Using the Nest Thermostat in Europe (or not)

When I first learned about the Nest Smart Thermostat I was very excited about it. I of course enterend my email address on the website to receive a notification as soon as it became available.

In the meantime I did check compatibility with my heater with the Nest compatibility check tool, asked support of it could display degrees Celsius (confirmed), and send them a Dutch electric chart of my heater (with my translation) to ask them a more technical question about modulating.

When I finally received the long awaited notification I immediately went to the Nest website to order 2 units, only to find out that I couldn’t select an address outside the US.

Nest Thermostat

Now a product being sold in the US only is something we Europeans experience quite often. Usually these sales limitations are based on marketing decisions, licensing issues or (as one would expect in this case) the fact that a small company simply can’t supply the whole world at once and wants to focus on their home market first. Since I did al my checking before there was no reason to assume the Nest wouldn’t work outside the US (it was compatible with my heater, displays degrees C), so I decided to send it to a friend of mine in the US, who send it to me.

After receiving the product, and I was just playing around with it before installation, I found out the time could only be set by US zipcode. A very unpleasant, and really unexpected surprise. After that I found that more and more functions didn’t work well outside the US. As fas as I can see these are not limitations because it would be difficult to make them work outside the US, but they are deliberate design choices.

Problems with the Nest Thermostat in Europe

  • You can only set time by entering a US zipcode. No time support for timezones outside the US. How difficult can it be to make a basic functionality like a clock work all around the globe? There is no option to set the time or timezone manually.
  • Weather is only available for US cities. This is actually related to the point above. The location for weather can only be set with the zipcode. It is not possible to disable weather at all. How difficult would it be to make weather work globally, or to make it possible to disable it? Most weather databases work globally anyway.
  • No 24h clock support. Why not? That’s a simple switch? Setting the temperature to Celsius is possible though, while Fahrenheit is the only system used in the US.
  • iPhone/iPad app is only available from the US appstore.This is just checking a checkbox in Itunes Producer.
  • Auto away only works when Nest thinks it’s daytime. I managed to kinda work around the timezone issue by setting it to Honolulu, which is exactly a 12 hour difference with the Netherlands. So during the night in my place the Nest thinks it’s day and vice versa. I saw that auto away only works during daytime, so in my case nighttime. This caused my heater to stop working until I activated it by entering the room again. So no preheated room for me in the morning. I had to disable auto away. This also seems a problem for people who work at night in the US.
  • No OpenTherm support. OpenTherm is a widely used system for modulating heaters. Ok, it’s a non-US system, so I can accept that, since it’s indeed only sold in the US, but still I’m missing this feature.
  • Build quality is disappointing. One of the unique selling points used to promote the product is that it is designed by a former Apple designer. While this might be true it’s not a very solid product. The ring that you use to control it with doesn’t run freely. It makes a scraping sound when you turn it sometimes. It is very sensitive too, so if you want to set a temperature in the schedule and press the ring to confirm it, most times by pressing you also change your setting slightly. Build quality is ok for a product like this, but expectations are higher when the name “Apple” is mentioned.

Nest Thermostat iPhone appMost of the above problems I encountered seem to be deliberate design choices. In the light of that thought I have the following issues with Nest as a company:

The Nest thermostat is not for sale outside of the US, but nowhere I have seen a warning that it wouldn’t work properly outside the US. Not even when I emailed support with my .nl mail address with a question about displaying degrees Celsius, as is common outside the US. I also send them a Dutch wiring diagram of my heater. I would expect at least the suspicion that I am outside the US with these questions and then, of course, a polite warning.

The Nest has been featured on so many tech blogs around the world, so a demand from non-US could be expected. If you use google you’ll find many have found their way out of the country. [edit: and if you see the number of visitors for this blog article I can tell you there are a lot of non US citizens who want to buy a Nest] Nevertheless Nest seems unwilling to make a couple of minor changes to the device that would make it work well around the world.

Since support found out I live outside the US they stopped answering my mail. Even though I was polite all the time, and made them a suggestion on how to make minor changes to the software so it would work fine. No answer. When the big overhaul of the firmware V2 came out, none of the minor changes were implemented.

Support doesn’t read your mail. Yes, your mail will be answered, but most times I needed at least one more mail to get the actual answer to my question. This is based on pre-sales experience by the way. I would guess US citizens would experience the same here.

Asking simply what code (Rh, W1 etc) matches what function seems impossible to answer. Instructions for installation require you to have a thermostat connected that uses the same codes. If you would want to install it differently or on a new installation you are pretty much on your own, since most heaters (yes, even US heaters) don’t use these codes. And yes, my old thermostat did have those codes, so I could connect it as my old thermostat, but I wanted to connect it modulating, and thus needed to use different connections.


Don’t buy the Nest thermostat if you don’t live in the US.

Advice to Nest: put this on your website. There is nothing wrong with making a product that only works in the US, but you know the demand worldwide is high due to all international attention your product gets, and therefor you know that some of your products will make it over the border. Yet you choose to ignore that, make money on those sales, and ignore them afterwards.

This is a reblog of an article of my previous website. It seemed quite popular (at least that’s what Google Analytics told me) so I decided to reblog it here.

[cb]Nest Labs[/cb]





21 responses to “Using the Nest Thermostat in Europe (or not)”

  1. Marc Avatar

    Hi Björn,
    An old post, so I’m curious about your experience since then. A second generation Nest (that appears more solid) has already seen the light of day since then, and I’m sure many software updates as well. And recently it appeared on the UK market as well.

    I’m interested what concerns you mention in your post have been addressed since two years.

    1. Marc Avatar

      Oh yes! And also I’d like to know if Eneco’s Toon is as good/advanced/easy to use as the Nest! I tend to go for the leanest solution, so a big color screen is not necessarily better to be.

      1. Björn Avatar

        Can’t help you with that.
        I just bought a Nefit Easy but it’s not installed yet.

        1. Marc Avatar

          Hmmm… It’s interesting too. So if you intend to write a post on it… 🙂

    2. Björn Avatar

      Hi! To be honest, I sold mine a year ago. Nothing had changed until then so I gave up on them. It seems they now finally are changing things.

  2. Dick Avatar

    I just installed a nest gen 2 and found many of the issues fixed.
    1. only a US zipcode.
    Fixed, entered a Netherlands post code and Nest even found the right city: Leidschendam
    2. Weather only for US cities.
    Fixed, I think. Weather looks compliant, only 2 weeks of experience
    3. No 24h clock support.
    Fixed for schedules. Current Time/Date display is stiil USA, AM/PM
    4.iPhone/iPad app only US appstore.
    Fixed , can download in Netherlands
    5 Auto away only works when Nest thinks it’s daytime.
    Fixed, time is NL time
    6.No OpenTherm support.
    Indeed, also in US nest works on ON/OFF systems only
    7.Build quality is disappointing.
    No issues, have a gen 2, quality excellent. And I see mounting options also as quality: even a good looking optional back plate is provided

    The voltage switched by your original thermostat may be an issue(Nest needs 24 volt AC, I had 24 volt DC). May require a relays (my case), and may require a third “C” wire(my preference).

    1. Marc Avatar

      Thanks for taking the time for the update Dick!
      What the brand/type of heater you’ve attached it to?

  3. Dick Avatar

    Actually I connected 2 nests. One is for an AGPO econforte. It expects the thermostat to switch 24 volt AC, and lacks the “C” connection. I connected it to a relay. The nest is connected to the relay coil and a 24 volt AC adapter by 3 wires : existing Rh and W and a new third wire connects the Nest “C” to the AC adapter.
    The second system is a floor heating system. It expects the (wireless) thermostat to switch 24 volt DC. I chose same solution as for the AGPO, including 3 new wires.

    But I tested a 2 wire solution with the relay and AC adapter also (briefly and worked OK).

  4. Marc van Maastricht Avatar

    All right. Thanks again! I’ve got a Nefit Ecomline Excellent with a pretty advanced ModuLine 30 thermostat. 2 wires as well.
    I’m going to figure out if a Nest will pay of, considering the Nest only working in on/off mode. And the heater also has a hot water boiler that’s being managed by the thermostat.
    From what I can remember, when it was installed 10 years ago, the ModuLine supports modulating mode too, and that might even be better than a Nest in on/off mode.

    1. Björn Avatar

      I would say that modulating is always better than on/off.. And ‘moduline’ does suggest modulation a bit..

  5. Bart Avatar

    Just wondering whether anyone has a view on whether it would be better to get a US/Canadian 2nd gen Nest Thermostat, or the new British version (which includes the Heat Link box).

    I have a 2005 Nefit Smartline HR boiler with the most basic of Nefit thermostats (temperature knob which seems to be an on/off command for the selected temp) which is wall mounted connected by two wires.

  6. Marek Avatar


    it is a bit geeky, but in the end there is no problem using Nest i non authorised country 🙂

  7. Marc Avatar

    Really great Marek! Thanks for sharing!

  8. James Avatar


    Just found this blog.

    Much appreciate your posts.

    A quick question: Are you aware whether the EU version of Nest thermostat works right out of the box in Germany. I have a very old boiler by Junkers.

    Crucially i’d like to understand whether the nest has any problems accessing servers or configuring Hamburg post code and time for weather and scheduling etc.

    Many thanks!


  9. Geert Avatar

    Interesting article! I am planning to install airconditioning in my house and would like a thermometer that’s compatible with both the airco and CV.. That way I will be able to control both heating and cooling through one system.

    Will a Nest from the US be able to do that (I read that a ‘Dutch’ Nest is not compatible with airconditioning systems)? If you do have any other suggestions, please let me know

    1. Björn Avatar

      Hi Geert,

      The article is 4,5 yrs old 😉 In the meantime Google bought Nest, and created a newer version that actually works outside the US. I haven’t seen one up close though 🙂


  10. Geert Avatar

    Hi Bjorn,

    Yes, I realize Nest is available through Essent now, but I do not think that version has the option to control an airconditioning system as well. That why I asked 🙂

  11. David Pritchard Avatar
    David Pritchard

    Just to add my grain of salt: apparently Nest *does* now support OpenTherm – finally – but this only applies to the 3rd generation model. No eBus though. I’m also not sure if the OpenTherm only applies to the European Nest, or to the US one too.

    A/C still seems to be absent from the European model, though, bizarrely – was it entirely designed for the UK?!

    I want a smart thermostat that can control a heat pump – ideally for heating and cooling – and Ecobee3 is the only one I’ve found so far.

  12. David Pritchard Avatar
    David Pritchard

    I just found the answers to my questions:

    – No OpenTherm on US 3rd-generation Nests
    – No A/C for European 3rd-generation Nests

    Is it time for someone to tell them that it can sometimes get hot in Europe?

    1. Pablo Avatar

      Portugal, Spain, Italy… All these European countries reach 40º C and above during summer. What’s Google thinking by not providing A/C control for the European Nest? I’m utterly disappointed by that.

      I wonder if I should import the 3rd gen. American version.

      1. Robert Avatar

        I was also trying a 3rd Gen Nest (European version). Granted the Open therm boiler side is interesting but the fact you CAN NOT tell it to have cooling modes and see a cooling setpoint “Digitally” (Even over the cloud!….) is staggering. At this moment I cant see any advantage to using nest other than its a “Nice interface to turn the setpoint up and down” but that it……

        Unless you have a very basic HEATING/DHW ONLY system Nest does NOT seem suitable for use.

        The US version is relay output only so extremely basic controls. Now wating for 4th Gen or other companies products…..

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.