I can watch the temp rise as soon as the sun goes down. After it gets cooler outside (under 72) I open some windows (one with a fan in it) on opposite sides/ends of the house and make sure the outflow is slightly larger than the inflow so I don't create a backpressure situation. It can be 60 outside and even with the fan on all night I still can't get the house under 70 degrees.
The house faces the West so I know it is getting baked.
Any options to cool it faster? I have a big fan and use it on high. Why does it get hotter once the sun gets off it?
2007-08-21 07:47:22 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Physics
I keep the shade drawn ALL the time and have good insulation plus siding and the house is white. I have plenty of insulation in the attic PLUS a fan that moves 1400 cfm and I only have a 800 sq ft home. I open the attic at night to draw the heat out while sucking in cool night air. I have planted some trees on both front and back but it will take years to get tall enough to do much.
I get home at 6 and it's 78 in the house but by 9 it's 84 So it heats up 6 degrees or so in the first 12 hours and then an additional 6+ degrees in the next 3 hours.
2007-08-21 08:14:20 · update #1
It's the heat that the walls and floor have absorbed all day and even heat that's under the house. When it gets cooler outside, the heat wants to transfer out into the cooler area. It travels through the walls by conduction then into the air by convection.
http://www.houleinsulation.com/images/appleagte_facts_1_large.jpg
A 78 to 84 degree rise from 6:00 to 9:00. If you can afford it, you should consider getting a 5000 BTU window AC. It will cost you about $150 and then ~15 cents an hour to run. I'm sure it will be worth it.
http://www.epcmarket.com/soleus-kc15.html
2007-08-21 08:05:03 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Your walls are acting like a heak sink. Can you redo the insulation? That would help. Keep blinds down during the hottest time, when the sun is right on them. How do you feel about putting up a trellis & cultivating sun loving plants along the western side of your house? A foot or so out, once they fill out, it will be like shade. But, the insulation is the most practical. An attic fan may work too, or both in concert & you won't need an air conditioner!
2007-08-21 07:58:24 · answer #2 · answered by fairly smart 7 · 1⤊ 1⤋
Sitting in your house at night is a little like sitting on a hot asphalt road after a hot day. It's been absorbing heat all day and spends the night radiating it back out. The best options are to try to keep some of the heat from getting in to begin with. Light colored shades or blinds over the windows will reflect some of the sunlight back out. Depending on what kind of roof you have, their are treatments that basically paint it white to reflect rather than absorb heat. Insulation helps keep a house cool in the summer as well as warm in the winter, so you may want to add some, especially in the attic. A longer-term option is to plant trees to shade the sunny side of your house. Personally, I like popsicles. Good luck.
2007-08-21 07:58:38 · answer #3 · answered by Anonymous · 2⤊ 0⤋
It takes time for anything absorb heat. Your house is absorbing radiation from the sun and it has to transfer it to the inside. That takes time. Best way to keep it cool is to insulate it. Turn the fan on so that it makes a draft from the lower floors upward and out the roof or attic. Do it before you start to feel the heat.
2007-08-21 07:56:10 · answer #4 · answered by Anonymous · 1⤊ 0⤋
This does not make sense. You appear to be saying your house gets cooler during the day. Near as I can figure, your house continues to get hotter for a little while after the sun goes down, but it must cool later in the night or you would have a meltdown. If that is what you mean, then add insulation to stop stored heat from entering your house. I can't be more specific without knowing a lot more about your home's construction.
2007-08-21 08:01:19 · answer #5 · answered by semdot 4 · 0⤊ 10⤋
your house was under the sun all day say 10 hours.--the building material walls, roof have absorbed a great deal of the heat.--your west facing windows also attracted a lot of radiant heat.----try this--during the day use/buy window shades--white--or white curtain they reflect(doesn't absorb) heat /light and install and use them on west facing windows.--another idea might be to buy tinting for the windows--they have newer ones nowadays that are clear yet the radiant light/heat doesn't pass through.--regarding your house--the roof and the and the walls should be painted a light color.--you do these things and you be asking why my house is so cold next year--lol
2007-08-21 08:03:25 · answer #6 · answered by Anonymous · 1⤊ 0⤋
It takes that amount of time for the heat to penetrate from the outside to the inside of the walls.
That is the reason that the 3 foot adobe walls moderate the temperature so well. By the time the heat has penetrated it has already cooled off.
This is my help from Washington, D.C. USA.
2007-08-21 07:57:37 · answer #7 · answered by Anonymous · 1⤊ 1⤋
mine does the same think they told me it has something to do with your walls sucking in heat and when its cold outside it releases the heat into your house but i dont know if 100 % true
2007-08-21 07:55:31 · answer #8 · answered by Briant A 2 · 3⤊ 0⤋
it happen to me what i did i install wall tiles somehow it was reduced
2015-06-17 20:47:14 · answer #9 · answered by rehmoV 1 · 0⤊ 0⤋