# \[App\]\[Pro\] Atlantic Cozytouch Plus **URL:** \ **Category:** Apps\ **Created:** [July 10, 2026, 2:52pm UTC](https://community.homey.app/t/app-pro-atlantic-cozytouch-plus/157096 "2026-07-10T14:52:58Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![AlexRedwood](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/alexredwood/32/34032_2.png) [@AlexRedwood](https://community.homey.app/u/AlexRedwood)\ **Post date:** [July 10, 2026, 2:52pm UTC](https://community.homey.app/t/app-pro-atlantic-cozytouch-plus/157096/1 "2026-07-10T14:52:58Z")
**Atlantic Cozytouch Plus — v1.5.2** A quick update on where the app stands. It’s been renamed to **Atlantic Cozytouch Plus** to avoid confusion with the other Cozytouch app in the store. **What the app does now** Two device types, both paired with just your Cozytouch account — no extra hardware. **Water Heater** — works with both Atlantic cloud platforms. The current Cozytouch generation (Explorer V5, newer Calypso, Thermor Aeromax and Malicio, Atlantic Linéo Connecté) _and_ older units on the Overkiz backend, including the Calypso V4 generation. The app signs in to both during pairing and lists whatever it finds. Controls on/off, hot-water setpoint, tank temperatures (top/bottom where fitted), heating modes, Boost, electric-backup status, Away mode, energy and signal. **Air Conditioner / Heat Pump** — Cozytouch air conditioners and Alfea Extensa Duo heat pumps. Mode (off / auto / heating / cooling / drying / fan only), setpoint, fan speed, air direction, quiet mode and energy. Heating and cooling each have their own setpoint and limits, and the app writes to whichever applies to the current mode. Detection is capability-based rather than model-based, so a unit that isn’t listed by name still pairs as long as it exposes a mode or a setpoint. Each device only shows the modes it actually supports — a Linéo won’t offer a Programmed mode it can’t perform. Energy shows up in Insights and the Energy dashboard, and there are 22 Flow cards (9 triggers, 5 conditions, 8 actions). **Changelog** - **1.5.2** — Added support for the Linéo water heater. Devices now only show the heating modes they actually have. - **1.4.6** — Added air conditioners and heat pumps, and made the buttons on the device screen easier to read. - **1.3.0** — Added support for older water heaters on the Overkiz platform, such as the Calypso V4 generation. - **1.2.2** — New icons and images. - **1.2.1** — Various small improvements. - **1.2.0** — Added support for more Atlantic water heaters. - **1.1.1** — Energy usage now appears in Insights and the Energy dashboard. Values refresh more reliably. - **1.1.0** — Improved the device screen and added energy usage. - **1.0.1** — Fixed water heaters not showing up when adding a device. - **1.0.0** — First release. **A note on testing** The water heater side is validated against real hardware (an Explorer V5). The **air conditioner, heat pump and Overkiz** support is built from the published capability catalogue but hasn’t been verified on real devices yet — treat those as experimental. If you own one of these and something reads oddly, please reply: with a capability dump I can usually correct the mapping the same day. Community app, not affiliated with Atlantic. Feedback and bug reports welcome. !!! Note !!! Due to the big amount of changes, you’ll have to add your boiler again. Sorry, couldn’t be avoided. > **[Atlantic Cozytouch Plus | Homey](https://homey.app/en-us/app/nl.alexredwood.cozytouch/Atlantic-Cozytouch-Plus/test/)** > > Comfort at home, in control from anywhere. ---
**Author:** ![OH2TH](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/oh2th/32/111414_2.png) [@OH2TH](https://community.homey.app/u/OH2TH)\ **Post date:** [July 10, 2026, 6:51pm UTC](https://community.homey.app/t/app-pro-atlantic-cozytouch-plus/157096/2 "2026-07-10T18:51:49Z")
There is @Nicolas_YDDER also working on an apo for Atlantic Cozytouch: > **[Atlantic Cozytouch | Homey](https://homey.app/en-us/app/com.nicolasydder.cozytouch/Atlantic-Cozytouch/test/)** > > Control your Atlantic heating devices via Cozytouch ---
**Author:** ![AlexRedwood](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/alexredwood/32/34032_2.png) [@AlexRedwood](https://community.homey.app/u/AlexRedwood)\ **Post date:** [July 10, 2026, 7:15pm UTC](https://community.homey.app/t/app-pro-atlantic-cozytouch-plus/157096/3 "2026-07-10T19:15:55Z")
That one hasn’t been working with the V5 boilers from day one and it’s not being updated anymore by the looks of it. Hence the reason i made one. ---
**Author:** ![Nicolas\_YDDER](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/nicolas_ydder/32/100810_2.png) [@Nicolas\_YDDER](https://community.homey.app/u/Nicolas_YDDER)\ **Post date:** [July 10, 2026, 7:23pm UTC](https://community.homey.app/t/app-pro-atlantic-cozytouch-plus/157096/4 "2026-07-10T19:23:40Z")
Hi all, Really happy to see emulation around Cozytouch here. I have limited access to Atlantic products so I will be happy to open everyone as GitHub contribution to not be the single point of failure. So I can open access to the code if you want to continue with me the development. I strongly suggest to avoid multiple initiative for confusion for the end user. If I have to migrate all my code to yours it’s not an issue at all. ---
**Author:** ![AlexRedwood](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/alexredwood/32/34032_2.png) [@AlexRedwood](https://community.homey.app/u/AlexRedwood)\ **Post date:** [July 10, 2026, 7:37pm UTC](https://community.homey.app/t/app-pro-atlantic-cozytouch-plus/157096/5 "2026-07-10T19:37:19Z")
Hi Nicolas, Are you still actively working on the app? There hasn’t been a reply since April 27th, and the last update was two months ago. It also looks like DHW boilers aren’t working at all currently. I’m all for keeping things simple, and I’d prefer just one Atlantic/Cozytouch app. Feel free to merge my Cozytouch code — I won’t be actively developing it further, only making occasional improvements, and I have no interest in adding support for more Atlantic products. I honestly built it just for myself, so I could control my own boiler, but I updated it today and it should now work with all Atlantic Cozytouch-connected boilers. Let me know what you think. Best regards, ---
**Author:** ![Gerrit\_Verschoren](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gerrit_verschoren/32/174304_2.png) [@Gerrit\_Verschoren](https://community.homey.app/u/Gerrit_Verschoren)\ **Post date:** [September 1, 2026, 8:04pm UTC](https://community.homey.app/t/app-pro-atlantic-cozytouch-plus/157096/6 "2026-09-01T20:04:48Z")
Hi, I just installed a new Atlantic Linéo boiler. Homey gives the error: `No compatible devices found - modelId 1957`. Could you please add support for this modelId?" ---
**Author:** ![AlexRedwood](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/alexredwood/32/34032_2.png) [@AlexRedwood](https://community.homey.app/u/AlexRedwood)\ **Post date:** [September 3, 2026, 10:30am UTC](https://community.homey.app/t/app-pro-atlantic-cozytouch-plus/157096/9 "2026-09-03T10:30:21Z")
![Widget](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/e/c/ec2f081007eb5fa76a0fa2f45d704402e42adc38.jpeg) Next update: Widgets. ---
**Author:** ![Sara\_DS](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sara_ds/32/174532_2.png) [@Sara\_DS](https://community.homey.app/u/Sara_DS)\ **Post date:** [September 17, 2026, 3:01pm UTC](https://community.homey.app/t/app-pro-atlantic-cozytouch-plus/157096/10 "2026-09-17T15:01:04Z")
Hello Alex, Nicolas, everyone, @AlexRedwood @Gerrit_Verschoren I do not use Homey, but I am investigating the Atlantic Magellan API for the same Linéo model mentioned in this topic: - Linéo Connecté MP 100L 2250W, modelId 1957, productId 6 Your app description says that Linéo heating modes are supported. Could you tell me which Magellan request or writable capability your app uses to switch this model to Manual mode? The official Cozytouch app returns the heater from long-term Absence directly to Manual, but a setup PUT with:{“absence”: {}} leaves my heater internally in Away: - 288 = 1 - 312 = 7 (degrees) - 337 = 1 True Manual mode is: - 288 = 2 - 312 = 50 (degrees) - 337 = 6 Direct writes to capabilities 22, 87 and 226 returned NoCapabilityImplementationFound for productId 6. I am just trying to identify the exact Magellan request(s) used for Manual mode on modelId 1957. Thank you so much in advance. ---
**Author:** ![AlexRedwood](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/alexredwood/32/34032_2.png) [@AlexRedwood](https://community.homey.app/u/AlexRedwood)\ **Post date:** [September 19, 2026, 11:25am UTC](https://community.homey.app/t/app-pro-atlantic-cozytouch-plus/157096/11 "2026-09-19T11:25:51Z")
I don’t have access to a Lineo and i’m not sure if i have 100%, however; Values: `"0"` = Manual `"3"` = Eco+ `"4"` = Programmed. After the POST returns an executionId, the app polls `GET /magellan/executions/{executionId}` until the state is 3. There is no other request. The app does not write 288, 312 or 337, and it does not use a setup PUT to change the mode as far as i can tell. For leaving Absence the app does a `PUT /magellan/v2/setups/{setupId}` with the existing setup fields and `"absence": {}`, then writes `"[0,0]"` to the away timestamps capability (222 or 226, whichever the device exposes) ---
**Author:** ![AlexRedwood](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/alexredwood/32/34032_2.png) [@AlexRedwood](https://community.homey.app/u/AlexRedwood)\ **Post date:** [October 9, 2026, 8:02am UTC](https://community.homey.app/t/app-pro-atlantic-cozytouch-plus/157096/12 "2026-10-09T08:02:25Z")
Version 1.8.3 is out. A device is now only marked as unreachable after three failed updates in a row, so a short hiccup in the Atlantic cloud no longer greys out the tile. The setting for the meter reading on 1 January has moved to a new internal id to comply with Homey store rules; if you already entered a value it is carried over automatically. The log line the app writes on every update now also includes the electric element and the hot water availability, which makes diagnostics reports a lot more useful when something looks off. Special thanks to the user who sent in a diagnostics report; it led to this release.