Stiftung Warentest: Smart home systems in the test – what really works?

Stiftung Warentest: Smart home systems in the test – what really works?

In the exciting world of smart home systems, Stiftung Warentest has examined 14 different home automation systems. On July 16, 2025, it became clear that not each of these systems can meet all expectations. So reported Radio Bielefeld that all systems tested have the ability to integrate devices from different manufacturers via different radio interfaces.

But what actually makes a good smart home system? The central component is the hub, which serves as a radio and control center. These hubs are available in different versions - either as standalone devices or integrated into WiFi routers, TV streaming boxes or smart speakers, as the test results show. The cost of the hubs tested was between 50 and 400 euros, which represents a wide price range for those interested.

The test highlights

Stiftung Warentest has checked the systems with regard to installation, operation, compatibility and behavior in the event of internet failures. The testers found that some systems have real “communication problems,” especially when there are impending Internet outages. Some systems require a constant internet connection, which can be a problem for users who value privacy. Home Assistant and Homey took first place in the rankings with an overall grade of 2.3, followed by Samsung Smartthings (2.4) and Apple Home (2.5) - a remarkable achievement, as it is Test.de determines.

Particular attention was paid to user-friendliness: Homey scored points with its ease of use and easy setup, while Home Assistant stood out for its robustness and independence from internet connections. This could particularly appeal to those interested in data protection who value control over their own data.

Advantages and challenges of smart home systems

The advantages of these systems are hard to ignore. They not only offer increased comfort through control via smartphone or voice commands, but also increased energy efficiency through smart thermostats and lighting systems. Security improvements through intelligent alarm systems and surveillance cameras increase the protection of your home. However, there are also challenges to be addressed Badenova points out. Privacy and security concerns are common, as are high acquisition costs and technical difficulties in installation and management.

Smart home technology has made significant progress in recent years. From the first attempts in the 1960s, to the X10 protocol in the 1970s, to the breakthrough of mobile devices and the Internet of Things (IoT) in the 2000s - the development is enormous. Artificial intelligence and machine learning are playing an increasingly important role, further improving the functions of these systems.

Choosing the right smart home system is a challenge for many users. Important criteria are not only costs and compatibility with existing devices, but also scalability, user-friendliness and security and data protection aspects. These points can be crucial, especially when renovating old buildings.

The future of smart home systems looks promising. As technologies advance and we continue to connect with other areas, such as electric vehicles, we can look forward to seeing what innovative solutions come our way next.