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Amazon Smart Thermostat (Refurbished, C-Wire Required) Expired
$30
$69.99
+ Free S/H w/ Amazon Prime
Woot! has Amazon Smart Thermostat w/ No C-Wire Adapter (Amazon Refurbished, S6ED3R) on sale for $29.99. Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.
Thanks community member FeistyChannel251 for sharing this deal.
About this Product:
Thanks community member FeistyChannel251 for sharing this deal.
About this Product:
- Amazon Smart Thermostat is an easy way to switch from a traditional thermostat and help reduce energy usage.
- Do it yourself in 45 minute or less - The Alexa app will guide you through the installation process, but customer service is always available.
- On-the-go control - Let Alexa set the temperature, or set it yourself from anywhere with the Alexa app.
- Requires a C-wire or power adapter kit (sold separately). Most modern homes have a C-wire.
- Amazon Refurbished: These units have been tested and verified by Amazon to be fully functional and include the same accessories and in box documentation as new device. May have small cosmetic imperfections associated with regular use and be repackaged and sold in a brown box.
Original Post
Written by
Edited October 21, 2023
at 04:00 AM
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Home Automation
(7)
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Both are working well. I like the ability to change my temps remotely from an Echo Dot or my phone. They have all the features I want or require. I've never had to reset or reboot them since my replacement arrived.
One caveat: Prior to installing them the first time, I measured the voltage of the blue C-wire. It measured 28v on my multimeter. But, they would not turn on. I finally called my HVAC guy. He was at my house immediately. He measured the same voltage and was perplexed as I was. After crawling up in my attic and hooking up the C-wires, the thermostats worked right away. He said I was getting an inductive voltage reading. A false reading. I tried to pay him, but he wouldn't take my money. He's a keeper.
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Honeywell actually recommended quite a few of them, but this is what I ended up getting: Honeywell Home RENEWRTH9585WF Wi-Fi Smart Color Thermostat (Renewed). Since the support was so great when I was trying to get the Amazon one to work, I went with the renewed one. I also got it from Amazon Warehouse, almost brand new, and it came out to be around $60. Usually they are around $200. Use WRTH9585WF to see the reviews. Here's the link:
https://www.amazon.com/dp/B0B3Q14...tails
It literally showed up this week, so I haven't set it up yet. But I've found that if you search for "2 Heat / 2 Cool" on Amazon then it brings up quite a few options. Most are at $150-$200 though. I also thought about the Nest, which was $80 this week, but I've asked 3 HVAC techs and they all say they hate working on the Nest. They all like the Honeywell.
Hope that helps!
I'm assuming you spent $$$ on that setup, so maybe $200 for an ecobee makes sense. If Amazon is dumping these for $30 that likely means they are going to stop supporting it--or then start charging to use it. Either way its a lose lose.
https://www.amazon.com/dp/B0B3Q14...tails
In newer tstats, especially ones that have fancy screens or connect to the internet, they need more power and thus use the other wire of the 24VAC which is the C wire. All systems will have the "C" wire present at the controller (since they use 24VAC for control, both legs are there), but not all will have an extra wire run from the transformer to the thermostat locations. Some will have multiple wires run, but simply not connected.
The best thing to do is to take your current tstat off the wall, look for common color coding (C is usually blue but that's nothing but a convention) or labeling on the existing tstat that would say C, R, Rh, Rc, W, Y, etc. If there is no C wire there, take note if there are any conductors in the wall that aren't being used.
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thermostat can operate without it