Is there a programmable thermostat that can...

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Several...dags

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I don't know the answer to your question (that's hapening a lot today), but how much difference could it make if it sometimes gets to

I'm sure you could have one built (interface inside and outside thermometers and the AC to a small computer). It still could be wildly inaccurate sometimes, because the weather conditions could change drastically between the time it decides to start and the time you expect it to be at your set temperature.

On Thu, 23 Jul 2009 00:33:16 GMT, against all advice, something compelled Wayne Boatwright , to say:

Yes. They are made by Honeywell

On Wed 22 Jul 2009 07:13:53p, Steve Daniels told us...

Thank you!

On Wed 22 Jul 2009 05:46:04p, dpb told us...

Okay, thanks...

Hi, Most programmable 'stat has that ability. It learns the temp rise/fall pattern after you program it. One example is Honeywell Vision Pro line. Micro-processor within is little smart. Take a look at manual which you can download .

I have one here in michigan... after a few unusually cold nights, and a drafty front door, I found my system had "learned" to turn itself on at 3 am in order to hit the desired temp by 7... I turned the "smart" feature off, and suffer thru the 1 degree difference in temp if its a cold night now.

Dave

not even that fancy. I have a trane one that I believe is a relabeled Honeywell, but not Vision Pro. Seems to work well; at least I've never come home to a sweltering house or awakened cold.

nate

Hi. I loved Vision Pro 8000 series. Now I only have one out at my cabin. I moved onto wireless 'stats for other places I own.

The upper end White-Rodgers thermostats can do that, too. Look for units with the feature called "Energy Management Recovery (EMR)"

I had two programmable thermostats removed, and cheepos put in their place. Unless you are homebound and have the exact same schedule week to week, there is always times when the units are running and no one's home, or it's too hot or too cold. Saved a lot of money. We live in hell. Couple of days ago, it was 113. We leave the windows open during the day, as leaving on the AC is just a waste. From the time we get home, it takes only about fifteen minutes to cool down the house. Then at about ten, we open it up again, as the night time temps are very cool. I don't think fifteen minutes is a long time to wait, when given the choice of $$$$$ more each month.

Steve

What I would like is a programmable stat with a NEXT key that would go to the next scheduled tmeperature period.

Becase you're right, sometimes we get up early or come home early and all I want to do is press NEXT and have it now strive for the temp it would in the next time period. Instead, what all that I've seen tell you do to is to press a bunch of buttons to set the temperature for now to some other temp. NEXT would be so simple.

I didn't think of it myself. I saw it on a stat maybe 20 years ago, but I wasn't ready to buy a second one then, and now I can't find this kind.

Does anyone know who sells something like this?

On Wed 22 Jul 2009 07:23:00p, Tony Hwang told us...

Thanks, Tony. I've since looked at the range of Honeywell models, and think model RTH2310 would easily suit my needs. Our schedule and lifestyle doesn't require anything too sophisticated. It's a 5 + 2 program. Our M-F would be consistently the same, as would our Sat-Sun, and this one would do the job.

On Wed 22 Jul 2009 08:53:39p, SteveB told us...

Obviously our situations are different. But first of all, if your AC can drop your temp from 113 down to 75-80 degrees in 15 minutes, I'd say it's seriously oversized. Our unit is sized correctly to maintain virtually any temperature we set, but it take 45-60 minutes to drop it from 80 to 75 degrees when it's 110 degrees + outside. We live in the desert, southeast of Phoenix, so we frequently see summer temperatures well above 110 degrees. Considering that we're also subject to frequent dust storms and are not at home during the daytime, I would nver consider leaving the windows open. We also have 5 indoor cats and several aquariums which would not likely survive temperatures above 90 degrees. Case in point, two years ago our compressor went out and it was two days before we could get it replaced. We moved ourselves and our cats to a motel, but the aquariums were cooked, both fish and plants. That, plus our cats were obviously suffering in the high indoor heat. We have a 13 seer unit and maintain 80 degrees daytime temperatures when we're not at home, dropping it to 75 degrees from the time we get home until we leave for work the next day, as well as all during the weekend. During the winter we maintain 70-72 degrees throughout the season, day and night. We've been doing all this manually, and our electric bill is proof enough that we're saving money. I'd just like to automate it so we don't have to think about it. Our weekday and weekend schedules are at least 95% consistent.

Hi, My choice is Vision Pro 8000(often it's over kill). Nice touch screen, arm chair programming, Very accurate temp. keeping. I used to set it 5+2 day pattern. In summer or winter when we get up in the morning or come home in the afternoon we never felt too cold or hot 'stat did the job for us. Now I moved onto wireless one. I can move it to any area of the house. I live in Southern Alberta where air is very dry particularly in cold winter.

similar to having a generator for backup in blackout or storm conditions, why do you not have a backup window unit which would take just a few minutes to hookup and spare yourself this kind of situation? they are cheap too.

most people where I live have couple spare portable a/c units, small enough that they can be run via a generator and while they may not keep whole house in the 70's, they certainly will keep sections of house close to 80 F

several of my neighbors have now installed permanent backup A/C systems in the form of ductless heatpumps. these inverter models draw just 300-650w of power and provide a nice and efficient backup system and even in normal operation reduce the load on the main system. as you know, a heatpump is simply an A/C with a reversing valve to produce both cool and heat from same coil, no separate electric strips required.

On Thu 23 Jul 2009 03:44:28a, hank told us...

Funny you should mention that, Hank. I think we had a knee jerk reaction when our compressor blew out and we bolted for the motel. Since then we have installed two window units, one in our master bedroom and one in the room where we keep our aquariums. The bedroom is larg enough to corral ourselves and our cats during an AC outage.

Luckily, we live in an area where very infrequent power outages never last more than 15-30 minutes, so I doubt we really need a generator. We haven't even had a short outage in the past 3-4 years. Certainly a good idea where power outages are more prevalent.

Our main forced air system is a heatpump. However, in our climate, we really don't need to consider emergency heating. During the winter I doubt our heat goes on more than a few times, and then only briefly. Funny you should mention auxillary heatpump units. Back in the 1950s, York made sizeable window units that had reversing valves. We had three such units in our house which cooled/heated the entire house effectively. They hadn't yet started calling them heatpumps, thoughl.

yes, the honeywell vision pro series will 'learn' exactly like you are talking about.