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Thank you all for the great info.  I will fill the front cap with insulation and see if this helps.  If anyone has any other suggestions or ideas please feel free to let me know.  Like I said we love this coach and don't want to find another one.  Sad to hear that it is poorly insulated and I hope to find a way to make it more comfortable when we want to use it in the summer months.  I'm going out of town next week when I get back I will pull it outside in direct sun with the exterior window coverings on and front cap full of insulation and see if that all helps any and I will keep you posted.  I still question why the air vent above the vanity sink has no air coming out of it unless I close all vents then I can get it to start blowing out of it.  I feel like that also could be an issue but only for the rear because now that the RV shop separated the front and rear by install a foam block with hvac tape to keep them separate.  Also before driving it the other day it was reading 74 inside and we drove it 1.5 hours down the interstate to get back home with the gen running and both AC units and the front dash air full blast it was 80 degrees when we arrived home.  You would think while driving the outside would be cooled down from the air flow and the coach would remain cool.

I attached some pictures of the vents and covers that my wife found from the previous owners we didn't know about.  First picture is the vent above the sink that I can only get air to flow out of it by closing all other vents.
Technical Support / Re: Penguin II "Load Shed" wiring question
« Last post by Steve Huber Co-Admin on July 07, 2024, 10:04:30 PM »
It's not clear from your post (at least to me) of the old AC and new AC have the same control board hookups or not. If not, suggest you call Dometic. They are very good about assisting in new hookups.
Technical Support / Re: AC dead
« Last post by Steve Huber Co-Admin on July 07, 2024, 09:58:10 PM »
If this is occurring on a single AC, you may have s frozen compressor.
Apply silicon or lexel around the marker lights from the outside to prevent water leaks.
Technical Support / Re: Penguin II "Load Shed" wiring question
« Last post by Bill Lampkin on July 07, 2024, 08:18:52 PM »
Had to cut the yellow wire on our front AC to get it to run. Interested to see where this thread goes. Nice to know I'm not alone with this issue
Technical Support / AC dead
« Last post by Greg Ross on July 07, 2024, 08:17:50 PM »
I was cooling the coach in preperation for leaving on a trip when the AC died, no power to thermostats and 15 Amp fuse in toilet room blows as soon as I replaced the fuse (short) I installed a 20 Amp fuse and it lasted about 10 seconds.
I disconnected the power at both ACs on roof and still short circuit,
Replaced relay behind wood panel (why would you need a relay here?) sttill dead short.
There must be a control of some kind which is common to both ACs where I think the problem is but I do not know where it is,anyone with any ideas?
2008 Contessa
I also have an '06 Monterey and have the same issues.  I have improved the situation slightly by adding insulation.  As you have noticed, the front cap is not insulated.  I stuffed the front cap full of fiberglass batting when I replaced the original TV.  I also added 1 inch block foam insulation in the back of all the cabinets in the front cabin (my wife was complaining that the food in the cabinets was getting too hot).  The area above the engine below the floor in the bedroom is also poorly insulated as well as the rear cap area behind the bedroom closet.  Bottom line is, the coach is poorly insulated and the slide rooms add additional walls that are exposed to exterior heat.  Everything you can do to improve the insulation and minimize heat transfer will help, but if you are already able to keep the interior temperature down to 80 when it is 100 outside, I'd say you are doing very well.  The Monterey is my third diesel pusher.  The other two were much better at maintaining temperature, but they also did not have 4 slides.  I guess it is a bit of a tradeoff. 
We store the coach in our garage.  I just went out and checked the temps with my digital meat probe.  Outside the coach inside my garage where its kept its 88 degrees I have 47 degrees coming out of the vents the temp in the coach is at 75 and that is what I have the 2 thermostats set at yesterday.  After reading the replies my wife told me that we do have the outdoor shades that snap over the front and front side windows as well as over all the tires.  I will have to get it out in direct sun and install those to see if that helps.  We have those from the previous owners but Have never used them before so maybe that will help. So is it normal or common in all coaches that if its 100 outside you can only expect 80 inside?  I was told that some coaches were poorly insulated and wasn't sure if my was one of those.  We love our Beaver the quality is amazing but as I said its our first and don't have anything to compare it to or what to expect.  We really want to get it to where its comfortable inside in the summertime and not have to be hot and sweaty while trying to enjoy it. 

All the windows were tinted when we bought the coach from the previous owner not sure if they were tinted at the factory or them but all are tined and as I said I had the windshield tinted.

Also yes when I were camping I do set the fan to HI mode as it does help a little. 

I also noticed that above the front seats where the tv is and the cabinet where my stereo and satellite reciever are located you can see the daylight through the upper marker lights and there is a ton of open space and no insulation there.  I was wondering if I took the tv out and shoved a bunch of insulation up in there if anyone else had done that or if that would help?

It' reported that using a reflective sheet inside behind an exterior window can cause damage to the window seal, etc. due to the resultant heat build -up between the window and the sheet. Forgot to mention in previous post; be sure to have the fan speed set on high. Have you measured the temp coming out of each heat pump? It should be 20 degrees or more below outside ambient.
Our coach came from one of its prior owners equipped with exterior snap-on shades for the windshield, the left-side driver's window, and the first two right-side passenger's windows.  Soon after we unload the 45-foot traveling suitcase in Yuma (that would be our coach), I get out a ladder and install these shades on the snaps.  Also, outside the windshield and entry door window but under the exterior snap-on shades I slide in a piece of reflective-bubble insulating foil precut to fit the windows.  The snap-on shades hold the reflective-bubble insulating foil in place.  The largest heat source, direct sun through the front windshield, is immediately shut off and is left outside the windshield and window.
I have seen coaches parked around Quartzsite, Yuma, Phoenix, etc., with snap-on shades on all their windows.
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