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LILJEBAGGE is the internal codename (and likely product name) for an upcoming IKEA smart radiator thermostat (Heizkörperthermostat / thermostatic radiator valve actuator). It is not yet officially released as of May 9, 2026.
It was accidentally leaked in the IKEA Home Smart app in late April 2026 due to a bug that temporarily exposed unreleased devices. It represents IKEA’s push into the major missing category in its growing Matter-over-Thread smart home lineup.
Leak Details and Timeline
- April 23–24, 2026: Users in the r/tradfri subreddit and German/Dutch smart home communities (homekits.de, techboys.de, chrissmart.de, tink.nl) noticed a new “Thermostats” category in the IKEA app while adding devices. It showed the name LILJEBAGGE, a product image, and model number E2497.
- The category and third-party thermostats (e.g., Eve) briefly became visible/usable before an app update removed everything.
- The name and image also appeared in the app’s source code/resources.
- IKEA has not commented officially. No product page, press release, or pricing exists yet on ikea.com.
This leak occurred alongside other codenames in the same app build, confirming IKEA is actively developing more Matter devices.
Design and Appearance
From the leaked app screenshot and descriptions:
- Compact, cubic form factor — small enough to fit on a standard radiator valve head.
- Minimalist IKEA aesthetic: Plain front with a row of simple white LEDs for status/display and one physical button.
- Resembles an enlarged version of the IKEA TIMMERFLOTTE temperature/humidity sensor.
- No rotary dial (unlike Eve Thermo), no large screen (unlike tado), and very tool-like/functional rather than decorative.
- Expected to be battery-powered with long life (similar to other recent IKEA sensors).
The design prioritizes affordability and simplicity over premium looks.
Expected Features and Specifications
Exact specs are not confirmed, but strong inferences come from the design, IKEA’s Matter strategy, and community analysis:
- Communication: Matter over Thread (primary). Works with the IKEA Dirigera hub (as Thread Border Router) or any Matter/Thread ecosystem (Apple Home with HomePod/Apple TV 4K, Google Home, Samsung SmartThings, Home Assistant via OpenThread Border Router, etc.). No mandatory cloud or subscription.
- Core Function: Actuates standard European thermostatic radiator valves (typically M30 × 1.5 thread or common push-pin types) by pressing/releasing the valve pin to control hot water flow. Replaces manual 1–5 numbered heads.
- Controls: Likely supports schedules, remote/app control, automations, and integration with room temperature sensors. Simple LED indicators for current/set temperature, battery, or connection status.
- Power: Battery-operated (probably AA or coin cells; users expect 2+ years like similar Zigbee/Matter devices).
- Compatibility:
- Most European panel radiators and many underfloor heating manifolds (if they use compatible thermostatic valves).
- May require valve adapters for older/non-standard systems.
- Not suitable for pure on/off valves without modification.
- Other expected capabilities: Local control via Matter, energy usage insights (if supported), voice control through major platforms, and potential PID or basic optimization algorithms.
Note: It is optimized for typical European hydronic heating systems. Performance in district heating or certain high-flow setups may vary (users have raised efficiency questions similar to other TRVs).
Pricing and Market Positioning
IKEA is expected to price it aggressively — typically 30–50% below competitors:
- Eve Thermo (5th gen, Matter): ~€60–90
- tado X / similar: ~€70–100+ (often with subscription for full features)
Projected price: Likely €30–60 per unit, with multipacks offering better value. This would make it one of the most affordable Matter-compatible radiator thermostats, filling the “budget but reliable” gap.
Related Leaked Products (Same App Bug)
- DUBBELKISEL: Matter-over-Thread LED driver for cabinet/furniture lighting (15W/30W variants; EU + North America versions; already Thread Group certified).
- BRANDHAKE: Likely a smoke detector (“Brand” = fire in Swedish).
- Others (names only): Solstal/Solstol (possibly smart lock or sun-related), Sommarplaga/Sommarplåga (possibly roller blind motor or air purifier), Längdmått, Lykaste, Mellangyllen.
These fit IKEA’s pattern of Swedish-inspired, functional names.
Community Reactions and Expectations
The leak generated significant excitement in smart home communities:
- r/tradfri threads (including “Possible Matter Thermostat LILJEBAGGE more images” and earlier “Matter Thermostats coming soon?”) show users eager for an affordable, no-subscription alternative to tado and Eve.
- Hopes for excellent Matter interoperability, long battery life, and easy setup.
- Concerns: Battery life in cold radiator environments, exact valve compatibility (Europe-focused?), advanced features (schedules, reporting), and whether it will support full system control (e.g., boiler integration via OpenTherm or similar).
- Positive notes on IKEA’s minimalist design and pricing philosophy.
Current Status (May 2026) and Outlook
- Still pre-release / in development.
- Likely launch window: Fall 2026 or heating season 2026/2027 (to coincide with demand).
- Part of IKEA’s broader 2025–2026 Matter-over-Thread expansion (21+ products already launched or announced, including lights, sensors, buttons, and remotes).
IKEA has not confirmed details, so all specs, pricing, and exact release date remain speculative until an official announcement.
Sources
- Primary leaks and discussions: Reddit r/tradfri (multiple threads April 2026), homekits.de, techboys.de, chrissmart.de, tink.nl, stadt-bremerhaven.de.
- IKEA’s Matter strategy context: Official IKEA newsroom (Nov 2025 announcement of 21 new Matter products) and subsequent coverage.
Bottom line: LILJEBAGGE looks like a classic IKEA move — a simple, affordable, Matter-native radiator thermostat that could make smart heating control accessible to far more people without expensive hubs or subscriptions. It’s one of the most anticipated unreleased IKEA smart home products right now.
If it launches with good battery life, broad valve compatibility, and solid Matter support, it could become a bestseller in the category.
But as long as we don’t have Matter Bindings and Scheduling, we have to rely on the manufacturer app. That’s why I’m using Tapo/Kasa KE100 TRVs (Matter bridged) for now and hope that the IKEA TRVs and SmartThings will support these features in the future.