Need info: Ultra Kool Air Conditioner - Page 2 - Fiberglass RV


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Old 06-26-2012, 10:51 AM   #15
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It is basically a dehumidifier..., you feel cooler with less moisture in the air.
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Old 06-26-2012, 11:17 AM   #16
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I tested the unit. It blow ice cold air out the front and "cool" air out the back. See the pics . Its does say Room Air Conditioner on the model tag. You can make your own mind up as to how this works, but all I know is that it works. And that's all I'm after on a hot day.
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Old 06-26-2012, 02:54 PM   #17
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Originally Posted by lespnd View Post
This Ultra Kool Air conditioner is in fact a recirculation unit made by Kysor. (business has changed hands) This is how it works. Warm/Hot air is pulled in from the front (room), then it is drawn over the cooling fins, and then blows the cool air back into the room. There is no fresh air setting. I would need to draw fresh in (cracking a window) once the air is cooled down. As it was explained to me by the mfg, it is exactly the same as a car system. The ac unit in a car works more efficiently in recirculation mode to cool the car down. If you wish to have fresh air, turn it to fresh air mode which opens the intake vent from outside. The air conditioner must then cool down the hot air from outside making it less efficient but at least you have fresh air. So, the answer is, this unit does not need to be vented as it "Does not produce the heat" an window AC does. I have yet to test this unit as it has been quite nice here in southern Ontario the past few days, but I plan to this coming weekend. I will let you know how it goes.
There is one MAJOR difference between this and a car unit. The car's a/c pumps the heat to the outside world via the condensor coils mounted in front of the radiator. When on "recirc" it takes the already-cool air from inside the car and extracts even more heat from it. However that heat still has to "be put somewhere" - outside the car via the condensor again.

In this case, if there is NO hot air exhaust then I am a loss to understand how it does anything except consume power and thus CREATE more heat

Where does it put the heat?

So far in this thread it seems that it puts it back into the room. It will also consume energy, which creates even more heat.

Is it a perpetual motion machine?

Please help me understand.....
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Old 06-26-2012, 05:23 PM   #18
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It is basically a dehumidifier..., you feel cooler with less moisture in the air.
This sounds about right. When the dehumidifier runs in our basement for a long time, it gets hot down there, as all of the energy that it consumes is changed into heat via one method or another.
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Old 06-27-2012, 06:22 AM   #19
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Correction. After testing this unit further I discovered it does in fact blow warm air out the back. Hence the need to exhaust. I'm trying to figure out a nice way to do this for my location. Also , luckily the cooling unit sits in a dish that catches the condensate and empties by a hole out the back which can be emptied by a hole through the floor. Sorry for the confusion, although I was somewhat hopeful what I was told was possible with this unit. Not so.
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Old 06-30-2012, 10:54 PM   #20
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When I was younger, I wondered why a room could not be cooled by leaving the refrigerator door open. Similar problem.....
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Old 07-11-2012, 09:56 AM   #21
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Here is the AC unit installed in the front of the Boler behind the tongue box. Intake and exhaust are going through an access hatch. Condensate hose through the floor. Seems to be working quite good. I may try to separate the exhaust and intake a little better while hatch is open.
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Old 09-05-2012, 09:10 AM   #22
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AC stopped working - replaced with Cool Cat

My "used" air conditioner gave up the ghost in August on the hottest day (of course). So we decided to find a replacement and the "Cool cat" came up as a possible replacement. They are used in T@B trailers among others. We called Dometic and found them to be quite expensive. $800 CAN + $250 install kit. And then, just by shear luck we found a briefly used one locally that was more reasonably priced. I viewed it and although I found it to be quite large, we decided to go ahead with it. The install was done by a local RV repair shop in the front where the old one was. We made a cover to keep out any rain and so on. The hole required in the front is quite large compared to the smaller unit but is necessary for proper function. We used it this past weekend on a camping trip. During the day we used the AC and at night it dipped down to 12 degrees C. The Heat Pump was then used for heating. I must admit we love its performance although it may be a little overkill in terms of power. 11000 btu. Here is a pic from the outside.
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Old 09-05-2012, 11:21 AM   #23
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I had a CoolCat in my T@da, because it was over sized, it would short cycle, i.e., on for a short period, off and then repeat. It never ran long enough to properly remove humidity until I installed a digital thermostat that I could program on/off limits.
The other issue was condensate running on floor unless you tilted the unit/trailer properly.
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Old 09-05-2012, 12:02 PM   #24
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noel,
You have been a busy person, 2 replacements in 90 days. Hopefully you will have better luck with cool cat, just try to get a digital thermostat.
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Old 09-05-2012, 12:08 PM   #25
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Hi Jim
The thermostat that was installed is an analog one. i agree a digital one would be better to set limits. I have read about condensate leaking as well, so i made sure the condensate tray on the bottom is tilted towards the front of the trailer enough to properly drain the tray. hopefully this will address any possible floods issues.
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Old 09-05-2012, 12:10 PM   #26
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Hi Jim
Actually it was the same unit I was trying to make it work. So far I am glad we got the cool cat. I'm sure I can acquire a dig stat without too much trouble. Thanks for the input. much appreciated.
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