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Old 02-18-2007, 06:43 PM   #1
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Rooftop AC in place of escape hatches?

I was wondering if anyone has ever used their roof hatches as a spot for either roof ac or fantastik fans?

If so, how did you get them to fit?

thanks

shawn
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Old 02-18-2007, 07:45 PM   #2
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I often wondered about the same thing... Just eye-balling it, it looks as though they're made to order for a roof mounted AC unit
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Old 02-18-2007, 09:53 PM   #3
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The way it looks to me, is that the emergency roof top opening is around 18-20 inches, where the roof top is meant for 14 inches.
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Old 02-18-2007, 10:32 PM   #4
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Roof vents

Most buses roof hatches are larger than size required for a AC unit. The hole needed for a fan or AC unit is 14 1/8 inch. Covering an existing hole usually requires some roof work and some method of reducing the hatch hole. Most roof AC units use long bolts to clamp unit to the roof with no fasteners connected to roof. Carrier units are the most expensive but seem to me to be the best of the AC units. Frank
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Old 02-19-2007, 10:40 AM   #5
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Wow, it sure seems a waste not to use those holes...
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Old 02-19-2007, 10:59 AM   #6
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Better that the holes are too big, if I had escape hatches I would definetly make some adapters to use them for A/C. With all that space around it you could make some really nice trim.
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Old 02-19-2007, 11:25 AM   #7
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I was thinking along the same line... its there, might as well use it...
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Old 02-19-2007, 12:49 PM   #8
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Roof vent hole

I think the most important consideration for roof AC is placement. My Crown bus has 2 roof AC units and a center fantastic vent. One AC is at thr very front of the bus to allow some creature comfort while traveling down the hiway. I think I'm also gonna make a curtain to restrict the cooling air to be a the most value to the driver. I mostly travel alone. My bus is not yet insulated so heat and cooling are not great. My plan is to drill many 1/2 inch holes and inject insta foam with care. After foam has stopped expanding, carpet will be glued to ceiling, and with wood strips screwed in place. Frank
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Old 02-19-2007, 01:00 PM   #9
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I was also wondering about carpeting my ceiling in hopes of increasing the R value, I'm just a little concerned about the glue not being able to handle however hot the roof/ceiling may get
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Old 02-19-2007, 01:17 PM   #10
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I think the best benefit of the carpeting is the sound deadening you will get from it.
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