Home |
Search |
Today's Posts |
|
Home Repair (alt.home.repair) For all homeowners and DIYers with many experienced tradesmen. Solve your toughest home fix-it problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to alt.home.repair
|
|||
|
|||
cool house overnight, partial answer
"Lacustral" wrote in message ... Tamarack sells a whole house fan that is 1000 CFM. They recommend it for up to a 2000 sq foot house, in places where summer temps get up to 95 - which is about what happens here - it does get above 95 F sometimes but rarely over 100 F in the summer. Scaling down for my 640 sq foot upper story I'd need about a third of that minimum, or 330 CFM. We put in a whole house fan in the attic the 50's, and it did a good job, especially at night with the screen windows open, created a nice breeze. Then my mother would close the house up in the morning and open the windows again in late afternoon. But it still got pretty hot at times. The main advantage to those is if there is a prolonged spell of temps over 90, it gets all that accumulated hot air out of the house at night. If you can't have central a/c, that is the next best thing. I have 3 commercial fans, two large and one small. They work pretty well until it gets so hot they are just blowing the hot air around. Then I just hide in my one air conditioned room. We can't use swamp coolers in my area becaue it is too humid. |
#2
Posted to alt.home.repair
|
|||
|
|||
cool house overnight, partial answer
I Love Lucy wrote: "Lacustral" wrote in message ... Tamarack sells a whole house fan that is 1000 CFM. They recommend it for up to a 2000 sq foot house, in places where summer temps get up to 95 - which is about what happens here - it does get above 95 F sometimes but rarely over 100 F in the summer. Scaling down for my 640 sq foot upper story I'd need about a third of that minimum, or 330 CFM. We put in a whole house fan in the attic the 50's, and it did a good job, especially at night with the screen windows open, created a nice breeze. Then my mother would close the house up in the morning and open the windows again in late afternoon. But it still got pretty hot at times. The main advantage to those is if there is a prolonged spell of temps over 90, it gets all that accumulated hot air out of the house at night. If you can't have central a/c, that is the next best thing. I have 3 commercial fans, two large and one small. They work pretty well until it gets so hot they are just blowing the hot air around. Then I just hide in my one air conditioned room. We can't use swamp coolers in my area becaue it is too humid. IMO, a lot of how useful a whole house fan can be depends on where you live. For example, if you usually have high humidity combined with heat, then they aren't much good. You can cool the house off at night, but you are pulling in humid air, which is a big part of the comfort equation that a whole house fan can't deal with. I agree that they are useful for folks with no AC. However, I see a lot of people that have AC considering getting a whole house fan to use part of the time. And IMO, for most parts of the country, that doesn't make much sense, because there are so few days of the year when it will really work well, it's just not worth it, especially since the amount of power it takes to run the AC those days is not huge. Plus, you then have the problem of trying to seal it off well in the winter, dealing with heat loss through it, etc. |
#3
Posted to alt.home.repair
|
|||
|
|||
cool house overnight, partial answer
|
#4
Posted to alt.home.repair
|
|||
|
|||
cool house overnight, partial answer
Banty ) wrote:
I'm in upstate New York where it can get humid. But the whole house fan does the job if it's under about 85 outside, or about 80 if it's humid. That's a lot of days out of the summer and just about every night. I live in upstate NY too! Ithaca. I wanted to keep the house as cool as possible by passive means. I got the attic pretty well ventilated - may be putting more insulation in there, and I'm planting tall trees around my house. The fan isn't passive but I hope maybe all those things together will avoid having to use AC. Electricity is very expensive around here, also there's noise. Laura |
#5
Posted to alt.home.repair
|
|||
|
|||
cool house overnight, partial answer
In article , Lacustral says...
Banty ) wrote: I'm in upstate New York where it can get humid. But the whole house fan does the job if it's under about 85 outside, or about 80 if it's humid. That's a lot of days out of the summer and just about every night. I live in upstate NY too! Ithaca. I wanted to keep the house as cool as possible by passive means. I got the attic pretty well ventilated - may be putting more insulation in there, and I'm planting tall trees around my house. The fan isn't passive but I hope maybe all those things together will avoid having to use AC. Electricity is very expensive around here, also there's noise. I'm near Poughkeepsie. I lived in Rochester one summer, though; it definately can get hot and humid there. All those plans are great. On trees, you'll need some sun on your roof, especially in winter (plant deciduous trees..) and not have them close enough to affect the foundation. I planted a maple six years ago to catch some shade on the west side of my house during those summer afternoons, but still let the west side of the roof see some sun some of the day during the summer and all day (well, whenever it's sunny) during the winter. Whole house fans do have that fan noise. I don't find it much of a bother, though, and if there's more than the fan air-moving noise it's either unbalanced or the bearings are going. Banty -- |
#6
Posted to alt.home.repair
|
|||
|
|||
cool house overnight, partial answer
"Lacustral" wrote in message ... Banty ) wrote: I'm in upstate New York where it can get humid. But the whole house fan does the job if it's under about 85 outside, or about 80 if it's humid. That's a lot of days out of the summer and just about every night. I live in upstate NY too! Ithaca. I wanted to keep the house as cool as possible by passive means. I got the attic pretty well ventilated - may be putting more insulation in there, and I'm planting tall trees around my house. The fan isn't passive but I hope maybe all those things together will avoid having to use AC. Electricity is very expensive around here, also there's noise. I have way more trees than average shading my house (well the sides at least, see further down), and the house still gets hotter than you know what sometimes. The last two summers haven't seemed quite so bad, but then temps didn't spike and stay close to 100 for days like they have some summers, plus I had a new roof put on with vents which may help the attic from accumulating so much heat. Still, whether it's humid or not, it gets pretty miserable when the temps get above 90 even with so much shade; however what really matters, I suppose is that not much of the roof is shaded due to the sprawling style of the house which probably makes a difference. The house is a darker brown shingle which probably doesn't help either as darker colors absorb more heat. My biggest problem is that I can't throw all the windows open at night with the screens on like we could when I was a kid because it isn't safe any more almost anywhere unless you're armed; even that doesn't always help. When you can't have the windows wide open at night, it traps the hot air in the house for days. Sometimes I turn the powerful fans and try to get a wind tunnel going by sucking in on one end and blowing out on the other, but it isn't very effective when it has cooled down a little at night and before I close up the house and windows for the night. Even running fans and one window air conditioner jacks up the electricity bill, but not as bad as my heating costs have been running the last two winters which have been relatively mild compared to how they get sometimes. But if you're going to be immobilized from the heat, it's better to just suck it up if you can and pay the higher costs and enjoy the summers more. The humidity makes the heat worse and central air takes the moisture out of the air as well as cools. I started having central air put in; the initial cost wasn't all that bad, but was worried that my bills would go too high as I save in summer compared to the awful costs winter has become, don't want to go on the budget plan. But my box has to be completely redone, so I postponed it. Now that energy prices have risen even more, I'm resigned to probably never getting central air. Everybody in my neighborhood has it; they must make megabucks to pay those bills. They don't *seem* to have to sacrifice to do it, people with young kids even (which takes more out of the family income). That's why it would be helpful to me to have an attic fan; they are powerful and can suck in air even if just a few windows are just cracked open a couple inches which I feel I have to do now. One silly way I have learned to cope with the worst days when I don't want to be stuck in one air-conditioned room is to use a spray bottle and/or wet my t-shirt and shorts down in cold water. That helps until they dry out. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
fanpower needed to cool house overnight | Home Ownership | |||
fanpower needed to cool house overnight | Home Repair | |||
fanpower needed to cool house overnight | Home Ownership | |||
looking for info on cool old house | Home Repair | |||
Buying a house: Some questions | Home Ownership |