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Stay Cool Without A/C.

Stay Cool Without A/C.
Recently I listened to a podcast from an Air Conditioning expert, which I didn't even know existed . It got my brain going about how to stay cool without using an air conditioner.

I have been trying some of his tips, plus some of my own ideas, and thought I'd share them here.

The results have been very successful, and at my house we now run our air conditioner for only brief periods of time throughout the day while the other tenants in our unit blast theirs almost nonstop.

The most interesting thing I discovered is just how arbitrary the standard 72 degrees F is. I am convinced that this temperature is based on wearing a business suit, which people almost never wear in their own homes in the summer. The truth is that there is no ideal temperature.

These ways to stay cool fit into three categories: Lowering the temperature of your house, lowering your body temperature, and changing your perception so that the heat doesn't bother you so much. Not all of these steps are practical for everyone, but if you can find one or two that you can turn into habit, it can make a difference in comfort and/or in energy consumption.

In addition, I have listed some bonus "green" benefits on each step where they apply.
 
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Step 1Get naked!

Get naked!
Or at least closer to naked.

I know this isn't for everyone, but its amazing how much more comfortable 80 degrees Fahrenheit feels if you're shirtless.

If you live on your own then this is no problem.

If you live with close friends or family, then wearing just your underwear is probably not a big deal either.

If you live with roommates, you can wear lighter-weight clothing like shorts, tank tops, etc. Even going barefoot helps your body eliminate heat more effectively.

In any case, you can probably wear as little clothing as you like at nighttime while you're in bed. If it feels strange at first, give it a few nights and see if you don't get used to it. While you're at it, get rid of your blanket and just sleep under a top sheet.

Wear fabrics like jersey cotton, nylon mesh or linen which don't hold onto heat.

BONUS: You will end up doing less laundry.
BONUS: Your clothes will last longer since you are spending less time wearing them and not washing them as often.
BONUS: Being naked is fun.
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247 comments
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Aug 21, 2011. 8:35 PMshaileelathe says:
I use an earthen pot to store water. It keeps the water cool and fresh. Unlike the refrigerator the water is not chilled but refreshing.

aavaas.com/wp-content/uploads/2008/04/matka.jpg An earthen pot or *Matka* as we call it in India.
Aug 22, 2011. 9:33 PMmarcintosh says:
When I lived in the Caribbean  I learned that when it's really scorching hot,  talk softer, walk slower and smile more.  It really makes it more bearable.

Aug 21, 2011. 7:52 AMbstacy-canelakes says:
It's supposed to be hot, but it's not supposed to be a blast oven every single day, over 102, and up to 110 for months on end! That was never a problem before now. I do very much love your suggestions; they make lots of sense in an average summer. Texas isn't having an average anything; colder and snowiest winter EVER in 2010-2011, second hottest summer EVER this year (so far; it's only mid August), the first was in 1980. Our forbearers didn't deal with THIS. We would certainly, many of us, die without A/C, and some have already, But I do applaud your ingenuity!
Dec 27, 2011. 3:25 PM1234Becka says:
I agree! TX had it worst then OK, but still...a 120 heat index was a bit much to bear. Lost everything in my garden due to the heat, and July no rain. I save on electric in the spring, fall, and winter months. My electric bill is high four months out of twelve...so I fell I am not doing too bad in saving.
Aug 21, 2011. 8:14 AMsgutperl says:
Thanks for the ideas. We didn't have much of a summer this year but since A/C isn't quite as common around here as it is in the US your ideas about doing without sure are appreciated. Thinking back to my last visit to the United States I'm still shocked how people living through a hot, hot summer (not humid, really dry heat) would put their laundry in the dryer instead of hanging it outside and let the sun do the work. All that wasted energy and extra heat!
Dec 27, 2011. 3:18 PM1234Becka says:
squtperl,
I don't have a dryer. I hang my laundry outside in the summer, and inside in the winter if it's too cold or overcast. But in answer to your statement of why American use dryers instead of hanging them outside is due to people, in cities and towns, stealing your clothes of the lines. Had a friend that this happen to in a small town. I don't have this problem as I live out in the country.
Dec 3, 2011. 3:48 PMgrannyjones says:
It all depends on your humidity.
Summertime humidity in many states gets into the 80's and beyond.
Dehumidifying the air to 50 percent makes even a hot room more comfortable.
In drier states, the humidity is lower than 30 percent, making the use of evaporative (swamp) coolers effective.
Natural body cooling works best if humidity is in the 30-50 percent range,
Sep 14, 2011. 11:33 PMbhvm says:
You forgot one important suggestion, Thats plant More trees!
A lush backyard and living walls can keep your house about 5 degrees cooler than bare house!
Aug 26, 2011. 7:41 AMdimtick says:
I don't have time to read all the comments so I'm sorry if this comment has already been made.

this is a tip that i use. I live in a 2 story house with a basement. heat rises. our basement is much cooler than the second floor so in the hot summer days we simply hang out in the basement (it's fixed up so it's nice).
with ventilation what I do is I open all the windows and put fans blowing out only in the second floor windows (keeping doors open). because heat rises the fans will exhaust the hot air and draw in cooler air from below. this is called "chimney effect". along the same lines I also have a big fan in my attic to exhaust the attic heat. keeping the attic cooler can really help the rest of the house.
another thing that i do is during the summer I close all the lower level return air grills so that when I run the air conditioning, the furnace is sucking in the warmer upstairs air rather than the cooler downstairs air. (in the winter I do the opposite).
Sep 14, 2011. 10:45 PMpfred2 says:
It probably wasn't so much heat rising that you were taking advantage of as ground constant temperature. At depth below ground level is an area's average temperature which is usually pretty low. The median ground temperature of most of the USA is around 57F

Scrolling down on this page leads to a soil temperature map though the whole page is pretty interesting on the topic of climate control:

http://www.buildingscience.com/documents/digests/bsd-113-ground-source-heat-pumps-geothermal-for-residential-heating-and-cooling-carbon-emissions-and-efficiency
Sep 9, 2011. 7:38 PMblodefood says:
You are fortunate with a 2-storey house. I have had apartments with windows only on one side. I created a "cross" breeze by opening one window in one room and blowing the fan out the other.
Sep 14, 2011. 10:21 PMpfred2 says:
If you are going to put a fan in your window and the air outside is cooler than the air inside then face the fan out because as everyone should know heat expands so exhaust hot out, to work with the natural thermal flow. Interior temperature will drop quicker than trying to blow cool air in. There really is no such thing as cold, only the absence of heat.

In other words if you find yourself with an abundance of excess warmth be generous with it and toss your extra out the window! You really cannot blow cool in as there is no such thing. You can do something like it, but it is inefficient. What you're really doing is pressurizing your interior and forcing hot out elsewhere.
Sep 9, 2011. 7:34 PMblodefood says:
The fan direction is a valuable comment. I see so many people just blowing a fan in any direction when it is cooler outside and keep complaining that it is still hot inside.

By the way, most bottle water does not come from a mountain stream in the alps. It is tap water. If you already have reasonably good water there is no need to get bottled water.

That said, you can freeze bottles of water and prop them up in a bowl with another bowl upside down inside the larger bowl and blow a fan across them to cool the air. It should take out some of the humidity as the condensation will run into the large bowl. Note: the second bowl inside prevents condensation underneath the larger bowl.

Practical ible!
Aug 28, 2011. 7:49 PMnutsandbolts_64 says:
So much for evaporative-cooling systems in a tropical climate where everything is humid. Well, sleeveless shirts also work in conjunction with shorts. It's pretty much the only way I could work in the house for some reason...

Oh yeah, back to basics, keep a handkerchief or anything of that manner with you in case you sweat like hell. That's what you do when you're in an epically humid environment, where sweat doesn't evaporate nearly as fast if you were in the drier climates.
Aug 27, 2011. 5:45 PMjillf says:
You have overlooked the most effective way to stay cool--stay wet! Wet clothing will keep you much cooler than going naked. Unlike skin, which dries fast, clothing stays wet. No need to waste water or sacrifice your modesty--you can wear wet clothing indoors, outdoors, and in front of anyone. Wet clothing will also protect you from sunburn when outside in the sun.
Aug 21, 2011. 8:15 PMherquiltness says:
I like your TV stand...
Aug 27, 2011. 5:46 AMherquiltness says:
Well, I like that you made this ible -- it's good common sense, and while I adore techie things, we don't need a techie solution to every problem posed. As for my noticing-the-TV-stand-smart-remark ;-)... ibles authors should be given the opportunity to enjoy non-political observations, too. That you were amused indicates we may share the same kind of humor and ible-think!

Have a sensational day, Bindle!
Aug 25, 2011. 4:36 PMcrankyjew says:
solid instructable, friend. this all works in steamy dorm rooms too!
Aug 24, 2011. 8:20 PMstargeek87 says:
Been living in Texas with 100plus degrees for almost sicty days straight. all these sound good but they dont quite help with those high temps
Aug 24, 2011. 11:45 AMabnor says:
I like your idea about tap water, although I must explain that to a naturalist, cold water is a shock to the system.

While I understand we are talking about lowering your temperature, if you want to take care of your esophagus and absorb that water into your system faster, go for luke warm.

I know I know, kinda irrelevant :P
Aug 21, 2011. 9:31 AMmslaynie says:
As someone with chronic illnesses that are exacerbated by the heat, no... it really is bad to get to 110° every day for hours on end, even if that 110° is just the heat index. I don't long for summer in the winter, and frankly, people like me died in previous years. That's why you didn't hear us complaining.

I don't mean to be a downer, but perhaps you could add some disclaimers stating that this works best in certain climates, or that people with medical conditions should be safe, etc. Unfortunately, these tips just don't help all that much everywhere.
Aug 21, 2011. 9:57 PMmslaynie says:
I apologize. I was apparently in quite a mood when I read your instructable. My husband and I have several fans, and we use many of your tips as well as the AC, because even with the AC it's still freaking hot here!

They're good tips, especially when seen as ways to either reduce your AC use or to enhance it. Sorry I was a grumpypants.
Aug 22, 2011. 12:21 AMmslaynie says:
Actually, 110° heat index with food poisoning and a migraine. It was quite the day.

Still, I'm sorry I took it out on you. :D

No hard feelings?
Aug 24, 2011. 6:33 AMjlambert says:
I have two LED lights that I used at night. They started out very bright but after three years they are no longer bright enough to use.
Aug 21, 2011. 11:34 AMlperkins says:
You don't want the water you drink to be too cold. You're generally best off drinking room-temperature water, whatever the room temperature happens to be. If you drink cold water, you'll feel cooler for a while, but it will decrease your core temperature and your body will redirect blood flow inward to warm you up, or, in extreme cases, actually crank up your internal furnace.

Cold water to cool yourself off can work, but hold it in your mouth until it stops feeling cold. Or else pour it over your head.
Aug 23, 2011. 3:32 PMEx Machina says:
Hey, I just had a thought.... If your body has to work harder to bring your temperature back up, wouldn't that burn extra calories? That would be awesome.....
Aug 23, 2011. 7:18 PMKwitmeh3 says:
You are correct, yes it does burn extra calories.
Aug 23, 2011. 2:14 PMBoowiggins says:
We've had over 40 days of 100+ F degree weather & very little rain. It is TOO that hot! But thankfully not inside here.
Aug 23, 2011. 10:27 AMEv says:
Good tips! Look into solar ovens, I'm sure there's plans here, or look up Sun Oven. They only need sun to work, not heat. Cool only as much as needed, see my instructible, http://www.instructables.com/id/Too-Hot-Remove-heat-from-your-body-with-the-Back-/  
Use it in a car, lawn chair, couch, etc. Uses ice and a bit of electricity. 

Aug 21, 2011. 8:54 AMJD_Mortal says:
You don't need to waste that much water to get cool... a simple hand-soak or foot-soak in cool water will lower your body-core temperature. There is little/no insulation in your hands and head and feet. Thus, your core-temp is lowered most by cooling these areas.

Fire-fighters now use hand/arm soaking cooling when they get overheated. This nearly instantly cools them down so they can return back to fire-fighting, where they use this cooling-chair.

Just keep a bucket, like a sink-bucket, and add some ice to the water and soak your hands in it...

Better yet... hold a cold beverage in your hands. Drinking it will not lower your core temperature. You just cool your poo, which is generating heat to combat the cold that just came in. (Your belly is what WANTS to be hot. The colder your belly is, the more heat it generates. Your body wants to be 98.6F inside.) Keeping your belly wrapped-up will trick your body into thinking it is warmer, thus, it creates less heat, making you feel cooler too.
Aug 21, 2011. 9:19 AMShadetree Engineer says:
I'm a dishwasher at a restaurant that uses gas fired ovens in the kitchen with 1950's insulation in the attic. It gets up to 120 F inside the kitchen when it's only 90 outside. I always keep the dish sink full of ice water, even dumping in ice and I can verify this fire fighter trick really does work. The more dishes I wash, the cooler I feel. Of course, oil & grease will be harder to remove, so I use more soap in the water than normal. I don't really need to clean the dishes as the machine does that, my job is to keep the machine from working too hard by removing all trace of food first, the machine runs at it's usual temp along with a chemical bath, where the sterilization takes place.
Aug 21, 2011. 7:44 PMJD_Mortal says:
lol... <--- Ceramic Engineer also.

But I learned this trick from TV and watching fire-fighters here. This is also used in reverse, to stop hypothermia in divers. Wet-suits use heavy insulation on arms and feet, with little on the belly. This causes your belly to sense the cold, causing it to heat-up more, while the insulation on your arms and legs stop the heat from being lost.

I use this trick when I mow lawns in Florida. Don't drink anything unless you are parched. If you drink, drink warm water which absorbs faster and will lower your bodies "warming" triggers. Put a chilled towel on your arms and neck... Continue mowing like it is 75F outside, in the full sun. (Ok, not great for sunburn detection, as you always feel cool.)

Also note... fanning yourself is counter-productive. You heat-up more than you cool, in the action of fanning. Pant like a dog, it is more effective.

Another note... lol...

Fans use less power than AC, but they generate heat in your home, blowing hot air on you, heating up the air inside your home to 98.6F + 50Watts an hour. (That is a modest fan size, cieling fans are 50-150watts... Grab a 150watt lightbulb... that is how hot a 150watt fan gets.)
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