firedude
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The 'ol firedude is used to being on the coast and places cool. Right now helping my dad following my moms passing a couple months back. it's pretty hot here in the summer. Usually in the 100's and humidity around the high teens to low 20's. Lately the past few days the humidity has been around 45+%. A/c didn't seem to be as affective. Someone suggested cracking a vent just a wee bit. I did and the temps seemed to drop about 7 degrees inside so far.
Do you who live/camp in the high humidity leave a vent or window cracked for air movement/circulation? seems reasonable as to allow any warm air to be pushed out as long as it's a very small opening so as not to let out all the cool air lol! Seems if I keep it somewhat air tight it gets stuffy and doesn't cool as well in the high humidities. With the norm in the upper teens to ow 20's it doesn't seem to be a problem. Man I've been spoiled by the coast and pacific northwest!
Tony
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Kajtek1
CA
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Joined: 12/04/2002
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When you take a steamy shower and let the air circulate inside the house, usually the smoke detector will go off. You should know that already? 
AC dries the air. You don't want the moisture to enter you rig voluntary? Our rigs are not that well sealed, so don't worry about breathing air. Let the moisture stay outside.
One of the problem you might experience is that AC compressor working at 100% duty might over-freeze the coils. Don't know if RV AC has defrosting mode, so good idea would be turn it off every couple of houris for about 15 minutes.
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trnfla
Tampa
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we keep all the vents and windows closed here in steamy FL. The a/c takes time to remove the moisture from the air.
Have a great time camping,
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CSpenceFLY
Macon,Ga
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I leave the bathroom vent cracked. I figure heat rises so why not give it a place to go.
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Oakman
MO
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We open the vent in the highest part of the trailer (bedroom) about an inch and yes, it helps considerably in places with high humidity.
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Ray,IN
IN, USA
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The single best thing you can do to keep your RV cool in high temperatures is to run your A/C constantly, set at the desired temperature. This allows it to maintain temperature/humidity rather than playing catch-up all day.
Opening windows at night just allows high humidity to invade your RV, where furniture, bedding, etc; soak it up. Now your A/C must work doubly hard to obtain the desired results, remove it again.
Keep in mind an air conditioner is actually a large de-humidifier. Cold air is a byproduct of what the inventor of a de-humidifier was attempting to perform.
That said, this is why "swamp coolers"(add moisture) work well in low humidity(deserts) but not in the Midwest, where the humidity averages near 70% in summer. Air conditioners (remove moisture), therefore do not perform well in desert climates, but work very well in high humidity climates.
Opening your RV to outside air only increases the workload on your air conditioner. RV air conditioners re-circulate interior air. They are designed to operate with a temperature differential of 20* between intake and discharge air. This means as your interior temperature drops, so does the discharge air temperature from the A/C unit. Of course there are limits.
BTW, right now Indianapolis says the temperature is 71*F, humidity 91%.
* This post was
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MotherOwl
Northwest Louisiana (ArkLaTex)
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I live in Louisiana where it is very hot and VERY humid during the summer. I don't open a vent nor have I ever heard of doing so. In fact, I always put those foam pillows into my vent openings. If you have no shade, it will also help to put those reflective covers over your skylights and windows facing the sun.
Stay cool, firedude. I'm not a fulltimer, but I always enjoy your posts.
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butkus21
On Galveston Bay
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Joined: 02/22/2004
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I tried opening one of the vent's and it felt like the humidity increased inside the trailer. I run both a/c's round the clock, leave the shades (blinds) closed during the hottest part of the day and never run the ceiling fan since it seems to draw the heat down. I do have thermal pane windows and more insulation in this trailer, but its still a battle. I'm not looking forward to my next light bill, lol. If you have some shade to park under that will also help. Good luck!
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hitchup
Fulltiming in Madison, VA
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We also always keep our vents shut and skylights covered so the 2 AC's can do their job. But I've started running a table fan to keep air circulating in any room we're occupying, so I can set the AC temps a little higher as the heat outside increases and keeps AC's running more frequently.
When we had our Open Road, the one 15k AC would freeze up. Suggestion from dealer was to run the Fan on HI rather than AUTO. That meant the fan was on all the time, not just when AC kicked on. It wouldn't keep us much cooler, but did prevent freezeups. We haven't experienced that problem with our Suite.
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firedude
On the road
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OK, first of all sylight ect were already covered, reflectix in the windows on the sun side and all the other tricks. it's pretty hot where I am (not by choice lol).
Now, I tried something here and was actually amazed. I cracked one window ever so slightly, maybe 1/8th of an inch or so. It made a huge difference. Temps are now staying at or near where I have the thermostat set at what a big difference it made! A big gap between inside and out unlike yesterday evening. I figure as the inside tries to heat up the warmer air has to escape a little in an exchange manner if you would. Either way cracking that one vent made all the difference in the world AND I'm only using my portable a/c too! Go figure. Incidentally my inside humidity always runs pretty consistent and always much lower than outside in high humidity areas. Thanks for all the input gang!
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