Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  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 07-15-2015, 02:01 PM   #1
Senior Member/RVM #90
 
MSHappyCampers's Avatar


 
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 26,293
How efficient are your air conditioners?

We have two Dometic 13.5 units and during this hot weather we can only keep the inside temp about 15 degrees below outside. Is this pretty much normal, or do you get better performance? Thanks!
__________________

__________________
Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
MSHappyCampers is online now   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 07-15-2015, 02:06 PM   #2
Senior Member


 
Join Date: May 2013
Location: Chester, VA
Posts: 956
Ouch, we seem to do better with our basement air. We are cooling 36 footer and keep all day shades down and front window, driver and pass with outside sunscreens.
Normally we are 20-25 degrees cooler than out side air temp.
__________________

__________________
Tom and Gloria 2017 Newmar Ventana 4369, TOAD: 2015 GMC Canyon, Blue Ox Towbar, Baseplate and M&G Braking System
TomandGloria is offline   Reply With Quote
Old 07-15-2015, 02:14 PM   #3
Senior Member
 
sunset4k's Avatar
 
Holiday Rambler Owners Club
Join Date: Nov 2012
Posts: 304
We are about the same with Tom and Gloria. We have a basement air. Just returned from a two day trip here in Texas where day Temps were 102. Coach stayed at 80 during the day and mid 70's at night. Now the AC ran all day to keep it at 80!!!! We do have shades and the window reflector material which does help a lot.
__________________
Jerry & Diane Kovar
2006 HR Navigator 43pbq
2015 Jeep Wrangler/Blue Ox Avanta
sunset4k is offline   Reply With Quote
Old 07-15-2015, 02:59 PM   #4
Senior Member
 
Bad Bolt's Avatar
 
Join Date: Oct 2013
Posts: 598
Just returned from a trip to Alabama where temps were around mid 90's. The two air units were running all the time to keep it around 75 degrees inside. Start cooking with the oven or toaster oven, get the portable fan out and turn it on high....muggy.
__________________
1999 HR Endeavor 37WDS
Handicapped Lift Equiped
Bad Bolt is offline   Reply With Quote
Old 07-15-2015, 03:08 PM   #5
Senior Member
 
Join Date: Feb 2010
Posts: 4,492
Make sure thermostat not in direct air flow as it may cause compressor to cut off early.

Ours does this and a fan really helps change air flow
__________________
Tony & Lori
1989 Country Coach Savannah SE
TQ60 is offline   Reply With Quote
Old 07-15-2015, 03:27 PM   #6
Senior Member
 
336muffin's Avatar
 
Join Date: Apr 2011
Posts: 2,569
I have insulated our ceiling ducts and done some common sense mods and our coach remains very comfortable usually with ONE ac.

We have insulated our ENTIRE coach from end to end and top to bottom! This is where we improved our liveability of our coach. What brought us to do this was we spent three winters in single digit temps! I started findi g cold spots and from there we have a very efficent coach! Not to mention the quietest coach, especially while driving! We were at a Rally in Shawnee,Ok. With 105 temps and never lower than 99 at night with 30 amps with no problems! We are in a 2005 American Tradition 43ft. Full window awnings and Ceramic 30%tinting and outside windshield and front side window sun screens.
Don't blame the ACs for not keeping up.........blame the camper! I've helped a few of our friends do theirs and they still can't beleive the difference. Have fun
__________________
American Tradition 42R-Cadillac SRX Blue Ox Koni 5050XL MCD Scangauge D Samsung rf197
Fulltime since 2012
336muffin is offline   Reply With Quote
Old 07-15-2015, 04:20 PM   #7
Senior Member
 
SteveLevin's Avatar
 
Join Date: Feb 2010
Location: Sunnyvale, CA
Posts: 1,195
15 degrees delta seems at the low end of range, but much better than 25 would be unusual, IMO.

Ours cooled right on 20 degrees at the height of the day a few weeks ago up in Oregon where the outside temps were 102, we had zero shade, and inside up front it was 82 (although it was 74 in back, where we have only one window and it was away from the sun.

A huge amount of heat up front comes from the windshield, even though we have heavy curtains up. I am sure if we added exterior windshield covers, etc., it would make an enormous difference, but I haven't been inspired yet to spend that money, since we are far from full timers and I hope to upgrade coaches in the next few years.

Steve
__________________
The Green Machine -- 2000 Mountain High Coachworks Summit (Spartan chassis / Cummins ISC)
...and F-Troop: Fearghus, Fiona, and Frankie (Cairn Terriers)
SteveLevin is offline   Reply With Quote
Old 07-15-2015, 04:32 PM   #8
Senior Member/RVM #90
 
MSHappyCampers's Avatar


 
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 26,293
Quote:
Originally Posted by 336muffin View Post
I have insulated our ceiling ducts and done some common sense mods and our coach remains very comfortable usually with ONE ac.

We have insulated our ENTIRE coach from end to end and top to bottom! This is where we improved our liveability of our coach. What brought us to do this was we spent three winters in single digit temps! I started findi g cold spots and from there we have a very efficent coach! Not to mention the quietest coach, especially while driving! We were at a Rally in Shawnee,Ok. With 105 temps and never lower than 99 at night with 30 amps with no problems! We are in a 2005 American Tradition 43ft. Full window awnings and Ceramic 30%tinting and outside windshield and front side window sun screens.
Don't blame the ACs for not keeping up.........blame the camper! I've helped a few of our friends do theirs and they still can't beleive the difference. Have fun

Muffin, can you give me details on what you did? Thanks!
__________________
Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
MSHappyCampers is online now   Reply With Quote
Old 07-15-2015, 04:35 PM   #9
Senior Member/RVM #90
 
MSHappyCampers's Avatar


 
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 26,293
Quote:
Originally Posted by SteveLevin View Post
15 degrees delta seems at the low end of range, but much better than 25 would be unusual, IMO.

Ours cooled right on 20 degrees at the height of the day a few weeks ago up in Oregon where the outside temps were 102, we had zero shade, and inside up front it was 82 (although it was 74 in back, where we have only one window and it was away from the sun.

A huge amount of heat up front comes from the windshield, even though we have heavy curtains up. I am sure if we added exterior windshield covers, etc., it would make an enormous difference, but I haven't been inspired yet to spend that money, since we are far from full timers and I hope to upgrade coaches in the next few years.

Steve

20 degrees would be great! I bought a roll of the 4' Reflectix insulation from CW a while back and cut it to fit the inside of the windshield. I'm sure that helps a lot, but need a LOT more!
__________________
Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
MSHappyCampers is online now   Reply With Quote
Old 07-15-2015, 04:44 PM   #10
Senior Member
 
Join Date: Dec 2012
Posts: 200
Insulation

Quote:
Originally Posted by MSHappyCampers View Post
Muffin, can you give me details on what you did? Thanks!
X2 Would like to know also. Thanks
__________________
ChasL is online now   Reply With Quote
Old 07-15-2015, 04:48 PM   #11
Senior Member
 
Ford Super Duty Owner
Join Date: Apr 2012
Location: Austin, TX
Posts: 1,885
Quote:
Originally Posted by MSHappyCampers View Post
We have two Dometic 13.5 units and during this hot weather we can only keep the inside temp about 15 degrees below outside. Is this pretty much normal, or do you get better performance? Thanks!
The first place to start is with some basic maintenance:
1) Clean the filters
2) Remove the covers (roof and inside) - clean the coils. Cleaning the inside coil can be a little tricky, but you'd be surprised how much stuff builds up.

Check performance, they should do a 20 degree temperature drop compared to ambient (inlet vs outlet).

When it's 102 out, you may have to get selective about what you cool...

The ducted units are inherently less efficient and "waste" cooling (IMHO). They pass air through ducts that are essentially less insulated than non-ducted systems. My current RV has an option to essentially use the ducts or dump the AC at the unit - and this seems to work a bit better... but start with the basics.
__________________
cb1000rider is offline   Reply With Quote
Old 07-15-2015, 06:44 PM   #12
Senior Member
 
SteveLevin's Avatar
 
Join Date: Feb 2010
Location: Sunnyvale, CA
Posts: 1,195
I bought an inexpensive IR thermometer (on of those pistol grip looking things) and I use it all the time to check the fridge and a/c, etc. When it was 102 outside, the air coming out of the vents was at 68 degrees -- that said, it's definitely a great idea as mentioned to just "dump" air straight down if you can, especially when you are outside and not in the rig (since it is noisier then using the vents).

Steve
__________________
The Green Machine -- 2000 Mountain High Coachworks Summit (Spartan chassis / Cummins ISC)
...and F-Troop: Fearghus, Fiona, and Frankie (Cairn Terriers)
SteveLevin is offline   Reply With Quote
Old 07-15-2015, 08:26 PM   #13
Senior Member
 
CampingCajun's Avatar
 
Join Date: Jul 2014
Location: Lafayette, La.
Posts: 1,144
Try insulating your front cap behind the TV & cabinets. It will make a significant difference. I just did mine & wish I had done it sooner.
__________________
2011 40' Monaco Cayman PBQ ISC 360
2013 Jeep Wrangler Unlimited
CampingCajun is offline   Reply With Quote
Old 07-15-2015, 08:46 PM   #14
Senior Member
 
Join Date: May 2013
Location: San antonio, TX
Posts: 597
We camped out at Pleasant Harbor two days ago. With outside temperatures about 102 when we got there, we had low 70's inside. But we have 3 roof ACs with 15,000 Btus each.
__________________

__________________
USAF Retired
2000 Prevost Marathon H3-45
Towing 2006 Nissan Maxima
Peralko is offline   Reply With Quote
Reply

Tags
air conditioner



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
Losing air conditioners while running generator motohomo Winnebago Industries Owner's Forum 15 07-11-2015 07:21 AM
Freightliner chassis M2 Biz class truck/RV No rear AIR Bag AIR ! Chatham Freightliner Motorhome Chassis Forum 4 06-26-2015 07:18 AM
Air Horns stopped working TimSullivan iRV2.com General Discussion 10 01-11-2015 10:13 PM
Generator and running the Air Conditioners. kbhine Tiffin Motorhomes Owners Forum 9 06-23-2014 01:37 PM
2000 Fleetwood Bounder 36s Air Conditioners sclaryusa RV Systems & Appliances 1 05-31-2014 11:00 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:45 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.