Should the A/C be able to run all day/night(set to comfort,naturally)

The lower unit gets very cold(with all vents closed),the 2nd and 3rd floors are not very comfortable,most days.

If we run the system constantly,does it make more sense monetarily,do we save anything by keeping the temperature at a (sort-of) constant,or just run the system when we are going to be here only?

I am of the mind that keeping things even for the most part makes sense.

What do you say?

Ask this question to 10 hvac techs and you`ll get 10 different answers.
,I no if you let a floor or house get hot before you turn on the ac it will seem like it runs forever before it cools down enough to satisfy the thermostat
If you leave it on,and maybe just raise the temp. setting a few degrees.(maybe 10 degrees) during the time its not in use,it doesn`t take very long to cool back down to make it comfy,this is opinion # 1

Quote:

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Originally Posted by wmproop

ask this question to 10 hvac techs and you`ll get 10 differant answers.
,I no if you let a floor or house get hot before you turn on the ac it will seem like it runs forever before it cools down enough to satisfy the thermostat
if you leave it on,and maybe just raise the temp. setting a few degrees.(maybe 10 degrees) during the time its not in use,it doesn`t take very long to cool back down to make it comfy,this is opinion # 1

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Woohoo,, a big time debate question then?:eek:

I am thinking that since there aren't people IN the home during the times of ,say,9 AM till noon, then what's the reason of turning the system off(This is hindsight, after I posted),It gets hottest,most quick from then till 2-3 PM. So we are not only fighting the increased rising temps,but also trying to produce cooler air with hotter air temps outside..

Does this adjust anyone's thinking?

Opinion #...

The temperature of the building will likely rise from 3-6 PM because of the building dumping it's stored heat inside.

So, my dependency would be on when you want it comfortable? Before you walk in the door or hours later?

Higher setpoints reduce AC costs. Erv/hrv's are a way of reducing the costs to heat cool a home. ERV = energy recovery ventilator

The AC in a nutshell reduces the intake air temps by 15-20 deg depending on RH and also reduces humidity.

Heat getting to you too, KBC? We're practically "next door" to each other!