Smart thermostats

The greatest thing since dumb thermostats

Smart thermostats. We’ve all heard the name, we’ve all heard the hype, and we’ve all heard the oppression against their “smartness” when coupled with today’s high efficient reverse cycle heat pumps.

My smart thermostat journey began when I was tasked with integrating a Nest Learning Thermostat into one of our customers high efficient Daikin ducted reverse cycle inverters – one of our project managers took our famous CMS “can do” approach a little too literally. When he was asked whether we could fit a Nest, his first initial response was “of course, how hard could it be?” After the job was quoted and promises were made, my team approached me (me being the company’s leading controls technician), Nest in hand – “make this work on that system” was how I seem to recall the request.

At first, I eased into the project, head held high ready for a simple integration. Boy, was I wrong! Long story short, this was no simple feat. I was determined and in the end we engineered a solution, but in the mean time, I realised what is really wrong with the internet and it’s users.

I scoured the net looking for help (or a shortcut so I didn’t have to engineer the solution myself) with the thoughts of “surely someone has done it”. Every corner I turned I ran into the same wall;

“Will the Nest work on my system?” asks one user.

“My controller has different wires than the one on the website” stated another.

“I’ve wired it in and nothing happens” seemed to be a trending phrase.

In response to all these questions were equally uneducated statements from the sites peers.

“The website says it works with 95% of systems; just cut the wires and it will work”.

“The Daikin website has a Nest on it – that means it should work!”

I think the biggest issue relating to the smart thermostats is it’s target market; tech savy Gen Y’s who aren’t afraid to rip an extra low voltage thermostat off the wall and replace it with the futuristic smart thermostat, because they’ve read how to do it on the internet, and the internet says it’s easy.

Don’t believe me? Read for yourself help needed, or even INCOMPATIBLE.

The only problem is, Australia seems to lie directly in the 5% of incompatible (for the tech savvy home user) HVAC systems. Naturally, their response is to go back to where they found the ‘easy to install’ information and tell the rest of the world that smart thermostats are dumb.

All in all, after all of the hour’s spent searching the world wide web, I came up with nothing but pages full of either “why doesn’t it work?”, “smart thermostats are dumb” or “for sale – thermostat is not compatible with my system”.

This turned my determination to find a solution into an obsession to find an answer. And I am proud to say I succeeded.

The truths about the smart thermostat

I’m not one to read the internet and make a final decision. I also don’t believe it’s very fair to pass on information to the unsuspecting public, unless you are 100% sure you have all the facts you need.

During the many countless hours I spent designing, testing, failing, redesigning, and being told it wouldn’t work, I got to spend quite some time with these thermostats in hand. I compiled a list of truths about the thermostats to ease the mind of my fellow readers.

“Smart thermostats only control dumb HVAC”

While this is somewhat true, it’s not the wiring system that makes these devices smart, but the algorithms that have been programmed in that provide the smarts. It is just the wiring interface provided for the end user is a little dumb, although with a bit of manipulation we can overcome this issue.

Truth is – these thermostats ARE compatible with Australian HVAC systems. Not “straight out of the box, wire it up and you’re good to go” – but yes they are compatible with a little tweaking. This little “tweak” began as a CMS customer only advantage, however we have now come to the realisation that the rest of Australia are (not just asking, but) pleading for a solution.

We are listening.

CMS are proud to announce that we are currently in the process of manufacturing a DIY integration interface. This interface will allow home owners anywhere in Australia the ability to connect smart thermostat (such as Nest, Ecobee, Tado etc) to their existing HVAC system. All you will need is basic electrical knowledge, or your local HVAC technician to perform the task for you!

First release will be compatible with ducted Daikin SkyAir, Fujitsu, Toshiba & Boiler systems. We have currently been working on other makes, and strive to have them released shortly after.


We are also gathering information via a short survey, and would really appreciate your input! You can find the survey here.

Contact the EZLink team today to discover what smart thermostats are compatible with your system.






Last updated  06 JUNE 2019

On 03-01-2017 167 67972

167 thoughts on “Smart thermostats

  1. Al says:

    So I’m confused. Your article points out that we are missing some information and you will presumably provide it Toni’s. so where is it? 😊

    • admin says:

      Hi Al, good to see someone actually reads what I write 🙂
      I do state that there is information overlooked, and I provide a solution to the lack of information through our smart thermostat interface. The downside to our product is that it needs to be installed by a HVAC technician sue to the fact that we need to plug a few plugs into the main pc board on the indoor unit, and this will expose people to 240v. If I can help you out personally, id be more then happy to take the discussion further in depth.

    • admin says:

      It Can definitely be done, It is becoming a regular job for us now.
      I’m more than happy to answer questions and provide information, But as I’m sure you can understand, this is my job, and I need to make at least a little bit of money from it, so handing out my hard work to be replicated will take some convincing. In saying that though, if you’re a good convincer, you might just get the better of me. 🙂

  2. Andy says:

    I am also lost researching this.
    I have a old 1987 hi voltage reverse cycle ducted system (i think) and i want to install a nest for my google home.
    Can you install for me or point me to someone on melbourne who can?

    • admin says:

      Hi Andy,

      the older the units are, the easier they are to integrate.

      Unfortunately our operations are confined to Canberra, although I am more than willing to help where I can.

      If you could send through some more details on your unit and the thermostat that your currently utalizing, ill see what i can do to support the installation of your smart thermostat.

      look forward to hearing from you

      • Connor says:

        Hi Admin,

        I am located in Canberra, and very interested in installing a Nest thermostat. If possible could you please contact via email to arrange a quote?

        Kind regards,


  3. admin says:

    Hi Guys,

    I’ve been contemplating producing our interface as a package to sell to consumers, The package would consist of our interface, detailed instructions how to install the interface and install your smart thermostat, and all required cabling. If I can get enough interest for the product, I think id be able to reduce the price and make our interface readily available to the public.

    let me know if anyone is keen and ill get things started

    Chris Wilson

    • Ann says:

      All the tech savvy GenXers who’ve been smart enough to read about the issues and talk to actual master tradesman prior to purchasing a $600 hockey puck will come out of the wood work. I just hope you find a colleague in Melbourne to partner with for interstate installs.

      I got advised that even if the power (extra transformer) and connection issues could be overcome that the safety concerns of the need for a central override in the apartment block (private aircon unit, common vent for drawing fresh air) would nix it!

      • admin says:

        Hi Ann,

        We are full swing in the development of a diy kit to help the rest of Australia be if it from smart thermostats,

        The power and connection issue is resolved through our interface.
        In regards to the fresh air issue you described, Although it is a case by case scenario, generally the outside air is enabled through a relay built into the indoor ac unit when ever the unit is running, it has nothing to do with the thermostat, so I don’t see it being an issue


    • Rols says:

      Hey Chris,

      I’d be interested in seeing what you guys come up with. I have a Daikin BRC24Z4 & want to add WiFI capabilities to it. I cant believe in this day and age how hard it is to add WiFi controls!

      Please add me to the mailing list.


      • admin says:

        Hi Roland

        Daikin does have a module called a “skyfi” that you can add onto your indoor unit to provide wifi functionality. It lacks any smart features but does enable full control and remote access via your phone and the daikin app.

        The issue with zones and smart thermostats is that you need to have 1x smart thermostat per zone. As I’m sure you could imagine, that gets expensive. But it does enable individual temperature control per zone.

        I’ll add you onto our mailing list


    • gina pascoe says:

      I’m keen!!!! despite our home being a multimillion dollar (we have run seriously over budget) project we ultimately could not afford cbus home automation as planned.

      would love something to make the nest thermostat work.

  4. John Op De Laak says:

    Hi Tony I have an ACSON system and I would like to purchase wiring diagram and technical support information from you so I can get someone on site to replace existing wall controller with a nest remote thermostat. We live in Harvey Bay Queens land, about 300 km above Brisbane or I would ask you to install it directly. Can you give me an idea of the price and if I send you a picture of our unit would you be able to tell me if your wiring diagram will enable me to replace the existing controller
    Thanks John

    • admin says:

      hi John

      We are located in Canberra,

      If you would like to provide me with your unit details I’ll see what we can do to help you out,


  5. John Op De Laak says:

    Hi Chris it’s an acson system that’s about 8yrs old. Consists of what looks like a 7 hp unit with three ducts ( one in each bedroom and one in the sitting room). I have pictures of the inside of the unit I will try and catch to this note if not my email address is

    • Benjamin George Griffin says:

      I also have an Acson system of a similar age. Acson itself was acquired by Daikin in 2006, but I assume they’re still quite seperate at the engineering level. Let’s stay in touch! (me at bengriffin dot me)

  6. Owen H says:

    This has been killing me too – the provided controls for scheduling on my Daikin ducted system are terrible at best, downright impregnable at worst.

    I don’t need the exact answer to get some kind of better thermostat onto it (to replace BRC1E62), but given you’ve got experience, a point in the right direction would be much appreciated 😀

    But if not, I might need to just hit you guys up!

    • admin says:

      Owen, don’t get me started on the scheduling abilities of proprietary controllers :).

      We are full swing in the development of our DIY kit. This system will provide users the ability to adapt their smart thermostat of choice to any inverter-based system.

      The system is currently working well for our Canberra clients but was designed with professional installation in mind.
      we are hoping to have the product ready mid feburary.

      I’ve added you to our mailing list so you will be among the first to know of the updates,

      thanks again Owen, and as always, feel free to contact us to ask further questions

      • Owen H says:

        Thanks so much! I’ve got an electronics background, but I’ll probably leave it to the pros – can’t wait to see the DIY kit 😀

  7. Andrew Hargrave says:

    Hi, what you say in your post seems to make logical sense – these smart thermostats are simply the same as our old dumb thermostats with WiFi connectivity and programmed algorithms inside. I thought there real reason they aren’t in Australia is due to their radio comms not being legal in Australia. Am I wrong?

    • admin says:

      Hi Andrew,

      I’m not sure where you received that information, Are you talking about their WiFi interface or the IEEE 802.15.4 wireless protocol? To my knowledge, both comply.

      Id like to hear more from you about this through.


  8. Richard Stokes says:

    Hi, keen to be added to list for further information and kit. We are looking at adding this to the spec of a new home. Any notes on limitations would also be of interest.

  9. Gary says:

    Hi in Canberra and have a ducted Deakin system in an apartment with two wires to the controller.
    Keen to contact you to discuss being able to connect to wifi through like Zwave with a nest or ecobee controller.

    • admin says:

      Hi Gary,

      We will be required to run a few extra wires to your thermostat to connect it to our interface. As long as we can do this we will have no issue integrating your daikin ducted unit with a nest or ecobee controller.

      We can provide a site visit to assess the feasibility of running the extra cables. Please contact our office on 02 6284 4221 to book in the site inspection.


    • admin says:

      Hi Phil,
      Good to hear from you.

      How is the daikin ducted zoned? do you want a nest to control each zone or is the zoneing done buy a third party device (zonemaster ect)?

      send through some details of your unit and ill add you to the mailing list for updates.


  10. Alexei says:

    Hi, enjoyed your article and read with interest about your efforts to produce a DIY ‘kit’ solution.
    Similarly to others, I cannot comprehend how hard some of the manufacturers (specifically DAIKIN) make it to add WiFi interface.
    I would be pleased to be added to your mailing list for your solution.

    I have 3 ducted splits (for zoning), and each one currently has a BRC1D61 controller.
    Have looked at SkyFi and seems clunky.
    Ideal solution would be to replace the existing wall remotes (BRC1D61) with an IoT device, and compatible app, hosted on household wifi, and accessible by internet access thru gateway.

    Interested to know your thoughts.

    • admin says:

      Hi Alexei

      Thanks for taking the time to have a read.

      Our DIY solution will be perfect for your situation.
      due to the fact you will need to buy 3 thermostats and 3 interfaces it will end up costing a bit, but I think the added fuctionality will be worth it.

      You’ve been added to the mailing list so you’ll be kept up to date with our progress.

      Again, thanks for taking the time to have a read, we look forward to providing the products you need to benefit from this great technology.


  11. Lachlan says:

    Hi Chris,

    I had a new ducted system (Temperzone ISD141KYX) installed before Christmas in Melbourne. 2 zones, one Nest controlling each. When first turned on the performance of the system was poor, but after contacting Temperzone it appeared that the compressor was only running at 40% because it wasn’t getting a temperature signal from the thermostats, only a run signal. I’ve managed a temporary fix by flipping a dip switch in the condenser unit to disable the inverter and run the compressor 100% whenever it is on, but I’d like the variable speed functionality back if I can get it. Is this an issue you have encountered? If so is it something that can be overcome?



    • admin says:

      Hi Lachlan.

      Sounds like you have a decent understanding of the way the units work.

      At this current time, I havn’t had too much to do with the temperzone units, but I am slowly working through the different units as they come up.

      I’ve had a quick look this morning and it doesn’t seam like it will be difficult to come up with a solution.

      I’ve added you to our mailing list so you will be kept up to date.

      I’ll let you know when the time comes to tackle the Temperzone units.


  12. Mat says:

    Hi, we have a Daikin RZQ100PV4A single zone ducted inverter system with the BRC1D61 wall controller. I installed a new main PCB to the outdoor unit due to rodent damage & it works really well now however the thermostat doesn’t appear to be working correctly. Set at 25 cool & it can get down to 18. Was thinking of some sort of smart controller to replace the old one when I read this thread. Hoping to find a solution soon.
    My brother is an electrical A/C technician so adding items, wiring etc won’t be a problem.

    • admin says:

      Hi Matt,

      our solution sounds like it will suit you down to the ground.

      Ive added you to the mailing list for updates.



  13. Juan says:

    Hi, I am interested in your DIY solution.
    I live in Sydeny and our apartment has 2 zones controlled by a switch, but both controlled by a brc1e62 unit, I want to replace it with a Nest Thermostat.

  14. Luke says:

    Thanks for writers and sharing your experiences. This problems has been driving me nuts. It’s surprising that there is not a simple switch out for ducted air con controllers.

    I have an 8 yr old ducted daikin and I’m keen to be able to switch on and off remotely via my phone or easily program on and off. The standard daikin controller is so difficult to use.

    Is this something you’re offering?

    • admin says:

      Thanks for reading (:.

      Yes your not alone thats for sure. We are working tirelessly to get the DIY version sorted out. Our solution will provide a fairly simple changeover for a tech minded DIY person, and will be able to be installed by any electrician or aircon guy if you do struggle a bit.

      Ive added you to the mailing list, so you’ll be among the first to benefit from this technology.

      Thanks again


  15. Micheal says:

    I’m also interested in this for my Daikin ducted system, please add me to the mailing list so I can be advised when your kit is available. Thanks

    • admin says:

      Thanks Micheal, You’ve been added. Ive added a link to the bottom of the blog post so people can add them self.

      Thanks again


  16. ROB WELLWOOD says:

    I’m also very interested. Ours is a large house over 3 levels and we have a separate Daikin ducted inverter unit for each leavel (7.1, 12 and 18 kW). Scheduling and remote control (via app) are my priorites, but Nest’s learning algortihms would be a bonus. Daikin SkyFi (discontinued) seems to have left a lot of frustrated users in its wake, and the other aftermarket control options don’t quite seem to fit the bill. Please add me to your mailing list.

  17. Sean says:

    Been trying to find an installer in Sydney to sell and install a split system (ideal ducked) that works with Nest. We are only a few hour drive from Canberra 😉

    • admin says:

      Hi Sean,

      Good to see more people keen to utilise these smart thermostats,

      We’d love to help you Get integrated but unfortunately sydney is out our region for A/C installs, however I’m more then happy to assist your installation techs install a nest to your system when the time comes.


  18. Jared Hirst says:

    Hi Chris,

    I have a brand new Daiken that I want to couple with a nest! It’s a 16kw single phase inverter with the premium controller. I didn’t go the skifi option as there are so many bad reviews! I was looking up to see if the Nest would work with the Daiken and found your posts 🙂
    Keen to know if your device will work with my 3 zones and if I need 3 of them?

  19. Julian Bott says:

    Hi Chris

    I have an old ducted dx AC unit it has 2 zones you manually select and just 1 controller that I assume is also the thermostat. Can you email me about your DIY kit for a smart controller. Do I need to find out what AC make and model it is?

  20. Danny Jarman says:

    Hi Chris. I have a 2 bedroom apartment in Melbourne that has 2 Daikin BRC944A2B controllers installed. Each controller runs 2 Daikin ceiling mounted FDXS60CVMA units. Do you think that I will require 2 of your interface units in order to replace my current controllers with NEST controllers? Regards Danny.

  21. Dean says:

    Hey mate I’m an electrican and I’ve installed heaps of smoke alarms but now I’m getting customers asking about the thermostats, I was just hoping you could give me some gidence

  22. Ewan says:

    Hi Sean,

    Could I be added to the mailing list too. Been waiting for someone to do something like what you’re talking about.

  23. Wayne Kerr says:

    Hi thanks for thinking of us, all we Australians get the finger on a lot of things thanks for trying. I have a Lennox furnace with adding cooling I would like no wall thermostat only a thermistor to read the temp and the rest hidden and an interface via a smart phone simple and clean no big crap hanging on the wall. Help us all thanks.

  24. Jared Kells says:

    Would you make a trip up to Wollongong? I’ve got a Daikin with a BRC1D61 thermostat and would kill for something a bit smarter and more user friendly.

  25. Gary Wieland says:

    Hi Chris,
    I’m from the States and bought two nest controllers with me and would like to install on a Fujitsu AOT30RMBL ducted system. Finding it incredibly difficult to find a vendor to install it or any smart thermostat for that matter. It is a ducted system with a 240v damper (controlled by a wall switch which ducts the air to either the bedrooms or the living/kitchen etc., either or, not both unfortunately. Has a funky hardwired wall controller. The unit is circa 2005 and is in good condition however Fujitsu tells me they no longer have parts for this unit. Any help plus inclusion in your mailing list would be most appreciated. Thanks. Gary.

  26. John says:

    Added to the Mailing List – Looking forward to this DIY Kit – otherwise my Ecobee is just sitting at home doing SFA. I have a Brivis Advance Evap AirCon and a basic ducted gas heater with two bloody controllers – Brivis one is an analgue which is crap and I have replaced the original controller for the Heater with a Honeywell which has a timer and 7 day planner – all of which plus wifi and remote control I want to add to the Evap. I also want to get rid of two controllers and just have one.

    Thanks – your the best lead I have.

  27. David says:

    Hi Chris i have a Actron ESP+ reverse cycle ducted with 4 zone controllers, the master controller is smart but I want different temps during the night and day on a timed basis.. Do you have a solution that talks to the data on the Actron or a onboard soultion?

  28. Brad says:


    We have a hydronic radiator system in the Blue Mountains currently using a Siemens REV13 thermostst…which i absolutely hate. i have bought a 3rd gen Nest but the plumber was having trouble installing the Nest. Would love to be added to the mailing list for further instruction or purchase of an interface.

  29. Paul says:

    I have a Daikin 12.5kw ducted and a 14.0kw ducted. About 2 years old. I think they are both controlled by a BRC240Z8 Or similar looking. Would prefer to keep the existing thermostat to control the ducted zones, but open to suggestions. Would like to use the nest to turn on/off use IFTTT etc… used to fix big computers in the 80’s so should be fine following instructions, and have experience putting the smoke back in if it should leak out.

  30. david says:

    Hi also very interested in this. I have an old three phase arkair ducted unit i would love to know how to convert. Any information greatly appreciated.

  31. FD says:

    Hi Chris, I’ve stumbled across this post and am very interested and have signed up to the mailing list for availability. If we are in rough in stage now and want to have proviso for your solution with a Daikin premium – where do your cables need to run from and to where and and would Cat 6 be ok for this or would you recommend some Belkin control wire instead?
    Thanks 🙂

  32. Tareq says:

    Hi Chris

    This is a problem I have been trying to solve for quite some time, but alas i do not have the expertise. I have a daikin RZQ71LV1 (split ducted system, with outside mounted unit, and i believe CPU in the roof).
    If you could assist in helping me install a nest thermostat (either 3rd gen nest thermostat, or thermostat E) that would make my day. Happy to pay for any reasonably priced installation kit.
    I have joined the mailing list.

  33. Chris says:

    March tomorrow!! Still running on schedule?

    I am mid gutting /renovating my home. I have removed 4 split systems and looking to install a new ducted system. Probably the largest single phase system I can get.

    I am set on installing the Nest so keen to get a conversion kit as well. Would also be interested in your recommendation for the system. Surely some are easier to convert than others.

    Chris – Adelaide

  34. Sam says:

    I’m very interested in this DIY solution you are coming up with. One question, I have a Daikin ducted system (2x RZQ160KV4A outdoor units, not sure what the indoor one is) which are controlled by a pretty stock standard Daikin control panel and a dedicated Zonemaster for choosing zones (obviously 😛 ). Just wondering if your product would be right for this setup? Also can I just replace the “dumb” thermostat with a [single] smart thermostat while leaving the Zonemaster to do it’s thing or am I better off with another solution?

    Shame I’m on the other side of the country other wise I’d have multiple jobs to hire you for!

    P.S. Wish I could attach photos of the controllers here.

  35. Shane says:

    I am intrigued by your solution for connecting smart thermostats.

    I have a Braemar TH4X30N gas heater and Lennox CH33-50/60C-2F-3 chiller controlled by a Braemar Spectrolink thermostat. It really sucks! The programming is pretty limited and there doesn’t seem to be a way to automatically switch between heating and cooling depending on what the weather is doing. Being in Melbourne this is an important function!

    I had a Nest in the UK controlling the hydronic boiler. The thermostat on those things run at mains voltages but Nest provided a control box to switch the higher voltage. It worked great! I brought the Nest with me back to Australia and was very disappointed when I realised it wouldn’t work over here.

    The control board on the Braemar unit has a dumb thermostat input that simply switches the unit on and off but you lose fan control and I’m not sure what happens with the cooling.

    I’ve been building my own smart thermostat with a Raspberry Pi and some Arduino boards and was about to embark on trying to reverse engineer the Braemar thermostat protocol but I’m wondering if your board might work better.

    I’m looking forward to seeing your solution!

  36. Adam Vorich says:


    I’ve got a gas ducted heating system and was wondering if you could help a bit. I live in Melbourne so I understand you can’t help in person, but I contacted the nest people and they said that my system would work because it only has R and W wires. Does this sound right?


  37. Ashley says:

    Whats the latest on the DIY kits? Keen is an understatement. I am building a house in NSW and my AC guy is keen to know what’s required etc.

  38. Tony Phan says:


    Very interesting in this interface, been looking for something like this for a while.

    I currently have a Daikin Ducted System with two zones (upstairs/downstairs), together with the interface will they be able to control the dampers? For example, if the downstairs thermostat is “on” and upstairs is “off”, will it close the upstairs damper? If both thermostats are “on” then both dampers would be “open”.

    I might be misunderstanding how the dampers work here, I have a seperate panel for them, hence I assuming they are independent.


  39. Dave says:

    Will this DIY version work with line voltage thermostats? (It would be installed by a licensed provider) I have an old 2-wire floor heating system which i am keen to be able to control remotely.

  40. Alex says:

    Chris, my experience is exactly as you describe. Great post.

    I have a Breezair EXQ/EXS model evap air con and a Bremar Ecostar TH325NG. Can you offer any advice to hook up an Ecobee3? I wish you were in Melbourne 🙂 I’ve added myself to your mailing list.

    Thanks, Alex

  41. Marc says:

    I’m just wondering how the development of your Kit’s going? We’re just getting a ducts Daiken system installed (controller BRC1E62) however i’d Dearly love to ditch this and go with the Nest thermostat.

  42. Shafaqat Ahmed says:

    We have Daikin RZQ100PV4A with single indoor wall controller. It is working perfectly but I failed to locate any kind of wifi or Bluetooth control ducted aircon system for our smart home integration. How is going to cost to install any additional equipment?

  43. Shahan says:

    Hi Chris,

    My new house comes with a Actron Air Classic SRG131E ducted system and I know it is not directly compatible with Nest. Will your interface support Actron Air too ?


  44. Dale Baker says:

    Just joined the mailing list and very much looking forward to getting my hands on one of these units.

    Hopefully the wait wont be to much longer.

  45. Brendan says:

    I have a Bonaire Digital slimline controller that uses comms to control both my heating and cooling that I want to integrate with an Ecobee 3 lite for Homekit compatibility. I am in Victoria also.

    Would your interface work with this?



  46. Dave K. says:

    Hi Chris, I live in the Blue Mountains and have a ducted gas heating system with a Braemar Spectrolink controller. I would love to get my hands on one of your integration kits to connect to a Nest thermostat. Will this be compatible and do you have a forecast developments timeline? Best regards, Dave K.

  47. Richard says:

    I just wanted to check in and see how you’re going with the development of your NEST adaptor? I want to install a NEST controller in my ‘weekender’ house in the Blue Mountains and integrate it our Brivis SP630E gas central heater. This system in currently controlled by a Brivis Networker (NC-6). Having remote control to warm the house before we arrive will be a game changer for us.
    I’d also been keen to hear your recommendation for how I can get it installed at our location.
    Please note that I’m already on your mailing list for your upcoming adaptor.

  48. Garry says:

    Hi… Interested in this DIY kit. We have an LG ducted unit (artg45lhta) which i would like to get working with a Nest thermostat. Will your kit work with this unit? When will you have a realise date for the kit? Thanks

  49. Shalin Naik says:

    HI there, I have a Honeywell CHRONOTHERM IV Thermostat. Frustratingly I can’t change the temperature at all!! Just have to copy paste 18°C that was already present to other days, but actually I’d like it to kick at a higher temperature. Anyway, I digress, I’d like to get in a Nest thermostat and be done with. Really happy to hear about a solution that I could implement in Melbourne. PLEASE PLEASE PLEASE help!!

  50. Sagar says:

    Hi Sean,
    Interesting article.

    I wanted to get this dumb smart thermostat on our ducted air conditioner. Coming staright to point if youguys can do how much would you charge. Do we need to buy our own nest thermostat…??

    We live in sydney

    Contact me to discuss

  51. Foti Papoulis says:

    I work for a developer of apartments and would love this product to be installed to compliment the apartments.
    Please ass me to the mailing list.

  52. Wing says:

    Can’t believe I stumbled on this blog post looking for a way to integrate my ducted Mitsubishi air conditioning to a smart controller.

    I’ve tweeted Mitsubishi if they’re considering creating an adaptor/gateway for their older systems, but don’t think they’re interested in backward compatibility.
    Sadly my Mitsubishi (2009) is too old to plug in their new CN105 Wifi adapter 🙁

    Interested to see where you guys are at with your DIY Kit.

    I’m in Franklin, Canberra. Great to see Canberra-Queanbeyan locals leading the charge on this.

  53. Shankar says:

    Hope you are doing great.

    Am using 10 KW Samsung ducted system with three zone, can I install one nest thermostat or do I need to use three thermostat.

    Please let me know and add to your mailing list

  54. Clarence says:

    Hi I have a daikin reverse cycle and it’s is multi zone using afvantage air e-zone controller. I am also running a zwave system which I would like to integrate the aircon into. Unfortunately there is no solution from advantage air or my zwave (oomi) for this to occur.

    Will your solution enable that? I will be keen for such solution as all the zwave thermostat is only for 24v two stage HVAC. Thanks.

  55. Phil Smyth says:

    Exciting news! I currently have a Braemer SDHV16 unit installed in Stratford Victoria. Hopefully your device will make it possible for my installer to implement. I have just finished a new build and implementing an Openhab setep using z-wave. This will be one of the final pieces of the puzzle.

  56. Trent says:

    HI Chris,

    I have an upcoming build and would like to (if possible) use a NEST controller. There could be 2 (maybe 3) zones in the house – before we start , what would be the best system that would enable pairing with NEST and how could I get the zoning to work?


  57. Tom Bammann says:

    Hi Chris,
    This house we bought and moved the family into, has a failed ducted gas and faulty evap aircon. I’m looking to replace both, and get a single controller. Rinnai don’t have a phone app option, and bonaire have a phone app option, but neither of the reps that came to quote have even heard of nest controllers. Until your product comes to market, are you able to suggest a manufacturer to go with to increase my odds of getting actual smart control haooening? It’d break my heart ♥ to sink $7k to replacing both, only to then take the controller off the wall after they leave, enter the wiring codes into the nest compatability checker, and find it’s not compatible. I will try and seek wiring diagrams prior to purchase, but I’m having problems getting efficiency curves let alone wiring diagrams (facepalms, etc). Aside from recommending a manufacturer of equipment to be installed, are there any particular extra wires to tell the installer I want installed so that I can later avoid needing touch the 240V? I’m an Electrical Engineer in Adelaide, with a passion for home automaton, but real world constraint of wife pressuring me to select a system to get installed as it’s freezing inside with no heating! Time poor from my 2yo to have time to read all these forums, just need to know what manufacturer of system I should buy and what wires to have installed to save the hassle later! Please subscribe me also, and good luck with your product.

  58. AndyS says:


    I have an Daikin RZP100DV1 unit with a BRC1C51/61 controller.

    Can I expect your solution to assist with integration?

  59. Yuddy says:

    I’ve got a Samsung HVAC with a Polyaire Airtouch 2 zone controller. Any chance for a ecobee integration for this combination system? Cheers in advance.

  60. Jon says:

    Interested to see what you have. I’ve just started looking at better controlling my ducted Daikin system, with mods for fresh air delivery. Working in building automation myself, I thought this would be a no-brainer. Find something that interfaces with the existing Daikin inverter system, add to home LAN and away we go. Errr, not quite. SkyFi seemed to be a cheap option until researching more. Then starting to look at over priced control systems that have shiny brochures with no real tech info (yes not everyone is a tech head, but I want to know a bit more than ‘it should work’). So I’ve joined the mailing list with my fingers crossed.

  61. Boris says:

    Hi guys,

    Do you have any updates on your progress?

    I would love to replace BRC1E62 – Daikin in Sydney


  62. Reehan says:

    I have just come across your website after countless hours of searching for a solution. How is the progress going? since your last update. Cheers

  63. Hong says:

    Hi, I am not exactly sure which model of my heating/cooling system
    It’s a 2in1 heating and evap cooling. The controller is a summer breeze by bonaire (vulcan) wired directly. No battery. It has 4 wires (yellow brown red and orange). Can I connect them directly or via your DIY controller board?

  64. Glen says:

    Super interested in this solution!

    Has there been any update? I notice you haven’t updated since 30 May.

    Many thanks

  65. Aaron says:

    For all the Braemer and Brivis gas heating users out there, have a read up on the control boards for these systems. Most of them have 24VAC supply terminals and an external thermostat terminal. Then its just a matter of wiring (18AWG single core Cu) from there to your unit. I’d also recommend use the common (C) wire even though not required by Nest.

  66. Andy says:

    Hi there, any options to connect my Daikin standard inverter ducted system (RZQ125LV1/FDYQN125LAV1) to make it smarter and controllable from Internet/App/Alexa etc? Currently configured as a single zone for the whole house and is controlled by a single NavEase controller at the hallway/main living area transition. Manually flow adjustable round airflow outlets in each bedroom, non adjustable grill outlet in the main living area.

  67. Scott says:

    Add to mail list please. I believe my heater is simple enough, being old, Evap will be a problem, Bonaire Integra VSL75 with Climate technologies PNE2002 controller. On different note, I read there is a problem due to needing to enter a zipcode for time/weather info and that becomes a problem here. Is that correct?

  68. Ben says:

    G’day Chris, this is insane, years later and we’re all still seeking same answers. I’m in the process of building and just ordered an Ecobee4 but undecided what system(s) I should be installing ensuring maximum compatibility with a smart thermostat in general!?

  69. Tim says:

    Hey Chris,

    I just joined the mailing list and am super keen to get a nest, but can see there hasn’t been an update posted since May… is there any news you can share about the DIY boards you wrote about?


  70. Rahul Jhaveri says:

    Hi there,

    I am checking to see if there is any updates on the above product.
    The last thing, I got was an email with a survey which I completed.

    Looking forward to hearing from you.


  71. Brad Stocks says:

    Hi, I have a Daikin Ducted system and I am interested in your product. Can you please add me to the mailing list?


  72. Malcolm Rivett says:

    I would love to be on the mailing list for this. Its a disappointment that Nest, isn’t getting their hands dirty and developing something to help integrate Australian systems. A proxy of sorts like you are developing would be the easiest solution for Australian customers, my current system connects using a phone line connector.

    I was wondering if you could clarify something for me:

    Nest is compatible with both heating and cooling? to benefit of it controlling both systems would it need to be a combined heating and cooling unit? or can they be a seperate heating and cooling system. Have you had any luck integrating gas systems?

    I would also be interested in being part of the mailing list.

  73. Tony Tomkins says:

    Hi, I’m hoping you can help me with an Actron Air system when you get the kit built. We are just across the border from Canberra in NSW hopefully that’s close enough for you?

  74. Juan says:

    What is the latest update regarding the Daikin integration board? I’m keen on getting a smart thermostat (NEST).


  75. Ashley says:

    I’ve got a new 2 zone Hitachi system with rubbish Temperzone sat 3 controllers. I’ve signed up for your mailing list, but it seems to be a long time between updates. How are you going with the development of the diy board?


  76. Nathan C says:

    So, did this product ever come to market? It’s 2019 now.

    Wouldn’t mind replacing my Daikin Nav Ease controller with a Honeywell Lyric, Ecobee or Nest if possible.

    Any update? And if so, how might I go about getting this done up in Sydney.

  77. Michael says:

    Hi Chris,

    We are in the biginnings of a new build. Yet to choose an aircon system… we were looking at Advantage Air multi zoned WA based system. (We reside in WA) however would like to explore the Nest smart thermostat… We have decided to run with Nest Products as our Smart Home choice… what system would you suggest that would best suited to integrate with Nest.

    Is it possible to purchase Nest converted systems from you to then ship accross for a standard implementation.

    Appreciate all your work on this 🙂

    I wish Nest would come to the party and realise Australia is a huge potential market.

    Please add me to your mailing list regards Michael

    Thanks Chris

  78. Ian Trigg says:

    Ian Trigg, Norah Head, NSW Please add me to your mailing list.
    I am in process of getting 2 Mitsubishi Bronte WiFi option inverter aircon installed. 8kw & 5Kw units.
    I have cathedral ceiling in main family room fitted with 2x Velux wifi control solar battery powered opening skylights.
    I am hoping to integrate a smart thermostat in family room to main A/C .
    I am looking to install skylight / door sensors and integrate so Aircon will respond to skylights / outside doors being left open. Nest or Ecobee 4 ? to marry into Apple Homekit?

  79. Jamen Porteus says:

    Wow, glad I stumbled across this. The world needs more integration engineers. I read your story with interest as I’m currently reverse engineering the communications to the wall controller on my Actron ESP ducted unit, so I can develop a translator for the Nest thermostat. Just a 4 wire ELV termination for the wall controls, so anyone could fit it 🙂

    • admin says:

      Hi Jamen

      I’d be interested to hear how you went with this.

      Contact me via our new website, and we can talk deeper about our findings!

  80. Leo says:

    Just came across this article. Like you I have been trawling the internet for some time. I own a Nest Thermostat and have a Daikin reverse cycle ducted A/C, installed only a couple of years ago. I recently just installed a WiFi unit to the A/C and can now access it and control it via a phone app. Works great but I always hoped to install the Nest. Can I do this now?

  81. Michael says:

    Hi, can you elaborate on the “different language” distinction?

    Smart thermostats all seem to use the same wiring scheme, R,Rc,W,Y,G,C.

    These are voltage supply, heat on, cooling on, fan, common. US HVAC systems may have a W2 or Y2 for two stage heating or cooling.

    How do Australian systems differ from this? From my understanding, these connections aren’t sending any kind of serial communication message down the line, they are simple open/close circuits.

    Is your intermediary device translating open/close circuits to serial commands?
    Is it an IR blaster?
    Does perform a different combination of open close circuits?
    Is performing some sort of voltage cut operation?

    I’m asking because I genuinely don’t know how the AC systems work here. In particular I’m interested in ducted whole home cooling with multiple zones.

  82. sagar says:

    Hi Chris,

    I am so intrested to get my ducted A/c work with Smart thermostat and contatcte ddirectly with Nest who gave up and said its hard to be done DIY. I am in sydney and have a Pioneer international Air conditioner

    would you be able to convert the thermostat to smart one


  83. Brett says:

    Just wanted to check could your solution work with brivis ducted heating and add on refrigerated cooling with multiple zones? I have been trying to find a way to get multi zones to work but ecobee could only be connected to one zone according to my electrician?

  84. James says:

    Hey Chris I’m in Brisbane and have a 5 zone ducted aircon with a BRC1D61 controller. I’m also keen to get a wifi enabled controller. Could you add me to your list pls

  85. Tech_bh says:

    I also have this problem. I have a ducted Daikin system and would love a ‘smart’ thermostat. Keen to see how this progresses


  86. Charlie says:

    I’m inerested! I’ve got a FDYQ125LBV1 Daikin on a single zone in my house and I’m keen for a Nest Thermostat, add me to the list.

    • admin says:

      Hi Charlie,

      We do have solutions for you if you still require them.

      Please don’t hesitate to contact us, or visit our new website,

  87. Steve says:

    Hi, I have a Daiken (about 8 years old) ducted system with only one zone setup. I’m very keen to go down the Ecobee route. Are you still planning on releasing a kit that can be fitted by my own electrician? I’m in Brisbane.

  88. Jamie says:

    Hi Chris,

    Sent you guys a email a couple months ago when I moved into my new (10 year old house) have a Daikcant 7 zone system or six zone third party switching. Hate that my Nest from my previous home is not on the wall and I’m looking at splitting up zones with extras Nest thermostats if that can be done. Let me know what options I have moving forward.


  89. Ben says:

    Is it possible to integrate a Bonair ducted heating and evaporative cooling to an Ecobee4 since it uses a proprietary comms cable ? I have managed to connect the ducted heating as it has the old 2 wire system on the MB3 board.

  90. Adam says:

    Just curious as to the status/timing of the DIY option for the Nest Controller.
    Being located in Perth, I am very interested and keen to install the controller I purchased a couple of years back in the hope to be able to get it installed and working.

  91. Stan Nowakowski says:

    Hi Chris, I’m hoping you can help me. I recently purchased a Nest Learning Thermostat, and was wondering if my Samsung Model AC090HCAFKH aircon is compatible with the Nest thermostat?
    The four wires I have in the Samsung controller are labelled F3 (blue), F4 (black), V1 (red) & V2 (white). They don’t appear to match anything in the Nest thermostat.
    My system has three zones controlled by a Zonemaster – if that could be managed by the Nest, then that’d be a bonus.

  92. Carter says:

    So even though you are based in Canberra, I can still get my local HVAC technician to make my system compatible with a smart thermostat?

  93. Jamal says:

    I received an email today from EzLink which says its a device that would let any Daikin or Fujitsu A/C connect to a smart thermostat of my choice. Just wondering if this is the DIY device you guys have been working on? Thank you!

  94. Trav123 says:

    Nest works straight out of the box with a 10 year old Brivis buffalo with no problems.
    You just need to make sure you have a “c” wire, and solid core thermostat wire.
    I’ve been using mine like this for over a year with no problems.

    • admin says:

      Hi Trav,

      Yes, you are correct, Very Clever!

      Our unit is designed for reverse cycle refrigeration systems of which the brivis unit is not.

      We too have installed a multitude of smart thermostats directly to gas heaters without any issues.

      If I can help any further, please don’t hesitate to contact me.

  95. Babak says:

    Hi Chris,
    I am in Melbourne and was reading about integration of smart thermostats with current HVAC systems available in Australia and bumped into your page. I read through it and found really interesting stuff here and also took a look at your finished product which is interfaced with the HVAC control systems. So now my question is what the benefit of your solution is over those products already available in the market which copy the HVAC systems’ infrared controller signals (e.g. which eliminates all electrical works and make the whole thing DIY and far cheaper. I don’t judge your product but I am looking for the areas that potentially only your system works or at least works better. Regards,

    • admin says:

      Hi Babak,

      The Sensibo style system work very well. As you are aware, they send signals via Infrared. For this, to work you require an infrared receiver. Unfortunately most Ducted A/C units don’t come equipped with this technology.

      Our unit is designed for Ducted units that have a hard-wired Wall controller!

      If i can assist any further, please don’t hesitate to contact me

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