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-   Vancouver Off-Topic / Current Events (https://www.revscene.net/forums/vancouver-off-topic-current-events_50/)
-   -   Air conditioning (https://www.revscene.net/forums/578157-air-conditioning.html)

ZhangFei 06-05-2009 02:18 PM
hot?

i thought all canadians live in igloos.

achiam 06-05-2009 03:20 PM
Try leaving buckets of water in the hot room - the greater the surface area of water the better.
Heat = energy.
Evaporation of water is a transformation of liquid to gas phase, which consumes energy.
With water being evaporated, energy is thus consumed, and therefore the heat will decrease.
This is why coastal areas are cooler than areas inland.

Another trick regarding cooling a hot car is spraying a mist of water inside the car - the fine water droplets will evaporate into gas form, thus quickly dropping the temperature.

Try taking the temperature before and after adding buckets of water.

Shun Izaki 06-05-2009 05:00 PM
the japanese way of doing things is to put a wet cloth in front of a fan. thereby "air conditioning" the air that the fan is pushing.

GTO taught me that :)

FYI, i live on the 25th floor (top) and it's always effing hot upstairs, but for some reason at our elevation, there's always a nice wind.

punkwax 06-05-2009 05:14 PM
My portable AC units are fantastic.

Spend the $ on the 12000BTU.

Hondaracer 06-05-2009 05:16 PM
Quote:
Originally Posted by f00tzilla (Post 6452990)
how much does centralized A/C usually cost for a 4000sqft house
think a friend of mine had his done on like a 3200sq foot house at like 8 grand or somthin?

ilvtofu 06-05-2009 07:46 PM
hmm summers are probably only gonna get hotter so an A/c probably is a good investment, The portable AC i'm using isn't bad, it takes about 20 mins to actually be cold though but its just plug and go, It's only 8000 btu though, but good enough for a bedroom or an office.

CRS 06-05-2009 09:12 PM
Quote:
Originally Posted by Jah Al Zawahiri (Post 6452297)
Yup, depends on the room size. I got AC installed in my entire house last year and it was fairly cheap. I got fed up with portable AC units, it's good for a small room but for larger rooms it's not worth it.
How much did it cost?

I'm thinking about getting A/C for my house too.

Disillusion_10 06-05-2009 09:27 PM
hmm a lot of good suggestions besides an A/C unit I guess, some of the comments reminded me of those spray bottles with fans attached on them so it'd be like the cheap mans A/C

fack it's days like today that make me not want to get an A/C unit. If only every hot day was followed by a relatively cool day.

I was taking a look at futureshop website and saw a 12,000 BTU A/C unit for $450. Might just wait to see what type of heat July/August will bring before buying one.

DJ Milk 06-05-2009 09:38 PM
I have a 12000 btu portable unit and a 5000 btu window unit. The 12000 btu portable is used to cool the main area which is about 600sf and it works fine. The 5000 btu window unit is used for my bedroom which is about 400sf and it works better then the 12000 btu portable unit. By the time I go to bed, it feels like winter in there. I much rather have a 12000 btu window unit on the main floor, but for security reasons can't.

12000 btu portable unit was going for as low as $400 at Rona about 2 weeks ago and 5000 btu window unit was between $90-$100 at most retailers. Now that it's getting hot, price went up to $450 and $150

sebberry 06-05-2009 10:11 PM
13,000 BTU unit works well for my area. I close the bedroom doors and it adequately cools ~ 800 sq.ft to around 23degrees. Lots of heat comes up from downstairs and when the AC is off the temp quickly rises. I have also installed Low-E windows which cut down the amount of thermal heat that comes in significantly.

I also have an portable 8,000 BTU unit in the bedroom that I run for a couple of hours before I go to sleep to cool the room.


There are various calculators online that will help you decide what size of a unit you need.

goo3 06-06-2009 04:29 AM
Quote:
Originally Posted by Presto (Post 6452985)
I live on the 4th floor, as well. My place is definitely cooler than outside. I don't have thermometer, so I don't have any metrics for you. Like Jun says, it's all about air flow. Close the patio door. Install window fans in every room. Depending on the time of day, you'll set your fans to intake or exhaust. What you want to do is have flow. Don't have all the fans doing the same thing.

I currently have 2 fans setup. One in the kitchen, and one in my room. It's usually cooler in my room, so that fan is set to intake, and the kitchen window fan is set to exhaust. This allows the cooler air to flow through my apartment, and the air won't get stale and hot.

I also make sure I close the blinds before I sleep, so the morning sun doesn't heat up my east facing living room. My neighbor would have sweat pouring from his forehead in the morning, when I see him in the elevator. He keeps forgetting to close his blinds.

My parents have one of those A/C units that sits outside the house, but they never use it. They don't have to. They just open up the vents in the basement, and have window fans in all the rooms upstairs, which are all set to exhaust. It pulls all the cold air from basement. Their place is always cool.
How big do your fans need to be? Just regular size? At night, outside air is cool, but inside air is stuffy.

Presto 06-06-2009 06:31 AM
Here is the exact fan I am using:

Holmes Twin Window Fan:
http://cn1.kaboodle.com/hi/img/2/0/0...AAAAASSH-A.jpg

I believe I got 'em at London Drugs.

Shun Izaki 06-06-2009 10:44 AM
Quote:
Originally Posted by Hondaracer (Post 6453205)
think a friend of mine had his done on like a 3200sq foot house at like 8 grand or somthin?
depends with the size of the chiller you get.

For my Lennox one @ 5000Sq ft. house, it was only $7k + install. That being said, I had to make a snow shield for it so the snow didn't get trapped inside of it, but... it wasn't TOO too expensive...

Then again, it only brings down the heat comfortably in that size of a house, it's not ice cold tho.

Shun Izaki 06-06-2009 10:45 AM
Quote:
Originally Posted by goo3 (Post 6453846)
How big do your fans need to be? Just regular size? At night, outside air is cool, but inside air is stuffy.
Im planning to move my Giant industrial-size fan on my balcony. it shouldn't matter the size, but how much it pushes... best investment i ever puchased. XD

thumper 06-06-2009 07:49 PM
Quote:
Originally Posted by Presto (Post 6453871)
Here is the exact fan I am using:

Holmes Twin Window Fan:
http://cn1.kaboodle.com/hi/img/2/0/0...AAAAASSH-A.jpg

I believe I got 'em at London Drugs.
i wish my windows slid up like yours... mine either hinge or slide open sideways and it's difficult to mount these window shakers into them :(

SuperAman 06-06-2009 08:17 PM
just bought a portable a/c 12000BTU at The Brick for $379, shopped around cheapest I can find right now, I was considering the 10000 BTU but for a few bucks more, might as well go for the gusto

josayeee 06-06-2009 09:10 PM
Quote:
Originally Posted by Presto (Post 6453871)
Here is the exact fan I am using:

Holmes Twin Window Fan:
http://cn1.kaboodle.com/hi/img/2/0/0...AAAAASSH-A.jpg

I believe I got 'em at London Drugs.
Those are awsome and cheaper than getting an air con. It does that intake/exhaust thing someone explained earlier but all in one window. Only thing is you have to be at an upper level floor and you need a window that can fit it.

valent|n0 06-06-2009 10:25 PM
I just setup my apartment with the suggested air flow
it seems to help .. the most corner room is set to exhaust the stale air .. and it feels cooler now

Presto 06-07-2009 01:18 AM
Quote:
Originally Posted by josayeee (Post 6454648)
Those are awsome and cheaper than getting an air con. It does that intake/exhaust thing someone explained earlier but all in one window. Only thing is you have to be at an upper level floor and you need a window that can fit it.
My windows require the unit be set up vertically. Since it can't take up the entire space, I block off the rest with bristol board.

heleu 06-07-2009 01:46 PM
I do load calculations for buildings all the time. It depends almost entirely on the orientation and how large your windows are.

If you are north facing, a rule of thumb would be 20-30 btu/sq.ft. So 12,000 btu should be good for a 400 sq.ft space.

The "worst" orientation is south facing. You're going to want 40-60 btu/sq.ft. i.e. 24,000 btu will be good for a 400 sq.ft. space.

If you live in a new apartment with huge floor to ceiling windows, you will want to go even a bit higher.

corollagtSr5 06-07-2009 02:33 PM
hey which brick did you guys buy it at?

EcLiPsEbOi 06-07-2009 02:33 PM
Just so you guys know, I am having the exact same problem. I also have a AC unit but I took it out during the winter season. Now the heats back and I can't stand it! So I am going to replace my single pane windows with low e 2 pane windows. I will let you guys know if it makes a big difference or not. Should be happening this coming weekend. Something everyone could look into if this low e stuff works ;p cheap too.

corollagtSr5 06-07-2009 02:45 PM
superaman how is the ac you bought at the brick?

corollagtSr5 06-07-2009 05:57 PM
damn man its sold out at all the bricks
next shipment is in 3 weeks

SuperAman 06-07-2009 10:04 PM
I bought my a/c at the Brick near Ikea. The one I have works awesome, I got a good deal considering I shopped around and found this the cheapest. I just ordered another one for my room, this one is abit smaller 10000 BTU but it was on sale for 299.00.

Like I said earlier, in my opinion if you have the extra $ you might as well get the 12000 BTU. You can take it to a bigger space or you can take it and put the a/c into a smaller room...You have to love portable A/C's


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