RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class C Motorhome Discussions
Click Here to Login

Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 12-01-2018, 09:54 PM   #1
Junior Member
Join Date: Dec 2018
Posts: 4
Is 13,000 BTU A/C enough?

Hello all, I'm new to the forum. I'm preparing to purchase my first RV. After much research, I have finally narrowed my decision down to two Class C's. They are both 31' and pretty much identical in layout, different manufactures, and both are around the same price. One of the key differences is one has a 13,000 BTU A/C and the other has a 15,000. Naturally, the one with the 13k has a few more amenities and creature comforts than the one with the 15k. But staying cool is more important to me than some of these amenities. Can any of you experienced RV'rs tell me if this is an issue? Is the 13k enough to keep the coach adequately cool during the summer months? Thanks for your input.

srickards is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 12-01-2018, 10:07 PM   #2
Senior Member
Join Date: Jul 2018
Posts: 1,102
If you have any darker paints on your coach, would go for the 15000 btu unit. A 31 footer is pretty big for one ac, especially if you travel in the south in summertime.

Foretravel tag axle 40 ft. 500 hp/1550 ft/lbs ism 1455 watts on the roof. 600 a/h's lithium down below.
jcussen is offline   Reply With Quote
Old 12-01-2018, 10:15 PM   #3
GScott423's Avatar
Join Date: Nov 2017
Location: Helena, MT
Posts: 62
I ordered our 25’ trailer with 13,000 and wish Imhad gone for the larger AC
Scott lockwood
23 ‘Whitehawk
GMC 1/2ton
GScott423 is offline   Reply With Quote
Old 12-01-2018, 10:16 PM   #4
Senior Member
Join Date: Jan 2005
Posts: 892
Well it depends on where you'll be traveling Az, Nev Tex, or Idaho. One variable that's extremely important is the outside color of the motorhome. And I mean its really important. The darker the color and the larger the dark area the more difficult it will be to keep it cool. My motorhome had black areas and cream colored areas.
The cream color areas would be slightly hotter than the ambient but the black areas would 40-50 or more-- hotter than ambient. In Las Vegas it was 107f my black areas in the sun were 150-160f. So the a/c wasn't trying to just cool in 107f heat it had to overcome the areas of 160f. Colors are very important! As are the normal things people think of- insulation, double pane windows etc. Safe Travels and good luck with your choice!!
Cat is offline   Reply With Quote
Old 12-01-2018, 11:02 PM   #5
Senior Member
avfordguy's Avatar
Monaco Owners Club
Ford Super Duty Owner
Join Date: Dec 2008
Location: Kingsville TX
Posts: 991
I agree with all the above, sun load is a big impact on a class c , ducted roof air is nice but has to put up with sun load on the roof, we live in the deep south of texas at 103 outside temp with no shade the best I could get was 83f indoors 31ft tioga with 2 slides, depending where you camp 15k may not be enough
avfordguy is offline   Reply With Quote
Old 12-01-2018, 11:12 PM   #6
Senior Member
SailorSam's Avatar
Join Date: Apr 2016
Posts: 261
We've been in Georgia, Florida, Kentucky, North Carolina in summer with our 26' TT. We upgraded to the 15K AC. It was able to keep us comfortable. I don't think a 13.5 would have done the job.
SE Michigan, F-150 Plat SCrew, Flagstaff 26 FKWS, ProPride
SailorSam is offline   Reply With Quote
Old 12-01-2018, 11:20 PM   #7
Senior Member
Isaac-1's Avatar
Join Date: Jun 2016
Location: SW Louisiana
Posts: 3,346
I agree with what has been said above, my 28 ft coach with no slides has a 15,000 btu air conditioner, and it has to be running solidly all day to keep the interior below 80 degrees if parked in the sun here in the summer in south Louisiana. Adding an exterior sunscreen on the front windshield does help some though.
2002 Safari Trek 2830 on P32 Chassis with 8.1L
Isaac-1 is offline   Reply With Quote
Old 12-01-2018, 11:40 PM   #8
Senior Member
Mr_D's Avatar
Country Coach Owners Club
Winnebago Owners Club
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 35,842
We had a '02 40' Dutch Star. I purposely ordered it with dual 13k heat pumps so I could run both on 30 amps.
In Yuma in 95° temps we we just fine running one with just a slight bit of shade. Rig was several shades of gold with a white roof, extra factory installed roof insulation and dual pane windows.
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 CR-V
Mr_D is offline   Reply With Quote
Old 12-01-2018, 11:47 PM   #9
Senior Member
JerryP's Avatar
Newmar Owners Club
Join Date: Sep 2008
Location: Dallas TX
Posts: 261
31' Class A with two 15K heat pumps

My 31' Newmar Bay Star has two 15K heat pumps. Currently my garage only has a single 30A receptacle. This only allows one AC to operate. In Dallas Texas during summer, only one AC will not cool my RV.

In my RV past, I have had 2 different 28' class C RVs. Both of these had two AC units. I think that they were both 13K units. These were also cool in Texas if you could run both.

If I were planning on travelling any where that it's hot in summer, I would only buy an RV with two AC units. If you can only get one AC, I would hold out for a 15K unit. How well your RV is insulated will also factor into the equation.


2013 Newmar Canyon Star 3940 - 2004 Toyota Tacoma
Options: 5 Star Tune, Front Roadmaster Sway Bar, Rear CHF, Blue OX Tiger Trac, Blue OX TruCenter, RVIbrake2
JerryP is offline   Reply With Quote
Old 12-02-2018, 04:29 AM   #10
Senior Member
Join Date: Oct 2016
Location: Rendon, Texas
Posts: 536
Unless you will not be traveling during the summer months, you will find that a single AC unit will not be adequate to keep the RV cool, especially during the daytime hours.
May your smiles be many and the miles be plenty.

Karen & Allen Van Zandt
txcpl is offline   Reply With Quote
Old 12-02-2018, 05:44 AM   #11
Senior Member
ej1144's Avatar
Join Date: Aug 2017
Posts: 232
2000 btu difference is really not that bad. But the more the better I guess.
ej1144 is offline   Reply With Quote
Old 12-02-2018, 06:25 AM   #12
Senior Member
Join Date: Aug 2017
Posts: 1,260
Get the one with the 15k unit . At 31' , you are almost at the point where the coaches will have 2 - 13k units.
1993 Tiffin Allegro Bay 32'
Soppy is offline   Reply With Quote
Old 12-02-2018, 07:15 AM   #13
Senior Member
A32Deuce's Avatar
Join Date: Jul 2012
Posts: 1,668
We have a 31ft class c. White in color, awnings at all side Windows and a heavy outside white windshield cover. Gets pretty warm around here in the summer and our 13500 will cool it. We keep it at 72 during the day and most times we are in direct Sun because of sat tv.
A32Deuce is online now   Reply With Quote
Old 12-02-2018, 08:35 AM   #14
Senior Member
Join Date: Feb 2012
Location: Tucson
Posts: 319
Wink Go bigger...

I doubt you will be happy with a 31' coach and only one 13K AC. It gets hot just about everywhere in the summer. Keep in mind that a decent coach with enough AC is only going to drop the ambient temperature about 20 degrees. A 31' coach with just 13K is going to be miserable.

Our 24' Class is very well built/insulated and the nonducted 13,500 BTU AC works well but long and hard when the temps approach 100. Using an oscillating DC
fan helps a lot to move the cold air around and as mentioned a screen/sunshade on the windshield also makes a big difference. Also on a Class C hang some sort of barrier material behind the cab to keep the hot air out of the living area of the coach.

Not sure I would ever even consider buying a 31' coach where the manufacturer went so cheap on such a critical system... makes you wonder what else they skimped on.


2012 Nexus Phantom 23P Class C
Ford E-350 Chassis 6.8L V-10 w/5 speed trans w/tow haul mode, 55 gal fuel tank
USCG Licensed Master 100 Ton (Retired)
Capt Steve is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Intellitec Issues Not Enough AC BTU's RyanGGG Class A Motorhome Discussions 12 09-20-2018 01:23 PM
Two 15,000 BTU ACs vs two 13,500 BTU ACs... go6car RV Systems & Appliances 5 01-24-2015 09:36 AM
15,000 btu a/c in jayco tcopeland Class C Motorhome Discussions 2 03-30-2011 07:20 PM
Anyone replace a 13,500 btu a/c with 15,000? Ed S Monaco Owner's Forum 24 02-09-2010 11:18 PM
13.5k btu or 15k btu air condtioning PClayton Travel Trailer Discussion 2 07-19-2005 08:17 AM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:41 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.