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IA_Chiefs_fan
07-14-2008, 08:07 AM
I have a pretty large house and all five bedrooms are upstairs. The problem is the downstairs is always several degrees cooler year-round and I like it to be cool when I sleep. What I'm wondering is if they would happen to make a dual thermostat system. It would be great if at a specific preset time the thermostat upstairs took over from the one downstairs or vice-versa. The second thermostat would need to be wireless too. I do not wish to spend more than $100 to remedy this. Any possibilities here???

Saggysack
07-14-2008, 08:11 AM
You're fighting nature. Cold down/Heat up. No cheap fix for it. Get a second A/C unit just for upstairs.

Saggysack
07-14-2008, 08:14 AM
Spend $100 on box fans for upstairs?

Deberg_1990
07-14-2008, 08:23 AM
You're fighting nature. Cold down/Heat up. No cheap fix for it. Get a second A/C unit just for upstairs.

What he said.

Your going to have to get a 2nd AC unit with a 2nd thermostat to control it.

Sounds like a pretty big house. Bigger house = more sq footage = more $$$ to heat and cool. Thats the reality.

kepp
07-14-2008, 09:11 AM
I have a 4 bdrm house with all four upstairs. On our ductwork, right where it leaves the furnace/ac unit, there is a lever to switch the airflow between the upstairs and downstairs (switch it to upstairs during the summer and downstairs in the winter). Do you have the lever? I had no idea what it was (no label or anything) until a neighbor told me.

StcChief
07-14-2008, 09:45 AM
Physics cold air FALLS. Keep the doors shut upstairs. I bet the stairway is cold. as the cold air funnels down it.

blueballs
07-14-2008, 10:10 AM
full attic/house fan

ChiefsFan4Life
07-14-2008, 11:06 AM
Our house has dual zoned heating and cooling and it is awesome

Pablo
07-14-2008, 11:08 AM
Sell your house and buy a large ranch home.

Oh wait, under $100...

cdcox
07-14-2008, 11:25 AM
Our house has dual zoned heating and cooling and it is awesome

I had this installed in May when I replaced my whole heat pump system. The way my AC was ducted made it relatively easy to do. The upstairs and downstairs have there own ducting systems that split right at the air handler. Basically there is a valve that determines what % of the cool air goes to the downstairs and upstairs respectively. Each level has its own thermostat.

This beats the physics problem. You pump most of your cool air upstairs, so the upstairs remains cool. Then as the cool air drifts downstairs, it keeps the downstairs cool too, with relatively little cool air coming to it directly from the air handler.

In the winter you do just the opposite with most of the warm air going to the lower level where it drifts up to the upstairs.

The problem is that this was a $1200 add on to the cost of my system (extra thermostat, computer controller, valve, and some ducting), so it doesn't meet your budget. You might be able to get something similar to work by closing your downstairs air vents most of the way and leaving your upstairs ones open, then switch when the weather gets cold. Probably wouldn't work worth a crap, though.

Bweb
07-14-2008, 01:40 PM
The 2 ac's is the only thing I can think of. We have 2 ac's (1 upstairs and 1 down) and it is great.

Do you have ceiling fans upstairs?...maybe turn them on reverse to help suck air up the stairs?

RadrHatr
07-14-2008, 01:47 PM
I have a pretty large house and all five bedrooms are upstairs. The problem is the downstairs is always several degrees cooler year-round and I like it to be cool when I sleep. What I'm wondering is if they would happen to make a dual thermostat system. It would be great if at a specific preset time the thermostat upstairs took over from the one downstairs or vice-versa. The second thermostat would need to be wireless too. I do not wish to spend more than $100 to remedy this. Any possibilities here???

It'll be always be cooler downstairs and warmer upstairs, because heat goes up. try closing your vents upstairs and buying a couple of ceiling fans to keep the warm air downstairs. You can always put a door at the foot of your stairs.

bkkcoh
07-14-2008, 01:58 PM
http://www.espenergy.com/in_line_duct_fan.htm

asdf
07-14-2008, 02:49 PM
close some downstairs vents at night to redirect more air upstairs, and keep the bedroom doors closed if your rooms have an air return - that way cold air will flow through the room and hot air rising from the downstairs will stay out. If the room is real tight with no return vent, open the door an inch or so. As previously mentioned, the other thing you could do would be to get a small window air conditioner for your bedroom.

VonneMarie
07-14-2008, 04:04 PM
Um, heat rises.

IA_Chiefs_fan
07-14-2008, 05:01 PM
I appreciate all the feedback. I know the dual zone system is the way to go someday, but not yet. Those of you who explained to me that big houses cost a lot to heat and cool totally missed the point. I wasn't trying to cut costs, I was trying to increase comfort when sleeping. Also, I do understand the concept that cold air is heavier than warm air. It just seems like there should be some sort of thermostat option that would allow one to take over the heating and cooling when activated. If I could activate the one upstairs when going to bed, then I'd have a good consistent sleep temperature. Our hallway is wide open so a door isn't really feasible. Fans are a possibility if nothing else works well. I do currently open and close vents all the time. Thanks again for the suggestions thus far.

CrazyPhuD
07-14-2008, 05:33 PM
Well while the technical answer is of course heat rises so you're screwed from that point of view.

There may be another option. If you can get your bedroom infested with ghosts, it has been shown that individual spirits can decrease the air temperature in a localized space around them. Now I understand you may not have any ghosts haunting your current house. If you do try to encourage them to reside in your bedroom.

If you don't currently have any ghosts you're still not out of luck. What you need to do is cover your entire bedroom in plastic/vinyl sheeting. Then you need to invite over 20-30 homeless people or illegal immigrants. Basically anyone no one is likely to miss. Then you need to murder them. The more the violent the better so that their spirits have extra incentive to stay around. Dispose of the waste discretely of course.

If you do it right you should now have anywhere from 10-15 spirts now occupying your bedroom. That should be good for a 5-10 degree room temperature reduction all little to no energy costs. Now you can have your cool bedroom! Of course the question of whether the spirits will allow you to sleep is another one, but that's a question for a later time.