What does the Equipment Interface Module do? And is it a requirement to run this thermostat?
1858004
The Ecobee thermostat is a two piece unit: the control unit that you put in your hallway and the equipment interface module which you put in your cellar near the furnace. When you buy the thermostat, you get both pieces and you need to use them both. They connect by the cable that your original thermostat used to connect to your furnace and AC, so you don't need to run a new cable. You then connect your furnace and AC to the equipment interface module. Piece of cake, right? WRONG! This is a very flexible and complex unit, and can handle all sort of fancy systems, so you really need to know what you're doing to connect it. I have a separate furnace, AC compressor, and air handler (and a degree in electronics), and it took me about 5 hours with the furnace and air-handler schematics to figure out how to connect this thing. It turned out the original contractors who installed the AC and furnace wiring made mistakes; my old thermostat forgave them but the Ecobee wouldn't. That said...I love this unit. It was worth the time and expense.
1858005
One thing to note is that you can install equipment interface next to or near the thermostat - it does not need to go to the basement (distance between equipment and unit is limited to 39 meters IIRC however).
789720
One of the other answers is perfect. This unit has a black box that needs to be wired into your heating/ac unit. That then transmits wirelessly to the thermostat.
1458933
No. You can operate the thermostat just as you would a normal thermostat but for remote operation, you must have the unit synced with working internet (wifi) connection.
1870049
you need something like this Lux WIN100 Heating & Cooling Programmable Outlet Thermostatit does not have a thermostat built in
758782
Sorry for the delayed response. I actually got the thermostat for my parents as a gift, but did do the setup for them. I haven't heard any complaints about power outrages causing a system reset.
532501
yep, you just plug it in and its set. it also has a thermostat turning it off when it warms up.
2246063
Not for this model. All you need is Wi-Fi. The thermostat connects directly to your Wi-Fi router / access point. When you do the initial setup you choose the SSID of the Wi-Fi network you want to connect to and enter in the password. From there it connects directly to Honeywell and you can manage it from their website or phone app. Some people have noted issues with it disconnecting from the network, but if you force WPA2 that should resolve it.
991961
what jumper? Look at the wiring diagrams of your thermostat. The power to the thermostat is only to be used if your furnace/thermostat connection doesn't use a 24vac power source. My thermostat needed the extra and I was able to to simply determine that the two wires from the power supply should be on The 3M-50 can be externally powered with a power source rated from 12V to 24V, AC or DC, at connect to the C and RH terminals (no polarity). Look at your thermostat wiring diagram to determine the correct connections. My system is very happy with this arrangement, but be careful not to mis-wire your connections. If you cannot find the correct placement, I recommend calling to your thermostat or furnace manufacturer to be sure of the placement, most 'high-efficiency' units are very computer oriented and please do not risk damage to the control unit on your furnace by mis-wiring. Dee
1638087
My thermostat touch screen also failed. I replaced the wall maounted unit (not the controller mounted at the furnace) and it now works fine. If you have a high efficiency system with multiple heating/cooling settings, you will need to program the thermostat. I didn't learn this until a later furnace tune up when I was told the system was using only the low load setting. The technician programed the thermostat.
1538254
I would assume you would be left with a "dumb" thermostat with no programming ability. Just Auto-Heat-Cool, and the temperature setting.
1696039
Yes the ptg can have the thermostat installed. But be careful that you get the right one, I thought they would be universal and bought one. Turns out they Arnt and this one was too long, bummer! It's easy to install and by doing that you can run it off of an inverter!
1487001
I am no expert, but I think that basically you have a heat pump (w/ Aux & Em) like I do, so this thermostat should work as expected; actually, for me, it is a great unit, better than a more expensive model I had before!
463741
It has to be wired to a separate thermostat. There is no temperature control on the unit itself.
1538253
No, you must register and connect to their site, thermostat.motison.com. If their server is down, or they go out of business, you're out of luck, and are left with not only a dumb thermostat, but an ugly one at that!
250833
No the thermostat must have a B and an O terminal to energize the zone controller in the basement. Some companies make wirewless thermostatats that also interconnect to a zone damper panel
223431
No. What you have is a knob that has low, medium and high. I have not had any problem with this setup, I don't know if a thermostat would make a difference. If I had a furnace yes a thermostat is what you want.I prefer to control the unit myself.
1092394
Buy the thermostat. It works well and isn't that expensive. Otherwise it just functions as on/off