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re: So my ac is acting up

Posted on 8/6/14 at 2:30 pm to
Posted by pwejr88
Red Stick
Member since Apr 2007
36201 posts
Posted on 8/6/14 at 2:30 pm to
Just brushed up on this myself.

Home a/c units are meant to have the temp. in your house 20 degrees colder than outside temp so keep that in mind.

Also fans can help circulate the air since heat rises.

A crack around your door, open blinds, etc can cause your place to be SO MUCH hotter than usual.

Chances are if your filter has been replaced, you don't see pooling water anywhere, and your vents on the ceiling are all open, it's just hot. Get a box fan. I did and it. is. awesome!

Also try closing the doors to rooms you don't use and closets, this helps concentrate the cool air in the places you spend most of your time. I even close my bedroom and bathroom door and I could tell a difference immediately.
Posted by LNCHBOX
70448
Member since Jun 2009
84304 posts
Posted on 8/6/14 at 2:32 pm to
quote:

Home a/c units are meant to have the temp. in your house 20 degrees colder than outside temp so keep that in mind.

Also fans can help circulate the air since heat rises.

A crack around your door, open blinds, etc can cause your place to be SO MUCH hotter than usual.

Chances are if your filter has been replaced, you don't see pooling water anywhere, and your vents on the ceiling are all open, it's just hot. Get a box fan. I did and it. is. awesome!

Also try closing the doors to rooms you don't use and closets, this helps concentrate the cool air in the places you spend most of your time. I even close my bedroom and bathroom door and I could tell a difference immediately.


This.
Posted by Spock's Eyebrow
Member since May 2012
12300 posts
Posted on 8/6/14 at 2:43 pm to
quote:

Home a/c units are meant to have the temp. in your house 20 degrees colder than outside temp so keep that in mind.


No. The temperature drop across the coil is nominally 20 degrees. The difference between indoor and outdoor temperature depends on other factors such as insulation, shade from trees, etc. I'd be pissed if my house couldn't maintain 75 or below even when it's 100 outside.

quote:

Also try closing the doors to rooms you don't use and closets, this helps concentrate the cool air in the places you spend most of your time. I even close my bedroom and bathroom door and I could tell a difference immediately.


Unless you have sufficient return with the doors closed, e.g. dedicated returns in each closed-off room or door undercuts sized in proportion to the supply, that's going to royally frick up the performance of your system. You'll pressurize those rooms, forcing cool air out of the building envelope, and the starved blower will bring in make-up air from every crack in the building envelope, meaning hot, humid attic and outside air which you now have to cool.
Posted by LouisianaLady
Member since Mar 2009
81225 posts
Posted on 8/6/14 at 2:51 pm to
quote:

Just brushed up on this myself.

Home a/c units are meant to have the temp. in your house 20 degrees colder than outside temp so keep that in mind.

Also fans can help circulate the air since heat rises.

A crack around your door, open blinds, etc can cause your place to be SO MUCH hotter than usual.

Chances are if your filter has been replaced, you don't see pooling water anywhere, and your vents on the ceiling are all open, it's just hot. Get a box fan. I did and it. is. awesome!

Also try closing the doors to rooms you don't use and closets, this helps concentrate the cool air in the places you spend most of your time. I even close my bedroom and bathroom door and I could tell a difference immediately.


All of this.

I just moved into a new apartment, and noticed that my AC was running constantly. The first few weeks there, it was 77-78 when I'd get home from work and was just steady running.

I got a floor fan, and the tree outside my front window happened to bloom, and it's so much better.

I keep it on 74 while gone, and the highest I've seen it is 75.
Posted by diat150
Louisiana
Member since Jun 2005
43670 posts
Posted on 8/7/14 at 7:47 am to
quote:

Home a/c units are meant to have the temp. in your house 20 degrees colder than outside temp so keep that in mind.


this is false. there should be a 20 degree difference between whats going into the intake and whats coming out of the vents. if it was 20 degrees of the outside temp then everybody would be sweating their arse off.
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