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Sensi Smart WiFi Smart Programmable Thermostat (UP500W) $84.99 + $4.25 RSP + Free Shipping

$84.99
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Emerson Thermostats via Rakuten

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Created 09-03-2017 at 12:51 PM by Discombobulated
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7 Comments

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Joined Sep 2014
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#2
Thumbs up for decent price, thumbs down for rakuten.
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#3
FYI, don't need c-wire. It's battery powered.
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#4
I have one for a couple years. Very flaky on batteries but great when I installed a c wire
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#5
Quote from SkyKing02
:
FYI, don't need c-wire. It's battery powered.
I've done a lot of research on these because I don't have a C-wire. According to what I have seen this DOES need a C-wire for heat only and cool only systems and heat pumps. Unfortunately I have separate thermostats for my heating zones and my central air. You can check out the description on lowes it is pretty clear. Please correct me if I am wrong.
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#6
Quote from benebsm
:
I've done a lot of research on these because I don't have a C-wire. According to what I have seen this DOES need a C-wire for heat only and cool only systems and heat pumps. Unfortunately I have separate thermostats for my heating zones and my central air. You can check out the description on lowes it is pretty clear. Please correct me if I am wrong.
C-wire is for used for "Continuous" power and not really for control. Generally if it can't be powered by battery (which this is), then it will not require a c-wire. Of course there are exceptions if your HVAC setup is non-standard, but this will be true most ppl out there with older home that lack c-wires.
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Last edited by duntbugme September 5, 2017 at 02:21 PM.
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#7
Quote from duntbugme
:
C-wire is for used for "Continuous" power and not really for control. Generally if it can't be powered by battery (which this is), then it will not require a c-wire. Of course there are exceptions if your HVAC setup is non-standard, but this will be true most ppl out there with older home that lack c-wires.
I am bit confused about C-wire.

My home was built in 1998, S.Cal. When I moved in 5 years ago, I replaced the analog thermometer with digital one (hooked all the wires but didn't remember which is which). The thermometer controls AC and gas heater. How do I know it has C-wire or not?
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#8
deal seems to be over unfortunately
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