Home Assistant, the leading open-source smart home platform, has added support for Matter temperature control devices in its latest beta update, released Wednesday.
Beta update 2025.8.0b0 extends Matter appliance support on top of current compatibility for cooktops, refrigerators, microwave ovens, and similar devices, helping Home Assistant catch up with competitors like SmartThings in this category. The feature is a community contribution from @lboue, a regular contributor to several open-source Matter projects.
What’s new in Home Assistant?
The key addition is support for Matter’s Temperature Control devices, which provides two configurable settings: one for setting a specific temperature in degrees, and another for setting a general level (like “low,” “medium,” or “high”).
In Home Assistant, these controls appear as sliders and dropdown selectors, allowing users to adjust compatible devices, such as ovens and refrigerators, more intuitively. Below are screenshots from the Matter Alpha and the developer’s testing environments, showing ovens, laundry washers, refrigerators, and cooktops.
This update rounds out Home Assistant’s Matter support for all device types that include temperature control capabilities. Smart kitchen and laundry appliances are expected to benefit the most. They should be controllable via device card or integrated into automations and scripts.
Open source is gaining momentum
Matter’s open ecosystem continues to foster new projects, some of which are gaining traction, such as Matterbridge(by @Luligu). Established platforms like Tasmota and Home Assistant are also expanding their reach with Matter integration.
Although many of these tools are not officially Matter-certified (with Home Assistant being a notable exception), they offer more flexible and powerful connectivity options for smart home enthusiasts. Thanks to Matter’s interoperability, these projects can now integrate directly with mainstream platforms, without the need for intermediate layers like Homebridge.
As these solutions mature, we may see an increase in ready-to-use, flashable devices hitting the market, offering a viable alternative to vendor-locked ecosystems. These community-driven devices avoid the downsides of proprietary platforms, such as limited updates or features gated behind vendor apps.
However, the alliance behind the Matter standard has no intention to waive certification fees for open-source projects, which could lead to potential issues if major platforms begin to restrict support for uncertified devices.
(Source: Home Assistant, Image Source: @lboue, Matter Alpha/Ward Zhou, CSA, Home Assistant)
