCrew 4X4 6.4 Diesel
Never Enough Time Camping!!
ben31 is offline   Reply With Quote
Old 03-24-2017, 09:58 AM   #7
Senior Member
 
Join Date: Apr 2012
Posts: 3,028
Reflective insulation in the windows will help drastically. Going to a 15K unit will only give you a little over 10% increase in cooling capacity and is unlikely to make a major difference without additional steps. Keep in mind that humidity plays a major role in an a/c's cooling capability, so it's not just about temp.
dustman_stx is offline   Reply With Quote
Old 03-24-2017, 10:09 AM   #8
Senior Member
 
Join Date: Mar 2016
Posts: 222
I put this on another page discussing the same RV AC units.
Hope it helps.
When FR installed my AC (Flagstaff 27BEWS, single unit 15K) they went goofy with the expanding foam insulation. When I removed the return filters for a cleaning I noticed that the return air ducts were partially blocked with the dried foam insulation. I took a knife and carefully (as there are exposed wires on one side) cut the foam out. Made a difference in performance and reduced the condensation. I recommend every owner do this.
RMc
Wheels Down is offline   Reply With Quote
Old 03-24-2017, 10:16 AM   #9
Senior Member
 
JustB_Rad's Avatar
 
Join Date: Jun 2015
Posts: 674
X2 on the Reflectix over the windows makes a HUGE difference. We went from the Air running constantly in 80 degree temps to the air actually turning off in the mid 90's humid air. Plus, it keeps it nice and dark for trying to sleep past sunrise.
__________________
2016 Grey Wolf 26DBH following a 2014 RAM 1500 Outdoorsman

Life is good...Live it!
Nights Camped - (2014) - 16 in 6 trips (2015) - 20 in 6 trips
(2016) - 21 in 7 trips
(2017) - 12 in 3 and going seasonal for at least the rest of the year!
JustB_Rad is offline   Reply With Quote
Old 03-24-2017, 10:34 AM   #10
Junior Member
 
Join Date: Aug 2015
Posts: 26
8289 ws ac

Thanks for all the recommendations. Without changing the unit, I'll try several of the suggestions and hopefully a cooler unit will prevail! This is a very informative forum!
gen3rbc is offline   Reply With Quote
Old 03-24-2017, 10:35 AM   #11
Senior Member
 
ManlyMan's Avatar
 
Join Date: Dec 2015
Posts: 294
In my opinion any fifth wheel longer than 30 feet and with 3 slideouts should be equipped with 50 amp service and two A/C’s if you plan to camp/RV in areas where temperatures exceed 85 degrees Fahrenheit.

Also, this is just my opinion, your fifth wheel should have a 15k A/C as standard equipment instead of optional. What’s the R-value of the roof, sidewalls, and floor in your Rockwood?
ManlyMan is offline   Reply With Quote
Old 03-24-2017, 10:39 AM   #12
Senior Member
 
Iwannacamp's Avatar
 
Join Date: Aug 2013
Posts: 7,302
another couple to check... outdoor kitchen, outdoor storage areas(under dinette etc..) you can see God through alot of these places, so heat gets in.
__________________
2017 Puma 297RLSS
2005 Ram 2500 4X4 diesel SMOKER!!
I love puns, irony and tasteless jokes...
born in Texas.... live in Arkansas
Iwannacamp is offline   Reply With Quote
Old 03-24-2017, 10:58 AM   #13
Senior Member
 
Join Date: Jul 2010
Location: Waynesville
Posts: 13,930
Place insulated Donuts in All your 14 x 14 Vents! Big improvement! Youroo!!
__________________
youroo is offline   Reply With Quote
Old 03-24-2017, 11:05 AM   #14
Senior Member
 
DFW Rusty's Avatar
 
Join Date: May 2014
Location: TX
Posts: 213
Since yours is a big O'l 5th wheel, I would say a single 13.5k will not work when it gets up in the mid 90's. I would consider getting a second a/c installed. Even a single 15k will struggle.

However, at 90 degrees a 13.5k should be relatively ok. It may take a long time to cool it down if your just plugging it in or something, but it should be cooled off within a few hours. If it is a dometic there is a chance it's losing it's charge as well. We just went through this with ours. I post a link to my thread from about a month ago below:

http://www.forestriverforums.com/for...nk-126728.html
__________________
2020 East to West Della terra 31k3s
2012 Ford F350 King Ranch FX4
DFW Rusty is offline   Reply With Quote
Old 03-24-2017, 11:27 AM   #15
Junior Member
 
TWacker's Avatar
 
Join Date: Feb 2017
Location: Early, Texas
Posts: 4
We have a 2016 343RSOK with a 13.5K in the front and 15K in the rear. The front works great. The rear, however has been disappointing. On moderate days it struggles to keep up. This is our first trailer with a ducted return air so I don't know what to check on.
TWacker is offline   Reply With Quote
Old 03-24-2017, 11:43 AM   #16
Member
 
Join Date: May 2016
Location: Western MA
Posts: 47
Check the skylight in the bathroom. Mine was clear bubble and clear inner shield. Acted like a magnifying glass and generated incredible amount of heat. Painted the exterior bubble with krylon white paint and put insulating silver shield inside the interior shield. Made a huge difference.
bkool2323 is offline   Reply With Quote
Old 03-24-2017, 12:18 PM   #17
Member
 
joy-rick's Avatar
 
Join Date: Oct 2010
Location: Suburban Detroit
Posts: 67
What does "quick air dump" refer to?
__________________
Rick (K8RWG), Joy, and Daffy (the spoiled Calico cat)

2014 Rockwood 8315BSS
2016 F250 SC LWB 4x4 6.2 3.73
Reese Dual Cam
Honda EU2000i
joy-rick is offline   Reply With Quote
Old 03-24-2017, 12:21 PM   #18
Member
 
Join Date: Apr 2016
Location: Vermont
Posts: 70
Have a small Clipper 17BH and had the same problem. Took it to my dealer and they did some type of test and Coachmen replaced the unit. If it is still under warranty, why not let them deal with it. Agree with the other suggestions, especially the skylight/magnifying glass, although in cooler temps it does warm up the bathroom a bit.
stellaandspike is offline   Reply With Quote
Old 03-24-2017, 12:30 PM   #19
Left Coast
 
Join Date: Dec 2014
Location: vancouver,washington
Posts: 15,649
Send a message via Yahoo to bob caldwell
Quick air dump it when you open inside grill work by the slide tab.
Return air is the bigger vent with the filter behind it, and the outlet into RV is the smaller one. .This one has adjustable fins that you can adjust for airflow into RV
bob caldwell is offline   Reply With Quote
Old 03-24-2017, 12:37 PM   #20
Senior Member
 
Join Date: May 2016
Posts: 1,363
Quote:
Originally Posted by joy-rick View Post
What does "quick air dump" refer to?


It is opening up the vents on the air conditioner's grill. For units that have forced air ductwork (to send cold air to the ceiling vents throughout the camper), opening the "quick dump" vents sends all the cold air directly out of the air conditioner's grill vents rather than send it through the ductwork.
__________________

325BH is offline   Reply With Quote
Reply

Tags
cooling

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 06:27 PM.


×