New Ecobee lite Thermostat - much cheaper-

With the Lite, you’ll be dependent on ST. That’s probably fine. Yves’ software is good. But still. Future independence costs only $30 or so more. (If you buy more remote sensors, then it’s a little more. I bought two extra. Unless you have a very sophisticated house, you’ll probably have no need for more than 3 sensors. That’s all I have. Two would have been fine.)

You’ll also loose a lot of data on the Ecobee reports. You won’t have the follow me report. I guess that’s not a big deal. You’ll still have the general system and weather impact reports. Those are the most useful. If you want room by room reports to see how they are affecting the average, you’ll have to roll your own. That’s not so hard. It is a small minus though. . . . I’m not sure what the schedule report will look like. I think it will just indicate a long hold, as the software adjusts things using holds. Again, no big loss.

If you get the normal E3, then you have options. If you buy the lite, you have something nearly as limited as a Nest on its own. You can get a lot of power from Yves software either way. If you have the lite, you are stuck with ST + Yves to get much out of the product. That’s not so bad. But I would pay more for the option to ditch ST. I did, pay more, that is. I still have ST and use some of Yves software for changing modes. . . .

So it appears the remote sensors are being unlocked in the Lite:

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Same notes in the Android update. That’s pretty significant, as there is almost feature parity between the two now.

I found some comments interesting that the ecobee Facebook page has been posting. For instance, they posted links to the ecobee3 lite and saying things like “grab them before they’re gone”. Questions people asked were answered with things like “we only made a certain amount and they’re almost gone” and “stay tuned for updates”.

Sounds like maybe they’re prepping for a new product release, and the eb3 and eb3 lite feature differences will be easier to support long term is there’s not much difference between them at all.

Yes, there is an eb4 coming as I was asked to be part of the beta (but I was finally not selected at the end).

The target release date would be probably around October (the usual date for ecobee HW release).

It could also be released sooner…

Anyone know if ecobee lite can control whole house fans? Based on weather. It says it has smarts for pending weather changes. Guessing it just turns off earlier.

My zoned heating/cooling solutions (available at my store) can control whole fan or evaporative cooler switches based on an outdoor temp threshold or based on an internal humidity/temp table.


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I noticed that too. Anyone actually done this yet? I’d be game to buy a few sensors to go with my Lite except would like someone else to be a guinea pig first selfishly as they aren’t cheap.I only have 1 sensor that goes with my other unit so its already paired.

Check out CoRE by @ady624 This community app can just about do anything you can think of. Plus there is unparalleled forum support for it. …oh yeah, and it’s free. :slight_smile:

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Hi @dalec,

Yes, Core is an option, but although Core is a powerful Rule Engine, there is no way that it can reproduce the logic in my zoned Heating/Cooling Solutions to orchestrate vents/whole fan/damper/ evaporative cooler switches, zone & room thermostats efficiently; all in one package.

There is more than 3000 lines of code in each of my smartapps… Good luck to translate this kind of logic to Core…


respectfully, you assume that your control logic is correct for all my friend. :slight_smile: , No need to translate all, just what is needed and in the case of @joel_eggenhuize who I responded to for weather and whole house fan… it’s a walk in the park. As I love quoting @JDRoberts Choice is good.

Yes, options are good. As long as you compare oranges to oranges, not apples to oranges…

Now the big question is do I get 2 Ecobee 3 lite’s for my house or wait until EB4 is released. Unfortunately there is also no rebates in my state for thermostats.

I’d wait to see how well the E3 Lite integrates with the sensors. They just updated to say they will but so far haven’t seen anyone report how it works.

Thanks all. Getting my new central hvac next week. And ecobee lite just shipped via amazon!

I don’t have a whole house fan but am thinking why can’t I use just the fan mode of my hvac. The inlet is right near a door so i can probably set SmartThings to notify me ecobee has switched fan on only and to open the door to let the cold/hot air in. What do you guys think?

Saw the sensors go on sale on Amazon for 20% off so may get a couple. Anyone else tried it yet? Was just doing some reading and realized the E3 lite doesn’t register motion. When its just the main thermostat it doesn’t matter since it’s always just measuring from that one unit, but if you add sensors and turn on follow me, I wonder if it always assumes the main unit is present or not present. I would have to think present.

from what i can tell with ecobee - the “comfort” settings that are enabled with the ecobee schedule only give you the option to have the heat/cool on or on auto - not off.

Do you have your heating/cooling on all the time based on this? doesn’t that get really expensive?

I’m not sure what the issue might be. Sorry. I haven’t looked for a way to just set it to off. Perhaps there is such a way. . . . . But it’s not an issue for me.

I have a simple system with just a boiler. I don’t have AC. {I’ll probably put in a minisplit for the bedroom later. . . .] Auto is a fan setting. I don’t have any fans. . . . My boiler kicks in when Ecobee tells it to run. The pressuretrol governs when it will shut off. The thermostat can just tell it to keep going after a cycle. This is old style steam. [I had to read The Lost Art of Steam Heating to learn how to tune the system. . . .]

In any case, could you explain your worry. I’m curious as to what the problem might be.

thanks. i’m just not used to having these systems on all the time and never off. it seems like a waste of energy to me. but you must have your setpoints set correctly so it’s not wasteful

Hi. I just purchased 3 ecobe3 lite thermostats and am wondering @yvesracine how your ecobee program is compared to out of the box dth support for ecobee with smartthings. Im waiting on my plumber to install the thermostats so they are not hooked up yet. I see today bestbuy has a half price sale on the ecobee room sensors but i read above that with your software i can use my room sensors (i have samsung & iris room sensors on my windows) to determine if a room is occupied? Thanks for your tim

Hi @all4dom

The stock DTH exposes only about 10% of the ecobee APIs… I expose more than 80% of the APIs.

With My Ecobee device, you can use any ST connected temp/motion sensors to adjust the thermostat setpoints (similar to the ecobee’s follow me feature).

And, there are many complimentary smartapps at my github (for the most common use cases):

See this thread for more details:

And, the ST community wiki:

If you want to specify which ST motion/temp sensors to be used at a specific time of the day (according to your ecobee schedule), I’d recommend My Ecobee Bundle which includes the ecobeeSetZoneWIthSchedule smartapp (based on the concepts of rooms/zones/schedules).