heise+ Mobile fans in test: small rotors against the great heat

A German news outlet has published a detailed review of six compact battery-powered fans, highlighting their effectiveness in cooling during hot weather while pointing out potential drawbacks such as noise levels and performance limitations. The article, titled “Mobile Ventilatoren im Test: Kleine Rotoren gegen die große Hitze,” appears in the heise+ section of heise online, a well-known technology publication in Germany. It focuses on affordable, portable fan models that can be used both indoors and outdoors, offering users a convenient alternative to traditional air conditioning systems. The test included six different models, covering desktop, handheld, and neck-mounted variants, as well as one mini-air cooler. Each device was evaluated based on airflow strength, noise level, and battery life. According to the report, some of the cheaper models require compromises in build quality and sound output, which could affect user experience. The article also mentions that certain manufacturers may exaggerate claims regarding battery capacity, suggesting that buyers should carefully examine specifications before purchasing. One of the key findings of the test is that while these small fans can provide immediate relief from heat, they often operate at high decibel levels, potentially making them uncomfortable for prolonged use. Additionally, the report notes that some models struggle with consistent airflow, especially when compared to more expensive alternatives. The authors emphasize the importance of proper maintenance, including regular cleaning to ensure optimal performance and hygiene. The review also includes a special feature on a DIY solution for building a custom fan, tailored to suit different seasons. This hands-on approach allows users to create a personalized cooling system, which could be particularly useful for those looking to avoid the cost of commercial products. The article further explores the broader context of personal cooling solutions, noting that rising temperatures have increased demand for portable and energy-efficient devices. In addition to the fan review, the heise+ section features other tech-related content, such as a comparison of four Intel Arc Pro B70 graphics cards for AI workloads, an analysis of the costs associated with a Skoda Elroq electric vehicle, and a guide on using a Wärmepumpe (heat pump) for cooling purposes. There is also coverage of a retro computing project that connects an old Commodore 64 computer to the internet via an ESP32 microcontroller, and a review of macOS applications designed to help users manage duplicate photo files. Another segment provides an overview of APS-C lenses from major camera brands, including Canon, Fujifilm, Nikon, Sony, and L-mount systems. The piece highlights the growing significance of third-party manufacturers like Sigma, Tamron, and Viltrox in the market, indicating a shift in consumer preferences towards more affordable yet high-quality options. Overall, the heise+ issue offers a diverse range of technical insights, catering to readers interested in hardware, software, and sustainability topics. The fan review serves as a practical example of how consumers can make informed choices in the face of rising summer temperatures, while the other articles contribute to a broader discussion on technological innovation and its real-world applications.