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Old 07-10-2006, 12:41 PM   #15
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Originally Posted by Foiled Again
One thing that few people seem to know is that you can actually collapse if you go from a very cold air conditioned room to a much higher temperature. In fact you place extreme stress on your heart if the temperature differential is more than 20 degrees.
Paula
Now this one I have not heard before? My current inside office temperature a very comfy 76 degree.... outside temperature in the Arizona 109 forecast today..wheeew.... if we followed this rule in AZ everyone would be a little gamy sitting in their offices……
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Old 07-10-2006, 02:30 PM   #16
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Man I love this place....

From floor fans to potential heart problems, I love this place

Lately we've been camping on the Texas Coast and now have a new routine for the summer months. We spend the day on the beach and no matter how hot our AS feels, it so much coooooooler than the beach nobody complains.

One dealer told me that if your AC is cooling (or removing the heat) your TT by 20 degrees you're doing well. That's about what we get so I guess I'll leave this one alone.

Mitch
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Old 07-10-2006, 02:40 PM   #17
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Quote:
Originally Posted by Foiled Again
One thing that few people seem to know is that you can actually collapse if you go from a very cold air conditioned room to a much higher temperature. In fact you place extreme stress on your heart if the temperature differential is more than 20 degrees.
Certainly you are talking about core body temperature, not room temperature. Otherwise how would any of us living in snowy regions survive winter?

Shari
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Old 07-10-2006, 04:28 PM   #18
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It's Twue, It's Twue!

Arizona and dry heat really do make a difference. One day in Virginia we had 3 people collapse within 20 minutes outside of a local bank because of the ABRUPT temperature change. They later adjusted the lobby temperature to be higher relative to the rest of the building. Of course hitting 99% humidity could be as much a contributing factor as hitting 110 degrees. My mom's cardiologist warned her about running outside without allowing herself a few moments to adjust (Ye gods, did my depression raised mother HATE standing in the doorway "air conditioning the great outdoors"... and I must confess I chuckled. )

If you're healthy and young it's not so traumatic, but if you're older, heavier or have any known heart problems take it easy going from cold to hot. Apparently your body adjusts much better going into a cold room from a hot area.

Paula
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Old 07-10-2006, 04:49 PM   #19
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C'mon now.

Whether you are going in or out, a temperature differential is a temperature differential. Hot out, hot in or cold out cold in you are crossing the local temperature gradient.

By your logic, going from a snowy, blowy parking lot at twenty degrees below zero in Minnesota to a typically overheated office lobby or mall at eighty-two degrees or so should be the risk equivalent of Evel Kneivel's Snake River Canyon jump. Jeez, a hundred degree differential in fifteen feet!

I have never seen anyone express anything but relief at getting inside on a frosty day and certainly have not seen the old folks stacked like cordwood on the slushy floormats by the door.

Without some scientific reference to the danger, I'm going to have to but this one on the half-baked shelf for now.

That is not to say that extreme environmental conditions, high or low, cannot be deadly. But the idea that the danger aries from the delta just does not make sense.

I have, often, had the experience of steping out of a too-cold-for-comfort space directly into desert sun and heat, sticky tropical conditions or man-made hot boxes (marine engine rooms) where the differential was forty degrees at least. In each case, the effect is that I immediately begin to sweat. Not profusely at first, just a light sheen on face and exposed skin and I can feel a capillary flush. There is no instant rise in heartrate, feeling of effort or labor. That comes later, from a half hour to hours later depending on the conditions and expenditure of energy. I am an older guy now, and the effect remains the same as when i was younger and lighter.
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Old 07-10-2006, 08:47 PM   #20
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Thank You to all who have replied. From what you all have stated I will try a small fan and put in the bedroom first and see if this helps before changing a/c units. I have painted the roof white in hopes to help with this summers vacation compared to last years but it did not solve the problem.Also from reading some of the posts I don`t know for sure if a 15k btu a/c will help since my current a/c is operating within the specs of the 15-20 deg drop of the intake air temp. I also use to have this problem with my 31ft trailer . Well on my next trip I will see how the fan or fans work and then look at changing the existing a/c or adding another.Again thanks for the replies. Davis
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Old 07-10-2006, 10:12 PM   #21
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"One thing that few people seem to know is that you can actually collapse if you go from a very cold air conditioned room to a much higher temperature. In fact you place extreme stress on your heart if the temperature differential is more than 20 degrees."

I have to briefly (only VERY briefly) put on my cardiologist hat here for a reply: The problem with change of location into a very hot environment is peripheral vasodilataion (blood vessels in skin and elsewhere dilate, as they should, in response to hot temperatures). This lowers blood pressure, and "collapse" could follow. The heart is an innocent bystander and not the culprit, and not in particular danger.

I've followed this thread with personal interest. I used my A/C at the International rally in Salem with outside temp 103 two weeks ago. It was the first time I'd had the A/C turned on, and I had no idea what to expect. Here's my indoor/outdoor temp display. I'm very happy with my A/C!

Mark
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Old 07-10-2006, 11:03 PM   #22
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My 94 34' would not keep the bedroom cool in the heat of the day. I put two new a/c units in the first replaced the one in the galley the other went in the fan opening in the rear bedroom. I also put in a dedicated circuit for the bedroom unit with a 20 amp circuit breaker. This unit plugs into the 20 amp circuit in the campground, along with the trailer using the 30 amp. This gives me the choice of using both or either of the units. With both units running it keeps the trailer cool in the hottest temps. I wired the units and put in the drain line, Camping world installed the a/cs.
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Old 07-11-2006, 02:56 AM   #23
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Quote:
Originally Posted by Tarheel
My 94 34' would not keep the bedroom cool in the heat of the day. I put two new a/c units in the first replaced the one in the galley the other went in the fan opening in the rear bedroom. I also put in a dedicated circuit for the bedroom unit with a 20 amp circuit breaker. This unit plugs into the 20 amp circuit in the campground, along with the trailer using the 30 amp. This gives me the choice of using both or either of the units. With both units running it keeps the trailer cool in the hottest temps. I wired the units and put in the drain line, Camping world installed the a/cs.
IMHO, this is the best way to add a second A/C unit. It sure beats ripping apart a lot of the trailer to re-wire for 50 amp service, not to mantion the expense involved.
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