House Hot, A/C guy say's A/C working fine. Set Thermo on 68* it is 80* inside, Any ideas?

I have a 1600sqft. house newer a/c (2 1/2 ton), two differant a/c companies say unit is working fine. Why is my house 80-82* inside (90-93* outside @ time)? The thermostat is set to 68*. I am already leaving the doors in the house open to all rooms and the filter is clean also the outside unit is clear of blockage and debris. The house will cool to 68* overnight but, at about 10 a.m. it starts climbing up in temperature.

House Hot, A/C guy say's A/C working fine. Set Thermo on 68* it is 80* inside, Any ideas?
Sounds like you need a lot more insulation as it is not holding temperature. Put more in the attic, put in an attic fan (will lower attic temperature from 150 to about 90), make sure all the windows are sealed and recaulk if necessary, if you have a fireplace close the flue. Is the house in full sun? You might consider planting some shade trees for both the house and the A/C unit. Your size house with your size compressor should have a 15 degree drop.
Reply:MACHE is right !


Use your ceiling fans !
Reply:THERE IS LITTLE DOUBT your insulation is deficient. The least cost and biggest pay back is in your attic. Lay in about a foot of insulation. Be careful not to block your soffit vents. A properly insulated ceiling beneath the attic should not feel any warmer to your touch than the room itself.





If the ceiling is warmer add more insulation. If possible use the rolled insulation - it is easier to handle and you will get more consistent insulation. If you use more than one thickness of rolled insulation run the second course at right angles to the first course. This will "seal" the cracks. You do not need the insulation that is sold with a paper vapor barrier.





NEXT examine your Southern exposure. If you do not replace your south facing windows with argon gas filled double paned windows at least provide non translucent shades to block the sun from entering your house.





WHAT COLOR is your house - a dark color really collects the heat from the sun.
Reply:You need to take a cold shower and run around the house naked. Works every time. wink wink








Possibly, the inside AC, no matter how hard it tries, just can't keep battling the outside temps.
Reply:Its too hot outside during the day. Mine does the same thing and we have tons of insulation. It works more efficiently when the day time temp is under 90.
Reply:You now it really will depend on a lot of things.


1. make sure all debris is cleared away from the unit


2. add a little more instillation in the attic. (not to much $)


3.seal cracks around all windows and doors


4.cover windows up with foil or this year I'm using a theme , like my girls room pink camouflage notebook dividers trimmed and sons room batman pics which looks really cool. By doing just those things and what you are doing you can save 50,00 a month on cooling and it WONT be so hot in the house. I PROMISE!
Reply:Sounds like the unit is big enough . Check to make sure your return vents are unubstructed . Fan speed on the inside unit (Built into the furnace ) may need to be tuned up . Also make sure the condesation drain (Again usually on the furnace ) is not plugged . Outside of those , like some one said , get a different a/c guy 1





Point in fact : We had three guys tell us the a/c unit was just too small for our home . The fourth guy walked in the house , felt the force of the fan at the duct , and went downstairs and upped the fan speed . Yes it is a little louder , but MUCH cooler !
Reply:Try another AC guy.