Brand | LUX |
---|---|
Model Name | Smart Wi-Fi Thermostat |
Controller Type | Vera, Amazon Alexa, iOS, Android |
Special Feature | Programmable |
Color | White |
Connectivity Technology | Wi-Fi |
Included Components | thermostat |
Power Source | Battery Powered |
Item Weight | 0.95 Pounds |
Voltage | 220 Volts |
Shape | Rectangular |
Display Type | Digital |
Control Type | Button Control |
Control Method | Voice |
Connectivity Protocol | Wi-Fi |
Style | Smart,Wi-fi |
Backlight | Yes |
Number of Batteries | 2 AA batteries required. |
Manufacturer | Lux Products Corporation |
Part Number | GEO-WH |
Item Weight | 15.2 ounces |
Product Dimensions | 5.81 x 1.5 x 3 inches |
Item model number | GEO-WH |
Batteries | 2 AA batteries required. |
Is Discontinued By Manufacturer | No |
Item Package Quantity | 1 |
Special Features | Programmable |
Batteries Included? | No |
Batteries Required? | Yes |
Battery Cell Type | Lithium |
Average Battery Life | 365 days |
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Lux Products GEO-WH Wi-Fi Thermostat, White
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Purchase options and add-ons
Brand | LUX |
Model Name | Smart Wi-Fi Thermostat |
Controller Type | Vera, Amazon Alexa, iOS, Android |
Special Feature | Programmable |
Color | White |
About this item
- EASY INSTALLATION: As straightforward to install as a standard thermostat but with unique horizontal or vertical mount capability—and so much more capability
- SIMPLE SET UP: Enjoy a no-hassle set up and intuitive programming right on the unit
- CONTROL ON THE GO: The free iOS or Android apps deliver flexible comfort control from wherever you are
- SMART SAVINGS MEET CONSISTENT COMFORT: The geofencing option uses proximity awareness to keep your space comfortable when you’re home and efficient when you’re away
- YOUR POWER PREFERENCE: Choose battery only, micro-USB connection or system power to get your thermostat up and running
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This Item LUX Lux Products GEO-WH Wi-Fi Thermostat, White | Recommendations | dummy | dummy | dummy | dummy | |
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Price | $149.99$149.99 | $79.99$79.99 | -25% $67.69$67.69 List: $89.99 | -12% $184.95$184.95 List: $209.99 | -36% $57.85$57.85 List: $91.00 | -5% $25.00$25.00 List: $26.25 |
Delivery | Get it Apr 2 - 3 | Get it as soon as Sunday, Mar 31 | Get it as soon as Sunday, Mar 31 | Get it as soon as Sunday, Mar 31 | Get it as soon as Sunday, Mar 31 | Get it as soon as Sunday, Mar 31 |
Customer Ratings | ||||||
Easy to install | 3.4 | 4.0 | 4.2 | 4.5 | 4.5 | 4.6 |
Touch Screen | 2.9 | 3.6 | — | 4.8 | 4.6 | — |
Tech Support | 2.5 | 3.7 | 3.3 | — | 3.7 | — |
Temperature Control | — | 4.2 | — | 4.7 | 4.2 | 5.0 |
Alexa integration | 2.0 | 4.5 | 4.2 | — | — | — |
Sold By | Harwell's Green Thumb | Vine Thermostat | Amazon.com | Amazon.com | Zippy Unbelievable Deals LLC | Lux Thermostats |
control method | voice | application, remote, touch | application | voice | touch | remote |
connectivity protocol | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | — | Wi-Fi |
power source | Battery Powered | — | Battery or C-wire | Common wire | Battery Powered | Ac/dc |
controller type | Amazon Alexa, Android, iOS, Vera | Amazon Alexa, Google Assitant, iOS, Android, Touch Pad | Hand Control, Amazon Alexa, Google Assistant, SmartThings | Amazon Alexa, Google Assistant, SmartThings, Hand Control | Hand Control | Hand Control |
specification met | — | energy | Energy Star | Energy Star | — | — |
shape | Rectangular | Square | Rectangular | Rectangular | Square | Rectangular |
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From the manufacturer
LUX/GEO delivers flexibility and control
With its attractive design and soft curves, LUX/GEO has both brains and beauty. The large display, control wheel interface and free Android/iOS App offer intuitive functionality both online and at the device. The GEO gives the user full control with easy to understand programing and built-in radius geofencing to automatically save energy when the user is out of the house.
For use on:
- Universal compatibility for conventional heat & A/C up to 2-stage heat/2-stage cool.
- Universal compatibility for heat pumps with up to 2-stage heat/2-stage cool (including aux/emergency heat).
- 3-wire heat only hydronic systems (hot water, baseboard and radiator).
- Gas millivolt heaters.
Not for use on:
- Heat pump with (Y2) two compressor stages.
- Line voltage systems (120/240 VAC).
Features and Compatibility
- Easy installation and WiFi connection.
- Easy to program from unit or with app.
- Large, backlit display.
- 7-day programming.
- Selectable Fahrenheit/Celsius setting.
- Low battery detection
- Air filter monitor
- Operates on 24V C-Wire, 2 AA Lithium batteries (included) or micro-USB cord (not included).
- Radius geofencing for automatic savings.
- Dual mount: vertical and horizontal.
- Finish: pearl white with brushed chrome accent or black with black chrome accent.
- Mercury free
- 3-year warranty.
- Wheel control interface or smartphone app.
- Use with or without WiFi.
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Radius Location DetectionLUX/GEO can tell your system when you're close to home. |
Bi-Directional MountingInstall horizontally or vertically. |
WiFi EnabledConnect the LUX/GEO via WiFi with free iOS or Android Apps. |
Battery-only optionThree power options include battery only, micro-USB and system C-wire. |
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- Universal system compatibility - U.S. Based Phone Support - Automatic time/date set and daylight savings adjust. - High/low temp and 'device offline' alerts – perfect for 2nd homes or elderly family members. - Rebates may be available from your energy provider. - Includes wall plate and 2 AA Lithium batteries. |
- Wheel control is simple to use. - Works with multiple power sources; 24V 'C-Wire', 2 AA Lithium batteries or USB-Micro plug. - Easy-read display is always visible. - Easy app for WiFi connection and system programming. |
- Operation, set up and function from unit, even without internet connection. - Quickly set your schedule from LUX/GEO or App. - Radius geofencing saves energy with your schedule. |
Product Description
The first Wi-Fi thermostat that doesn't require system power. This 7-day programmable thermostat features free iOS and android app with geo-fencing. Universal system compatibility with 3 power options: 2-aa batteries, c-wire or micro USB. Horizontal or vertical mounting.
Product information
Technical Details
Additional Information
ASIN | B010PTKWW6 |
---|---|
Customer Reviews |
3.0 out of 5 stars |
Best Sellers Rank | #390,633 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #509 in Home Programmable Thermostats |
Date First Available | June 22, 2015 |
Warranty & Support
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GEO-WH-003
220 volts
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the ease of use of the HVAC control thermostat. For example, they mention the instructions are very straight forward. Some appreciate the value and appearance of the product. That said, some complain about the connectivity issues. Opinions are mixed on performance, quality, battery life, and time settings.
AI-generated from the text of customer reviews
Customers find the instructions for the thermostat very straight forward. They say the wifi is easy to setup and the app is easy. Customers say the setup process is simple and the web interface is nice. They also appreciate the simple dial interface and the soft audible clicks when turning the dial. Overall, most are happy with the ease of use and recommend it to others.
"...Installation was easy and they are working great. The Lux Geo thermostat is good but the app and technical support are terrible" Read more
"...allows offset of the temperature readout. * I like the simple dial interface; the soft audible clicks when turning or pressing are nice..." Read more
"...Non-technical family members find the rotating dial easy to use and they can operate the wall unit without having to read any manual.5...." Read more
"...be programmed on the thermostat itself but, there are no instructions on how to do that. Not even on line. That's ok, I was going to use the app...." Read more
Customers like the value of the HVAC control thermostat. They say it has all the money saving features they need, including easy programming and geo-fencing. Customers also appreciate the easy to swallow price point and the fact that it's well worth the money.
"...ver had any problems, I give it five stars, very nice stat for the price, can't go wrong, if you are looking for a stat, I recommend this one, and..." Read more
"...Check!Easy to swallow price point. Check!Better than I had hoped:Simple option when system has no "C Wire'...." Read more
"...So is it heating or not? I'm not home. These were a good price, but super unreliable. Tech support is via email...." Read more
"...Finally, for what I am getting for the price .... it was well worth it." Read more
Customers like the appearance of the thermostat. They say it looks great, has an attractive installation, and is of high quality. Customers also appreciate the simple instructions and pictures. They love the portrait mode and the wall plate that covers old heating and cooling equipment.
"...very nice stat, works very well, I love the size, neat not bulky, looks very nice and neat." Read more
"...The app is better, the power supply issue is easier, the design is nice, and it's $50 bucks less. Hey, that's a win!" Read more
"...tries, but eventually got the thermostat connected to wifi and everything looked good...." Read more
"...So, Johnson controls fixed the app. It's still ugly and poorly designed, but since sometime last winter I have been able to use it...." Read more
Customers are mixed about the performance of the HVAC control thermostat. Some mention that it has great functionality for a lower-than-expected price, and the Android app works well. They also say that it performs reasonably well, and is very useful. However, others say that the smart features do not function great on the AA batteries, and that it causes a lot of wear on your HVAC unit.
"...Installation was easy and they are working great. The Lux Geo thermostat is good but the app and technical support are terrible" Read more
"...I guess the 87th time is the charm. The problem now? The time is off by several hours...." Read more
"...points I looked for in a thermostat were the following: * Usage history data * WiFi (access through a phone App) * Auto change-..." Read more
"...2. The phone app works and easy to use. Scheduling, geofencing, all works as advertised...." Read more
Customers are mixed about the quality of the thermostat. Some mention that it provides basic control over the temperature that it is set to, and the radius feature automatically changes the programmed temperature when all the phones linked to it. However, others say that it's basically useless as a smart thermostat, has a defect, and only works as a manual thermostat. The temperature reading was always off by a couple of degrees.
"...was down, but my local network was still up, I could no longer control the thermostat via the smart phone app, although both devices are connected..." Read more
"...Installation was easy and they are working great. The Lux Geo thermostat is good but the app and technical support are terrible" Read more
"...It was easy to see why this area gets hot as there is little to no air flow since it is sandwiched between the board and the LCD module...." Read more
"...on provides a bright night-light. * It allows offset of the temperature readout. * I like the simple dial interface; the soft audible..." Read more
Customers are mixed about the battery life of the HVAC control thermostat. Some mention that it runs on batteries, while others say that it eats batteries every two weeks.
"...Battery life: the names of the settings for battery life are nonsensical. Your choices are high performance, balanced, and optimized...." Read more
"...It comes with a cord to plug it in if you want or, you can use the supplied batteries...." Read more
"4/29/2018 Update: Removing a star (going from 5 to 4) for battery use and excessive finickiness with USB cables...." Read more
"...Lithium batteries, and in a few weeks, they show that the batteries are nearly dead and need to be replaced...." Read more
Customers are mixed about the time settings of the HVAC control thermostat. Some mention that the app is easy to use and set up schedules, while others say that it's less friendly and does not work together.
"...The problem now? The time is off by several hours. There's no option to set the time on this thermostat.Update #3 about 2 months later...." Read more
"...makes it easy to see how your schedule is working out. * Automatic change-over between heat and cool. * Works without Internet access..." Read more
"...very nice, but they confirmed that auto changeover and scheduling did not work together, and neither did the target temperature feature...." Read more
"...Then each day has to be programmed individually, really?..." Read more
Customers are dissatisfied with the connectivity of the HVAC control thermostat. They mention that it loses connection to the WiFi network and will not reacquire it on its own. Some customers also report that the app is horrible and the unit disconnects from WiFi. Overall, customers recommend looking for a different wifi thermostat.
"...Both thermostats (in 2 different states) randomly lose their WiFi connection requiring me to restart my network...." Read more
"...Pretty simple, right? It wouldn't connect. I went through the process at least 10 times...." Read more
"...Also tested a loss of internet connectivity, I unplugged my router from the cable modem, so my internet connection was down, but my local network..." Read more
"...One of the two units still seems to lose connectivity for several hours then will just come back online at some point...." Read more
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What I finally decided to be my "must have" feature is usage history data. I want to see what the temperature was and how long my HVAC operated. After reading many different articles on home energy, I confirmed that there's almost no significant energy savings to be had by using a "smart/wifi" thermostat as opposed to a just a "programmable" one. All the big savings claims are in how it's used. So I wanted something more significant when going from "programmable" to "smart/wifi" than just claims of savings.
And it also meant that I didn't want one that attempted to "learn" what I wanted. People feel hot, cold, or comfortable at the exact same temperature, depending on what their body is doing at any given moment. And every body is different. Yesterday, I had to put on a jacket and socks, yet the temp was 2 degrees warmer than it normally is inside. Sometimes I run warm. Sometimes it feels warmer/cooler than it is due to the outside temperature differential. Sometimes I'm comfortable, but others are not. And for whatever the reason, there are those in my family that feel that if they change the thermostat to an extreme hot or cold, it'll make it get to that temperature faster somehow---this happens in the car. All. The. Time. The thermostat is at 74 where everyone normally likes it. But the car is hot after sitting in the sun for a while. Change it to 65 so it gets cold faster! ...and I digress. :) Basically, a consistent climate for the house is always better than one that bends to whims. And a "learning" thermostat will always be playing catch-up.
The main points I looked for in a thermostat were the following:
* Usage history data
* WiFi (access through a phone App)
* Auto change-over (automatically switches between heating and cooling as needed)
* Continues to work when the Internet and/or WiFi is unavailable.
* Console lockout (something to deter a passer-by from messing with the thermostat)
I looked at a bunch of thermostats, considering reviews as well as perusing the user manuals. All of the Honeywell WiFi thermostats dropped out because none of them offer usage history. The Emerson (Sensi/1F86U-42W) models dropped out for the same reason. The Vine "Smart Wi-Fi Thermostat" (TJ-610B) also has no history, but there were other red flags for me on that one that would have kept me away regardless.
That left the Nest (3rd generation), ecobee3 (2nd generation), ecobee Smart Si, Schneider Electric Wiser Air (1st generation), and the Lux Geo. The ecobee3 is the nicest, but was 2.5 times as expensive as the Lux Geo; it's nice, but not 2.5 times as nice. The Nest is in the same boat with the ecobee3, but looks like one of those old Honeywell thermostats from 50 years ago, and it has that irritating habit of thinking it knows what you want more than you do. The Schneider is the next one on the list as you go down in cost, but the "only 24 hours of history" and the repeated reports of a clunky phone-app experience made me feel that I'd rather spend extra to get an ecobee3. In the same price range as the Schneider is the ecobee Smart Si. That has the same functionality as the ecobee3, minus the added temperature sensor functionality---and people don't feel it looks as nice. There have been complaints about ecobee's servers going down, but those were resolved years ago, so that didn't worry me. However, complaints that you can't program an ecobee at all if the Internet is down felt significant to me.
And now we arrive at the ~100 mark. Here we have the Radio CT50 and the Lux Geo (well it was back when I bought mine). I was originally favoring the Radio thermostat, but there has been talk (Amazon reviews) of the company starting to abandon the product line and enough people have had issues with WiFi connectivity that it gave me pause. I might have gone for the ecobee Smart Si if not for finding the Lux Geo. It hit all of the major points on my list, and ~100 is better than ~150.
Cons
* Usage data is only in the "cloud", not local. (ALL thermostats with history have this problem.)
* Cannot operate the thermostat through the phone app if the Internet is down. (Almost all "cloud" connected thermostats have this problem.)
* No "recovery" functionality. (Where the thermostat automatically figures out how to get the temperature to the setpoint before the next schedule starts.) This isn't really important to me.
* The setup couldn't find my WiFi network, so I had to manually enter the SSID. However it did connect perfectly after that and it has stayed connected since---and I did not have this same problem when setting up the second Lux Geo upstairs.
* The time that the fan runs in "Clean Cycle" mode is not reflected in the history.
Pros
* The least expensive thermostat offering usage history data (well, it was at the time I bought it).
* I like the look more than I thought I would (don't mind the up-close jaggies in the temperature readout).
* The history data display makes it easy to see how your schedule is working out.
* Automatic change-over between heat and cool.
* Works without Internet access (physically, not through the phone).
* Has a console lockout feature (on the Home screen, hold the green triangle-button for ~11sec).
* The displayed temperature is very easy to read from a distance.
* Leaving the backlight on provides a bright night-light.
* It allows offset of the temperature readout.
* I like the simple dial interface; the soft audible clicks when turning or pressing are nice feedback.
I now have one Lux Geo on the main floor and one upstairs. Both have been calibrated with an offset of -4.6F which brings them into the range of other various digital thermometers I have available around the house (they're all within about 1F of each other). Both are running off the 'C' wire and use the batteries as a backup. I've also figured out, thanks to the history, that having the upstairs temperature set one degree hotter, both HVAC units run about the same amount of time each day. So I feel they're working together fairly well.
Everything is presently working well enough that the thermostats fade into the background. Every few days, I might check the history on my phone to see how much the HVACs have been running, or what the variance has been in temperature through the day. On occasion, I turn on the "clean cycle" mode for a day, but I haven't see a clear benefit in the present weather; I'll probably experiment with it again when it's colder. (Clean Cycle makes the fan run for 6min every 20min to push air through the system; some people like/need it in their home to even out the temp through the house.)
On a final tangent, the Lux Geo's sensitivity to temperature changes has revealed that I've got an issue with the location of my downstairs thermostat. There's either a draft, or I have something wrong in my wiring that occasionally builds up some heat. I originally had feared that the thermostat was broken, since occasionally it would read 3-5 degrees (F) warmer than thermometers I'd put next to it. However, when I took it off the wall and moved it a foot away, it would change to match the other thermometers. So if you think your thermostat is reading the wrong temperature, get at least one other thermometer to check it against. When it's "off", move them all to another location. I've seen the Lux Geo adjust within 10 seconds, but it really depends on the temperature difference how fast it changes (which is a good thing).
With only 2 wires to connect, hooking it up was easy. As a really expensive manual thermostat, it's great. Turn the dial and push it in to set the temp. I'm sure this 7 day programable thermostat can even be programmed on the thermostat itself but, there are no instructions on how to do that. Not even on line. That's ok, I was going to use the app. I downloaded the app and, it wouldn't connect to the thermostat. I have an Android and the instructions only have screenshots for an iPhone but, the concept is the same. You set the thermostat as a wifi access point, you connect your phone wifi to that access point, you go in the app and select your regular wifi network. Similar to setting up an Alexa or a smart TV. Pretty simple, right? It wouldn't connect. I went through the process at least 10 times.
I was just going to return it to Amazon but, I decided to call the support number instead. I had to look for the number online because, it's not in the manual. I was surprised to get someone very quickly. We stepped through the same process I went through about 10 times and it didn't work for them either. They said "We'll send you a new unit. It'll take a couple weeks". I should have said "Nah, I'll just return it to Amazon".
I get the new thermostat and, it has the same issue. Won't setup through the app. I notice on this new thermostat that there's another option on setting it up. On the old one, you only had the option of setting it up through the app. This new one had the option of setting it up though WPS. There's nothing in the manual or the online instructions on how to set it up through WPS. I'll try it anyway. Maybe the screen will walk me through setup like every other WPS device on the planet. Nope. I hit "WPS" and it literally says "First, go to website to register. When prompted, enter device ID". It doesn't tell you what website. I had to Google it. I entered the Device ID and I got "Invalid device ID".
Now, it's too late to return this to Amazon.
UPDATE: I had emailed support asking for instructions on how to use WPS to set it up. I never heard back. A couple days later, I emailed support saying "Hey, I got the new thermostat. What do you want me to do?". No response.
I called them and got someone on the phone fairly quickly again. We spent about an hour on the phone trying to get this one to work. "Take that batteries out, hit the reset button. Put the batteries back in. take the batteries out again, hit the reset button. Put the batteries back in". We did that at least 4 times. He couldn't get the screen he wanted on the thermostat. He said "I'm going to have to have my supervisor call you. It should be about an hour". 2 days later ..... no call.
Update #2. A week later, still never heard back from them but, I finally got the thermostat to connect !!! I guess the 87th time is the charm. The problem now? The time is off by several hours. There's no option to set the time on this thermostat.
Update #3 about 2 months later. When you change the batteries in this thing, you have to go through the whole process of getting it connected the the network again. And again ..... 87 times !!! I'm just using it as a regular dial thermostat at this point.
Reviewed in the United States on March 13, 2021
With only 2 wires to connect, hooking it up was easy. As a really expensive manual thermostat, it's great. Turn the dial and push it in to set the temp. I'm sure this 7 day programable thermostat can even be programmed on the thermostat itself but, there are no instructions on how to do that. Not even on line. That's ok, I was going to use the app. I downloaded the app and, it wouldn't connect to the thermostat. I have an Android and the instructions only have screenshots for an iPhone but, the concept is the same. You set the thermostat as a wifi access point, you connect your phone wifi to that access point, you go in the app and select your regular wifi network. Similar to setting up an Alexa or a smart TV. Pretty simple, right? It wouldn't connect. I went through the process at least 10 times.
I was just going to return it to Amazon but, I decided to call the support number instead. I had to look for the number online because, it's not in the manual. I was surprised to get someone very quickly. We stepped through the same process I went through about 10 times and it didn't work for them either. They said "We'll send you a new unit. It'll take a couple weeks". I should have said "Nah, I'll just return it to Amazon".
I get the new thermostat and, it has the same issue. Won't setup through the app. I notice on this new thermostat that there's another option on setting it up. On the old one, you only had the option of setting it up through the app. This new one had the option of setting it up though WPS. There's nothing in the manual or the online instructions on how to set it up through WPS. I'll try it anyway. Maybe the screen will walk me through setup like every other WPS device on the planet. Nope. I hit "WPS" and it literally says "First, go to website to register. When prompted, enter device ID". It doesn't tell you what website. I had to Google it. I entered the Device ID and I got "Invalid device ID".
Now, it's too late to return this to Amazon.
UPDATE: I had emailed support asking for instructions on how to use WPS to set it up. I never heard back. A couple days later, I emailed support saying "Hey, I got the new thermostat. What do you want me to do?". No response.
I called them and got someone on the phone fairly quickly again. We spent about an hour on the phone trying to get this one to work. "Take that batteries out, hit the reset button. Put the batteries back in. take the batteries out again, hit the reset button. Put the batteries back in". We did that at least 4 times. He couldn't get the screen he wanted on the thermostat. He said "I'm going to have to have my supervisor call you. It should be about an hour". 2 days later ..... no call.
Update #2. A week later, still never heard back from them but, I finally got the thermostat to connect !!! I guess the 87th time is the charm. The problem now? The time is off by several hours. There's no option to set the time on this thermostat.
Update #3 about 2 months later. When you change the batteries in this thing, you have to go through the whole process of getting it connected the the network again. And again ..... 87 times !!! I'm just using it as a regular dial thermostat at this point.
Top reviews from other countries
Now I would give a minus-5 rating. They fixed the app this year, and seemed to be stable for months, but now thermostat just disconnects. It does not automatically reconnect and requires removal of batteries and reset. This works for a few weeks. Again unable to connect to tech support by phone, and reply from email is that they are 'aware of connection issues' and are working on it. Same answer I got 4 weeks ago so hardly believe that they are 'working on it'. I am now completely fed up, and today will replace the Lux with an Ecobee or Emerson model - these do not work with millivolt heating units, but installation only requires adding a $10 relay as I already installed a 24v transformer to keep my Lux going without relying on batteries. Of course with transformer and relay, this will not work in power outage but I had already added a manual thermostat in parallel, to kick in if temperatures got close to freezing. This is what you should do with any smart thermostat actually. Lux - I really tried to stay with you, but this is goodbye.
UPDATE Oct 19, 2020:
Originally I gave this a 4/5 star review. I have reduced this to a 1 star (and would give it zero if I could) and advise people NOT to buy. Most of what I had written remains correct as far as installation. However, Lux was purchased by Johnson Controls in 2019 (after my purchase), and they developed and released a month ago possibly the WORST app ever. IT NO LONGER CONTROLS THE THERMOSTAT RELIABLY. So now I have a 'dumb' rather than 'smart' thermostat. What is the point of having this over a $30 manual thermostat, if you can not control it remotely?? Worse is their lack of customer support. My thermostat suddenly dropped having a solid connection I had for past 18 months, so I travelled 3 hours to our remote property only to find that the sudden disconnect was because Lux servers suddenly stopped supporting the old app. No message from Lux and no option to stay on old app. Installed the new app, connection seemed ok, and the app reported the temperature correctly BUT it would NOT control the thermostat. Poor UI design with scroll wheel that you have to keep trying to turn. Give me back simple UP and DOWN arrows! Very buggy software. If I manually change the thermostat, the app reports the change correctly with a slight lag. If I try to change the temp in the app, at first it looks like the temperature changes but then after 30 seconds , it reverts to the previous temperature! I tried login in and out, resetting the thermostat, rebooting the router, re-installing the app... nothing works. Plus with whatever they did in the firmware, the WiFi sensitivity is worse now, and I was marginal before. Even moving the thermostat right next to the router with full bars does nothing to fix the connectivity.
I have tried to call their customer support. They are not open on weekends. They do not have a 1-800 toll free number, only a New Jersey number that has long wait time. After 15 minutes on hold, I hung up. They do not respond to on line email form I filled in. They no longer offer a web based app to control - only the phone app. So fail at every level.
I am so angry that this company changed to this app without option to remain on the old app that worked, and left so many customers without access to their thermostats. You would think that they tested, but this appears like they released a completely untested and buggy app. Their customer support is non existent. If I had this over to do, I would have just gone the extra step and installed a small transformer and relay (as my heat system is millivolt) to provide power from AC rather than relying on batteries, and bought from a reputable manufacturer like Nest or Ecobee. I liked the previous Lux thermostat setup. I now hate my useless, non functioning Lux Geo thermostat.
PREVIOUS REVIEW:
This originally sold for much more but more featured WiFi smart thermometers became available and brought prices down. We bought 1 for remote location cabin, replacing a mechanical dumb thermostat. Here is what I like and don't like.
1. While it is one of few battery operated WiFi enabled thermostats, I personally would not trust a smart thermostat controlling millivolt heating unit without a 'failsafe' in a situation in which failure could lead to frozen pipes. A solution that gets around this is to wire a mechanical thermostat in parallel and set it to minimal lowest temperature. I was able to place the mechanical thermostat in a closet that was immediately behind the Geo. Of course if you are running a regular furnace, if the power is out, so is your heat regardless of what thermostat you are using.
2. We use a propane fireplace (which has three power vents) to heat a small cabin, and like most fireplaces it is millivolt system. All it needs to call for heat is closing circuit on 2 wires which is great if power is off as we can still get some heat. This thermostat is one of few WiFi themostats that will work with a two wire millivolt system, and was really straight forward to wire using RH and W wires only. The Lux Geo turns heat on/off perfectly well. BIG plus for the Geo. You can use a Nest or Ecobee, but they need 24V to work, so you would need to add a 24v transformer and wire in a relay to then provide an open/close circuit for the millivolt. We did not need all the bells and whistles (or $$) of higher end smart thermostats nor the increased complexity of a relay.
3. Lag can be an issue. The lag between changing temperature on app and having the thermostat respond can be quite long if you are using battery as power source. The unit delays communication to protect battery life. I added USB power and it is much better, usually within 1 minute. On battery, could have been 10 minutes or even more! I have noticed that sometimes I have to enter the temp change twice - not sure if this is related to server lag and time out at Lux end. Just need to check if accepted.
4. Power: There is no icon for which power is being used ie USB or battery or C wire. I know that USB or AC from transformer is working as I can take the batteries and the unit still operates. As a note, when you put the batteries back in, there is a message asking whether you are installing NEW batteries? Clearly Lux knows that system will fail with weak batteries and again that is a concern if you are using this in remote location and you are unable to physically check the system. Using USB to power adds a wire from the bottom that decreases the clean look. I added a 24v AC transformer (Fyve Global unit bought on Amazon) and fed the wires to thermostat through the backplate, to make the install cleaner. Easy - one wire to C, the other to RC (no polarity on AC so does not matter which wire) and remove the RH-RC jumper that is in place so that they are not connected. Works great.
5. There is no indication on app of WiFi communication being intact between unit and router or between app and the unit. This would have been really helpful to have. Maybe they will add in future as other smart thermometer apps have.
6. WiFi sensitivity is ok but not great. The icon for WiFi does show 2 bars with the router where it is and that is enough for control. If I put the router further away to get only 1 bar, the unit still seems to work ok. Better to have more bars I think - dropping a WiFi signal would not be good . On the plus side, if the router loses power, and WiFi lost, Geo will re-establish WiFi contact once available. I have our router on a UPS just in case.
7. You can invite family or friends to control thermostat through the web site. Adding email addresses sends an invite to them to set up an account and control the temperature. Good to have this feature.
8. Not listed as feature, I think that settings are put into non volatile internal memory so if all power fails (house AC and battery), it will remember the last settings.
Overall there are clearly some plus and minus issues on this thermostat but overall my impression is positive for the things it does, that no other units do. Looking forward to arriving at a warm cabin this winter.
Reviewed in Canada on August 4, 2018
Now I would give a minus-5 rating. They fixed the app this year, and seemed to be stable for months, but now thermostat just disconnects. It does not automatically reconnect and requires removal of batteries and reset. This works for a few weeks. Again unable to connect to tech support by phone, and reply from email is that they are 'aware of connection issues' and are working on it. Same answer I got 4 weeks ago so hardly believe that they are 'working on it'. I am now completely fed up, and today will replace the Lux with an Ecobee or Emerson model - these do not work with millivolt heating units, but installation only requires adding a $10 relay as I already installed a 24v transformer to keep my Lux going without relying on batteries. Of course with transformer and relay, this will not work in power outage but I had already added a manual thermostat in parallel, to kick in if temperatures got close to freezing. This is what you should do with any smart thermostat actually. Lux - I really tried to stay with you, but this is goodbye.
UPDATE Oct 19, 2020:
Originally I gave this a 4/5 star review. I have reduced this to a 1 star (and would give it zero if I could) and advise people NOT to buy. Most of what I had written remains correct as far as installation. However, Lux was purchased by Johnson Controls in 2019 (after my purchase), and they developed and released a month ago possibly the WORST app ever. IT NO LONGER CONTROLS THE THERMOSTAT RELIABLY. So now I have a 'dumb' rather than 'smart' thermostat. What is the point of having this over a $30 manual thermostat, if you can not control it remotely?? Worse is their lack of customer support. My thermostat suddenly dropped having a solid connection I had for past 18 months, so I travelled 3 hours to our remote property only to find that the sudden disconnect was because Lux servers suddenly stopped supporting the old app. No message from Lux and no option to stay on old app. Installed the new app, connection seemed ok, and the app reported the temperature correctly BUT it would NOT control the thermostat. Poor UI design with scroll wheel that you have to keep trying to turn. Give me back simple UP and DOWN arrows! Very buggy software. If I manually change the thermostat, the app reports the change correctly with a slight lag. If I try to change the temp in the app, at first it looks like the temperature changes but then after 30 seconds , it reverts to the previous temperature! I tried login in and out, resetting the thermostat, rebooting the router, re-installing the app... nothing works. Plus with whatever they did in the firmware, the WiFi sensitivity is worse now, and I was marginal before. Even moving the thermostat right next to the router with full bars does nothing to fix the connectivity.
I have tried to call their customer support. They are not open on weekends. They do not have a 1-800 toll free number, only a New Jersey number that has long wait time. After 15 minutes on hold, I hung up. They do not respond to on line email form I filled in. They no longer offer a web based app to control - only the phone app. So fail at every level.
I am so angry that this company changed to this app without option to remain on the old app that worked, and left so many customers without access to their thermostats. You would think that they tested, but this appears like they released a completely untested and buggy app. Their customer support is non existent. If I had this over to do, I would have just gone the extra step and installed a small transformer and relay (as my heat system is millivolt) to provide power from AC rather than relying on batteries, and bought from a reputable manufacturer like Nest or Ecobee. I liked the previous Lux thermostat setup. I now hate my useless, non functioning Lux Geo thermostat.
PREVIOUS REVIEW:
This originally sold for much more but more featured WiFi smart thermometers became available and brought prices down. We bought 1 for remote location cabin, replacing a mechanical dumb thermostat. Here is what I like and don't like.
1. While it is one of few battery operated WiFi enabled thermostats, I personally would not trust a smart thermostat controlling millivolt heating unit without a 'failsafe' in a situation in which failure could lead to frozen pipes. A solution that gets around this is to wire a mechanical thermostat in parallel and set it to minimal lowest temperature. I was able to place the mechanical thermostat in a closet that was immediately behind the Geo. Of course if you are running a regular furnace, if the power is out, so is your heat regardless of what thermostat you are using.
2. We use a propane fireplace (which has three power vents) to heat a small cabin, and like most fireplaces it is millivolt system. All it needs to call for heat is closing circuit on 2 wires which is great if power is off as we can still get some heat. This thermostat is one of few WiFi themostats that will work with a two wire millivolt system, and was really straight forward to wire using RH and W wires only. The Lux Geo turns heat on/off perfectly well. BIG plus for the Geo. You can use a Nest or Ecobee, but they need 24V to work, so you would need to add a 24v transformer and wire in a relay to then provide an open/close circuit for the millivolt. We did not need all the bells and whistles (or $$) of higher end smart thermostats nor the increased complexity of a relay.
3. Lag can be an issue. The lag between changing temperature on app and having the thermostat respond can be quite long if you are using battery as power source. The unit delays communication to protect battery life. I added USB power and it is much better, usually within 1 minute. On battery, could have been 10 minutes or even more! I have noticed that sometimes I have to enter the temp change twice - not sure if this is related to server lag and time out at Lux end. Just need to check if accepted.
4. Power: There is no icon for which power is being used ie USB or battery or C wire. I know that USB or AC from transformer is working as I can take the batteries and the unit still operates. As a note, when you put the batteries back in, there is a message asking whether you are installing NEW batteries? Clearly Lux knows that system will fail with weak batteries and again that is a concern if you are using this in remote location and you are unable to physically check the system. Using USB to power adds a wire from the bottom that decreases the clean look. I added a 24v AC transformer (Fyve Global unit bought on Amazon) and fed the wires to thermostat through the backplate, to make the install cleaner. Easy - one wire to C, the other to RC (no polarity on AC so does not matter which wire) and remove the RH-RC jumper that is in place so that they are not connected. Works great.
5. There is no indication on app of WiFi communication being intact between unit and router or between app and the unit. This would have been really helpful to have. Maybe they will add in future as other smart thermometer apps have.
6. WiFi sensitivity is ok but not great. The icon for WiFi does show 2 bars with the router where it is and that is enough for control. If I put the router further away to get only 1 bar, the unit still seems to work ok. Better to have more bars I think - dropping a WiFi signal would not be good . On the plus side, if the router loses power, and WiFi lost, Geo will re-establish WiFi contact once available. I have our router on a UPS just in case.
7. You can invite family or friends to control thermostat through the web site. Adding email addresses sends an invite to them to set up an account and control the temperature. Good to have this feature.
8. Not listed as feature, I think that settings are put into non volatile internal memory so if all power fails (house AC and battery), it will remember the last settings.
Overall there are clearly some plus and minus issues on this thermostat but overall my impression is positive for the things it does, that no other units do. Looking forward to arriving at a warm cabin this winter.
The geofencing seems to work reasonably well, it detects when you enter and leave the home and adjusts the temperature appropriately. The app also seems reliable; at least for Android it has a widget so you can easily view the current temperature. It's also useful to see the statistics of how much heating (or in my case, AC) was used, so you can see the effect of your scheduling changes without waiting for the next hydro bill. In my case, the amount of hydro used during a summer month immediately after installing this, was significantly less.
If I could, I'd probably have a 'full featured' smart thermostat, but this is much better than nothing.
Those lasted less than 24 hours.
When it works it is great but the customer support is poor and hard to reach . Have had many second thoughts about replacing it but it would be admitting to wasting over a hundred dollars !
Customer support from Lux is non-existent.
I wish it had been this broken when I bought it, because I could have returned it and got my money back. Instead I got a few months of good service out of it before the forced obsolescence was pushed out.