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Old 09-03-2015, 06:09 AM
 
769 posts, read 578,580 times
Reputation: 1786

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Quote:
Originally Posted by nitynity View Post
Thanks for all the responses guys. For some reason, anything below 71 makes me sweat especially with the humidity in Dallas. I woke up several nights sweating and found the thermostat was set at 73F. I know its ridiculous to cool down the entire house for just 1 person, is there an alternative like a portable/mobile cooler unit which could be moved around? I know some Asian countries have it.
This may be a problem with your AC being too big for the house. If it were properly sized, it would pull down the humidity together with the temperature. An oversized AC won't do much for humidity removal because it short cycles.

New ACs should have multiple stages to tackle this problem. I typically run mine on a low stage to maintain temperature. It consumes less power, runs longer and dries the air in the house, which makes it feel crisp and fresh.
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Old 09-03-2015, 07:04 AM
 
127 posts, read 122,477 times
Reputation: 156
There are many factors but on average $250/month, 4000 sq ft, new air conditioners, standard insulation, 30 year old house with pool and spa.
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Old 09-03-2015, 08:12 AM
 
Location: Plano, TX
242 posts, read 315,309 times
Reputation: 179
I live in a 3500 Sqft, 1992 build two storey house. I maintain 78 degrees in the 1st floor and 80 degrees on the second floor and our electricity bill for last month came to around $265. There are plenty of large trees surrounding my house and I have never felt sweaty or hot inside my house.

During the day when I am out both floors are set to 80 degrees.
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Old 09-03-2015, 10:01 AM
 
Location: Shady Drifter
2,444 posts, read 2,003,622 times
Reputation: 4097
78 sounds horrible. That's basically a sweatbox.
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Old 09-03-2015, 10:55 AM
 
9,266 posts, read 9,901,634 times
Reputation: 8005
Quote:
Originally Posted by octo View Post
This may be a problem with your AC being too big for the house. If it were properly sized, it would pull down the humidity together with the temperature. An oversized AC won't do much for humidity removal because it short cycles.

New ACs should have multiple stages to tackle this problem. I typically run mine on a low stage to maintain temperature. It consumes less power, runs longer and dries the air in the house, which makes it feel crisp and fresh.
I realize we've dredged up an old thread........but your post is excellent.

1. Regarding homes......over-sized AC is generally a bigger problem than undersized AC. The humidity issue you mentioned is right on. The closer the dew point is to the temperature the worse a place is going to feel. Oversized AC does this. The yield is short AC cycles cool the house but the short cycles are insufficient to remove enough water vapor. The only simple action that can sometimes help in this situation is to leave the fan running all the time. After a cycle the coil should remain cold and cool for a bit dehumidifying passing air.

2. If I had seen the OP's post I would have advised he buy/borrow a humidity gauge and a thermometer.
A. His indicated 70F might be wrong.
B. He may have a vent close to the thermostat(s) - keeping that/those area much cooler than other areas of the house.
C. He could have a ducting issue yielding cool and warm spots.
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Old 09-03-2015, 11:20 AM
 
Location: Prosper
6,257 posts, read 13,489,487 times
Reputation: 9421
My parents have a 4900 sq ft house built in 2005, they keep it at 76 during the day and 72 at night. Their highest bill during the summer is about $400.
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Old 09-03-2015, 12:59 PM
 
Location: Plano, TX
242 posts, read 315,309 times
Reputation: 179
Quote:
Originally Posted by LeagleEagleDFW View Post
78 sounds horrible. That's basically a sweatbox.
Actually it's not as bad as it sounds. At 77 I bring in the winter blankets :-)
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Old 09-05-2015, 12:55 PM
 
162 posts, read 148,288 times
Reputation: 104
if you are buying this home, ask the owner's electricity bill, and also ask him what temp he usually set it. That at least gives you a starting point, but that large home you should expect big bills, unless the home has all the energy efficient goodies.
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Old 09-05-2015, 09:06 PM
 
162 posts, read 248,182 times
Reputation: 94
5500 sq foot house; keep it at 77-78. Peak bill around $180 in the hottest summer months.
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Old 09-05-2015, 09:43 PM
 
Location: Shady Drifter
2,444 posts, read 2,003,622 times
Reputation: 4097
How in hell's bells are people paying $180 a month in the summer. I've never seen that before in my life in even a 900 SF apartment, much less a 5500 SF mansion.
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