73-74 degrees. AC runs more than I like but it’s an 88 year old poorly insulated masonry house with a shed roof.

72 degrees all year round....

74 degrees 24/7 in the warmer months. We have two ceiling fans that i just turned up to medium speed (blowing down of course).

I insulated the attic to R-49 a couple of years ago and the house has well insulated walls...no problem even with the 95+ temps we are suppose to get this week....but then I do this for a living..;-)

AC here is set to 78. If it gets to where it seems hot inside, we will tweak it down to 77. The rooms we are mostly in have ceiling fans, and it's quite comfortable. We have a pretty well insulated house, good windows, and the house is mostly shaded.

In these parts, quite often in the summer our stores/restaurants/theaters compete by having super-low AC settings which admittedly seem refreshing right as you come in off the street. But after a while, it starts to be, well, a bit too 'refreshing'.

I can adapt to that but my wife usually brings a sweater when we go out in summer.

quote:

Originally posted by Skins2881:
70°F. I don't give a shit how expensive it is, I want to be comfortable when I come inside.

Yup. I tried doing all that programming for being home vs. not being home, blah, blah, blah.
Never saw much difference in energy cost.

Last week A/C ran between 8 and 13 hours per day according to the Nest History report.

72 during day, master bedroom zone 68 at night. Pick the member with a wife in her early 50s.....

To the OP, and some subsequent posts, it sounds like unit or insulation is underperforming for some reason or is undersized. I've never before seen comments like "it should barely keep up at max outdoor temp", etc.

Nest thermostat, 82 daytime, 76 night, house doesn't get much over 79 during the day, we run the fan circulation feature of the nest during the day when the setting is higher, it runs just the fan unit to keep air circulating, very little energy is used and it keeps the house from getting stuffy.

I'm thinking of having a de-humidifyer put on the ac unit, it's FL, its hot but at least its always humid...

72 or 73 during the day. 69 at night, with a ceiling fan.

I was not made for hot weather. Especially wearing a dark blue uniform with a vest. How in the hell people lived in the south before air conditioning, I’ll never understand. My father tells stories of sleeping on the porch and some nights just being too hot to even sleep.

I’ll move my ass to Alaska, thank you.

"Off" works well in Northern Lower Michigan during the summer here on Lake Huron.

I definitely need to get a thermostat for my attic to see what's going on up there. Also, my return air vent upstairs is only 12"x18" and it's located on a wall just above the floor. Does that sound right? Isn't the hot air trapped up high near the ceiling. Am I sucking cool air not hot air back thru the return duct?

quote:

Originally posted by trapper189:
"Off" works well in Northern Lower Michigan during the summer here on Lake Huron.

Hey we have the same setting on our heat pump in the winter months, in central Florida

I have it good. I usually wake up around 5AM, temps are fairly low then. It's usually around 70 outside. I have a large 3 panel door on the west side of the house. I open it up in the morning, leave it open with the breeze (and magnolia scent) coming in. We shut the door and turn on the air at 75 when we go for our first walk in the morning. We drop the built in blinds as the sun goes over the yardarm. It's an all-electric house, I pay about a hundred bucks a month for AC, slightly more for heat.

Set at 71 in the summer, 68 in the winter and don't fuck with it. Steamy 95 outside right now, chilly 71 inside. Elec bill runs less than $200 per month summer, gas & electric run less than $150 in winter for 3000 sq ft 60 year old brick house.

quote:

Originally posted by HRK:
Hey we have the same setting on our heat pump in the winter months, in central Florida

We use that setting in the winter in Florida as well. Unfortunately, that's also the time we set the thermostat for the pool to 85.

quote:

Originally posted by Georgeair:
I've never before seen comments like "it should barely keep up at max outdoor temp", etc.

With an oversized unit you will have short run times, higher utility cost and the unit will not de-humidify like it should, compromising ones comfort. Longer run times will also even out temperatures in the homes with inadequate ducting systems.
Short cycling (more on/off/on) will also cause higher equipment failures (contactors/relays).

Another thing about my system is I only have a total of 616 square inches of return air grill surface area for a 4 ton unit. 216 upstairs, 400 downstairs.

We built about 5 years ago and have geo HVAC and one of those fancy programable therms but I keep it set at 72 year round..hard to tell when it is running because it is so quiet inside and outside there isn't a noisy compressor to run...had our first bill over $200.00 2 months ago.

quote:

Originally posted by P229 357SIG Man:
Another thing about my system is I only have a total of 616 square inches of return air grill surface area for a 4 ton unit. 216 upstairs, 400 downstairs.

Are you using the cheap fiberglass air filters.

I have a Nest thermostat that is set for 74/68 in the summer. Surprisingly, I have had the heater come on a number of times this June when my home dropped to less than 68. The air comes on at 74.

In winter, I set it for 68 daytime and 65 nighttime.

I really like the Nest as it works from my phone.

I too have a Nest T-stat, leave it on cool only during the summer months set for 72 during the day, 70 at night (my electric bill/my business, not yours). Winter it is set on heat only 72 during the day, 68 at night (again it is my gas bill/my business, not yours). I hate those who have the gall to say I waste energy, I pay for it, and I choose to make me and my family comfortable at home.