What to look for in a programmable thermostat

I'm searching for models online and there seem to be so many of them. What are the features to look for in a programmable thermostat?
thanks.
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Honey well have proven to be some of the better models for the DIY guy. You want at least four set points per day. Some are programmable 5/2 days per week, others can be varied every day. If you work weekends and have days off during hte week, the seven day feature is probably important for you.
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snipped-for-privacy@yahoo.com wrote:

I've seen then with a little bar graph showing your energy usage (ie, hours per day that heat was called for) over the last so-many days. How did we live without that?
I'd put a higher priority on "armchair programming", where you can take the thing off the wall and work with it at your convenience, instead of standing in front of it for a half-hour as you program it.
Someone on this NG a few months ago asked about 14-day programming, since his life revolved around a two-week cycle of having his kids in the house. I think the consensus was that no such thing existed.
Chip C
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Get a Honeywell Chronotherm IV. We have the one made for Trane by Honeywell. It has a copy feature so you don't have to program the same things several times. You can also set the time and temperature for when you return from a trip. It also maintains temperature within 1/2-degree. In short it will do everything except cook your breakfast. Maybe it can even do that!
On 24 Mar 2005 11:44:45 -0800, snipped-for-privacy@yahoo.com wrote:

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snipped-for-privacy@yahoo.com wrote:

Seven day programmable, with at least four programs (different temp settings) per day. I believe five/two day programmable with four programs is enough for the energy star program. Your utility might have a rebate for energy star thermostats.
Honeywell is a good choice and their thermostats don't employ noisy relays either. That is a problem with cheap Chinese thermostates (e.g. Braeburn).
Most of the consumer Honeywells are powered by batteries. If you have a common wire, you might be interested in a model that doesn't require batteries to power it. Some models use batteries for battery back up only, some don't need any batteries period with non volatile memory.
If you don't have a heat pump, and do have a one stage furnace (possibly with an air conditioner) I highly recommend the Honeywell CT3600. It requires batteries, but keeps track of usage and has some nice features, like remembering when to start your furnace to have the house at the assigned temperature at the assigned time.
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Most of these thermostats are detachable with "armchair" programming.
I've noticed that the cheaper consumer models (White Rodgers?) may have cheap contacts that easily get bent and mis-aligned when replacing the thermostat. Also, if the battery holders are cheap, sometimes the battery losses contact just for a second and the thermostat will lose all its programming.
Beachcomber
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I bought an inexpensive one for around $30. It has separate settings for weekends. Each day has multiple settings so that I can program it to come on in the morning before I get up, turn off after I leave for work and come back on in the evening just as I am arriving home. On the weekends of course I am home most of the time so I want a different set of settings. Most basic programmable thermostats will do this.
Doug

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Look for quality, not features, such as Lux etc. You want something to last. Honywell and others will last and even control temps better. Good brands have every feature to. Alot of cheap stuff is cheap chinese junk prone to many different types of failures.
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"Look for quality, not features, such as Lux etc."
Why should he not look for features? Features like how easy it is to program or whether it has full 7 day programmability are very important. I've had several of various types over the last 20 years and all have worked perfectly without failure. Plus, I'd bet lots of even the more expensive stuff is made in cheap overseas manufacturing locations.
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Qualty units have models with features, features don`t mean it is a quality unit. I have 2 new Lux that have issues already and 2, 25 yr old Honywell I removed that are fine and work better in temp control . Cheap units are known to cause problems and fail prematurely. Not turning on or off has been documented, not something you want to come home to , a freezing or boiling house. My lux doesnt have an anticipator but temp rise or some other mode of control, it is not as comfortable. And the switches dont engage till I jiggle them . My old Honywell is quality, my lux is not as is alot of chinese crap
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snipped-for-privacy@optonline.net wrote:

I have had 2 different Lux thermostats. One was manual, but digital. After about a year it burned up. The other was a programmable. It lasted about a year, then got extremely unstable. I suggest getting a better quality thermostat, such as Honeywell.
Bill Gill
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snipped-for-privacy@yahoo.com wrote:

When I bought mine a couple of years ago, I didn't get a Vacation mode. Now I wish I had. Every time someone is home for a week (school breaks, etc.), we have to change the weekday setting and set it back at the end of the week.
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snipped-for-privacy@yahoo.com wrote:

First, make sure it is compatible with your heating/cooling system. Easy if all you have is a one stage furnace. More difficult if you have heat pump, two stage furnace, etc.
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