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Nick Badame Refrig/ACC
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How many roof AC units do I need?
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Topic: How many roof AC units do I need? (Read 6088 times)
86neoplan
Newbie
Posts: 45
How many roof AC units do I need?
«
on:
May 31, 2006, 04:19:55 PM »
as most of you know, My little coach is only 26 foot long, and thats bumper to bumper...
I am trying to figure out how many roof airs I need.
Any suggestions?
shawn
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Proud single custodial dad to a wonderful 14 year old son, Owner of a 1986 Neoplan 26' transit Bus AN408, Great weekender...Lots of work to come on this bus, can't wait to get her done! 8.2L with a Allison AT545...
coachcrazy
Jr. Member
Posts: 57
Re: How many roof AC units do I need?
«
Reply #1 on:
May 31, 2006, 04:25:52 PM »
last year i rented a 28ft class C and it had one 15,000 btu roof unit and that made the bus plenty cold.
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Ross
Sr. Member
Posts: 406
Re: How many roof AC units do I need?
«
Reply #2 on:
May 31, 2006, 04:44:19 PM »
I went with 3 roof units...15K each. Basement was quite a bit more money and I didn't want to raise the roof. If you go basement, you should plan on a roof raise to accomodate duct work. This being my first, I wanted to keep it simple....and it still took 3 years to build.
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Dallas
Guest
Re: How many roof AC units do I need?
«
Reply #3 on:
May 31, 2006, 05:20:31 PM »
Cat and I saw a 45' Dutch Star last fall that had 6 roof airs on it.
Let's see, 45 divided by 6 = 7.5' per A/C
So using that we can surmise that 26 divided by 7.5 =3.4666666666666666666666666666667 A/C's.
So now we can round it up, since obviously the Dutch Star, being more expensive has better insulation
We'll call it 4 roof airs.
That should allow you to keep the temperature about 34° in Death Valley in July.
It'll also help keep the beer a lot cooler so you don't have to work the fridge so hard.
Of course, you'l probably need 2 12.5 KW diesel gensets, but Hey, who's counting!
Dallas
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TomC
Hero Member
Posts: 9255
Re: How many roof AC units do I need?
«
Reply #4 on:
May 31, 2006, 10:18:06 PM »
Depending on if you're going to have an engine run dash air. If so, one roof air would be enough. If you don't have the dash air, then one in the middle and one near the front. Good Luck, TomC
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Tom & Donna Christman. 1985 Kenworth 40ft Super C with garage. '77 AMGeneral 10240B; 8V-71TATAIC V730.
FloridaCliff
Hero Member
Posts: 2465
"The Mighty GMC"
Re: How many roof AC units do I need?
«
Reply #5 on:
June 01, 2006, 05:05:11 AM »
Depends!
If you are keeping all the glass you will probably want two to be safe.
There is a ton of cooling/heat loss when moving.
If on the other hand you are covering the bulk of the windows I would go with one 15K.
A 13.5 would freeze me out in my 27' Class C when not moving, but just not enough when moving, the 15K may do the trick if near the front.
Remember that the driver is in the discomfort zone with all that glass and hot/cold air on the front when your moving.
Best of Luck,
Cliff
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1975 GMC P8M4905A-1160 North Central Florida
"There are basically two types of people. People who accomplish things, and people who claim to have accomplished things. The first group is less crowded."
Mark Twain
Danny
Sr. Member
Posts: 281
87' MCI 102A3 - getting there...
Re: How many roof AC units do I need?
«
Reply #6 on:
June 01, 2006, 06:33:09 PM »
As everything else, it would depend on what your plans are for the bus. I do not like hot weather - so, I want to travel in temps that are more reasonable. Considering this might help you make the call...
Danny
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I have heard it said, "life comes at you fast". I didn't know it would be in the shape of a bus :-)
plyonsMC9
Global Moderator
Hero Member
Posts: 1455
Big Wheels Turnin'
Re: How many roof AC units do I need?
«
Reply #7 on:
June 01, 2006, 07:54:36 PM »
Hi there '86,
I had a class A, 34 foot. Two roof airs. Insulation was pretty good. White roof.
We about had heat stroke in Blyth CA, when the temps passed 120 degrees. Had both roof airs and the in-dash A/C going as well.
Ever since then, I've been a big fan of more rather than less A/C units. On our 40' bus, we have 3. And I've never regretted having more a/c units. If you aren't using it, then turn it off.
If you need it, it's there.
OK, that's my 2 cents.
Hope this helps - good luck with your decision.
Kind Regards, Phil
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Northern Arizona / 1983 - MC9, 1995 MCI DL3-45
tucsontattoo
Full Member
Posts: 141
1962 4106
Re: How many roof AC units do I need?
«
Reply #8 on:
June 01, 2006, 08:55:07 PM »
Four!
Tucson
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we do things three ways,good,fast or cheap. PICK TWO!
Danny
Sr. Member
Posts: 281
87' MCI 102A3 - getting there...
Re: How many roof AC units do I need?
«
Reply #9 on:
June 01, 2006, 09:23:04 PM »
I guess another way to put it is:
Depends on how hot is it outside and
How cold you want to be inside
Danny
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I have heard it said, "life comes at you fast". I didn't know it would be in the shape of a bus :-)
Len Silva
Hero Member
Posts: 4086
Angle Parked in a Parallel Universe
Re: How many roof AC units do I need?
«
Reply #10 on:
June 04, 2006, 07:07:02 PM »
I'm just going to set the GPS for 72 degrees and not worry about the air conditioners
Len
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Hand Made Gifts
Ignorance is only bliss to the ignorant.
Dallas
Guest
Re: How many roof AC units do I need?
«
Reply #11 on:
June 04, 2006, 07:28:23 PM »
Quote from: Len Silva on June 04, 2006, 07:07:02 PM
I'm just going to set the GPS for 72 degrees and not worry about the air conditioners
Len
Len,
Is that 72° altitude or rectitude?
Dallas
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How many roof AC units do I need?
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