speediq99
Arizona
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Joined: 01/17/2004
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I recently added a Turbo Maxx to the back of my 32 Ft Class C. I was hoping to be able to make the inside temp match the outside temperature in the summer. To my surprise and even after running for hrs, my outside temp during the day isually 7-9 degrees warmer no matter how long and hard I run the thing. Is this what everyone experiences ?
I have tons of sliding windows. All of them are opened.
I usually run the Turbo Maxx at full speed exhausting the air from the unit. You can barely feel anything that way. I was hoping that over time, it would bring enough outside air in that things will equalize but it isn't so.
When you run the unit blowing outside air in, you do feel the breeze (not much) when you are directly below it. Is this a better way to cool the inside ? Should I just exhaust for a few minutes to get the hot air on top out and reverse ?
Mike
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davepcpowernet
Battle Ground, WA
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Joined: 06/04/2006
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In my C I have two fans, one in the forward vent and one in the rear over the bed. To exhaust the warm air I run the rear fan exhausting the air and the front blowing in and with no windows open. For maintaining temperature, I usually open the door or a couple of windows and put both fans on exhausting. (At least if the outside temp. is comfortable, if not, run the AC) Until I installed the second fan I had the same problem as you do. Now at least with two, I can keep it within 2 or 3 degrees of the outside temp. when the sun is shining on the outside of the unit.
Dave
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Polishnurse
Schodack, NY
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Joined: 03/13/2007
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Well Mike, you in Arizona, I will assume you are NOT in the shade of an old oak tree but sitting there in bright sun cooking the rig and everyone inside. The fan is most like working or you would be somewhat well done by now. But to make a long story short, I believe you are feeling and reading (on the thermometer) what can be referred to as radiant heating. The walls and ceiling are getting so hot from being in the sun, the insulation is also heating up and is acting like radiant heater. Unless you get some AC running I think you going to have to grin and bear it. I would just put it on high and leave it there. If there is a screen before around the fan, you may want to remove it since this also restrict the air going thru the fan.
Just a note from the engineering side, you can suck air thru a screen but you can't blow air out a screen. Which is not entirely true but it will act like a dam and cut the air flow down quite a bit. Good Luck and happy cooling. Bill
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speediq99
Arizona
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Joined: 01/17/2004
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Thanks Bill,
I am doing this up a 8000 ft. The outside temp was 70, inside 80. There is no point in running any kind of fan in 110 degree weather.
I agree w/ you on the screen but if I remove it, specially at night, who knows what kind of creatures will try to get in. Has anyone used the Turbo Maxx w/o screens ? Any issues w/ junk coming in ?
Mike
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speediq99
Arizona
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Joined: 01/17/2004
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Thanks Dave,
I may try to install another unit in the front. At $200 a piece, I just wanted to make sure that it would make a difference.
I am not too thrilled with the amount of air (in or out) that my current Turbo Maxx is putting out. A regular small/portable household fan on slow setting moves more wind that the roof mounted Turbo Maxx at high.
Mike
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jcamp123
Putnum County, New York
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Joined: 11/19/2005
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First of all close all your windows except the one furthest from the fan. Try that and see how it works.
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Dusty R
Charlotte Michigan 48813
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Joined: 04/05/2003
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Run the Turbo Maxx on exhust, open only one window in the front of and on the side away from the sun on your MH. Then you will be able to feel a breeze flowing threw the MH. The Turbo Maxx is a nice unit but it can't move enough air to put air in every window so the air will only come in the windows nearest to the fan, and the rest of your MH will be hot.
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ron.dittmer
Near Chicago
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Joined: 02/26/2007
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jcamp123 wrote:First of all close all your windows except the one furthest from the fan. Try that and see how it works. Bingo!
You need flow-thru ventilation. With all the windows open, the air is pasing through the RV from the closest window to the fans, leaving the rest of the interior air stagnent. Pick a window farthest from the fans, and on the shady/cool side of the RV.
It does sound like you have a dark roof and minimal roof insulation. What might help is coating the roof with an "Appropriate" white paint or similar product. If your roof is supposed to be white, maybe it needs only a good scrubbing or power washing to get the white back. A coating of tree sap will turn the roof very dark, therefore absorbing the sun's heat.
Adding: As stated below....
A sunshade covering the windshield helps a whole lot. We bought one from Wal-Mart, made to fit a Ford van, and it does fit perfectly. It protects the dash board and front seating from sun damage, and also adds a lot of quick privacy without drawing the cab curtians.
Sun beaming inside is obviously counter-productive, so awnings are very useful.
* This post was
edited 07/28/08 11:14am by ron.dittmer *
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rvten
Crossville,TN
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Joined: 11/30/2000
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Keep the dark shades down. THis will keep a lot of heat from coming throught the glass. Close off the cab area. Couple of 12" fans to move the air around.
Dark FBP is not a good idea. We have it and it gets up into the 90's in here real fast.
Tom & Bonnie
Crossville, TN.
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Class C passed Class A owner
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YC 1
Yuba City Calif.
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Joined: 01/11/2005
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Open only the farthest window from the fan and you should feel a breeze through it. If not your fan is inefficient or spinning on the shaft. We have two fans. We actually changed the bathroom noisy model out for a fantastic fan and with two of them can make the curtains stand out.
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