Extech AN100 CFM/CMM Mini Thermo-Anemometer, Air Flow and Velocity | Air flow CFM/CMM, air velocity, ambient temp, 20-point average, stored area

The Extech AN100 CFM/CMM Mini Thermo-Anemometer garners a mixed reception from users, showcasing its utility for HVAC professionals and enthusiasts while also revealing several areas of concern that users have encountered. Many customers appreciate the device's performance in measuring airflow, noting its effectiveness for HVAC balancing and optimization tasks. Users have found the accuracy of both the CFM (Cubic Feet per Minute) readings and temperature measurements to be generally satisfactory. The device is also lauded for its easy setup, simplistic functionality, and its memory storage feature that allows users to store multiple measurements—a beneficial addition when checking various air vents. However, despite these positives, several reviewers highlight substantial quality concerns. A recurring issue is the perceived fragility of the device, particularly regarding the plastic Construction, which feels thin and toy-like in comparison to other professional measuring tools. Several users reported malfunctioning components, such as a non-functioning fan wheel and a problematic sensor cord that required wiggling to get readings. There are also aesthetic concerns related to the assembly, with one reviewer pointing out that screws appeared stripped and the battery cover did not sit flush. In summary, the Extech AN100 provides valuable functionality for those needing to assess air movement, but quality control issues detract from the overall experience, leading some users to question its durability and reliability over time. **