The Qingping Air Quality Monitor Gen 2 is praised for its accurate sensors, including a high-quality Sensirion SCD40 CO2 sensor and replaceable PM2.5 sensor, making it one of the top performers in its class. Reviewers noted its ability to display multiple air quality metrics and compatibility with both Qingping+ and Mi Home apps. However, the device suffers from poor battery life and connectivity issues with the app, which can make it frustrating to use. It's best suited for users who prioritize accuracy and sensor quality over battery longevity and app reliability.
Full review
Sensor Performance and Accuracy
The Qingping Air Quality Monitor Gen 2 delivers impressive sensor performance with a suite of high-quality components that set it apart in the mid-range air quality monitor category. The device employs a Sensirion SCD40 NDIR CO2 sensor with an accuracy of ±(50 ppm + 5% of reading), which is significantly better than many competitors in its price range. According to Air Purifier First, the monitor achieves a PM2.5 accuracy of ±10 μg/m³, placing it among the top performers in its class. TechRadar's testing confirmed that the device maintains consistent readings across multiple pollutants including PM2.5, PM10, CO2, eTVOC, temperature, humidity, and noise level. The GrandWay particle sensor used for PM detection is particularly praised for its reliability and accuracy. However, some reviewers noted that the PM10 readings are calculated algorithmically based on PM2.5 values, which may introduce slight inaccuracies compared to direct measurements.
Professional testing by Air Purifier First revealed that the Qingping Gen 2's sensor suite delivers an accuracy rating of 9.5 out of 10, with a measured pollutants score of 9.4. The device's ability to accurately track PM2.5 levels was confirmed through side-by-side comparisons with government monitoring stations in Beijing, where the monitor showed deviations of only 7.9 micrograms on average. The monitor also features a replaceable PM2.5 sensor, allowing users to extend the device's lifespan without replacing the entire unit. The inclusion of Sensirion SGP40 for eTVOC detection provides comprehensive indoor air quality monitoring. However, the CO2 sensor's automatic calibration feature has been a point of discussion, with some users reporting that the automatic calibration period cannot be adjusted, though manual calibration is available.
Design and Build Quality
The Qingping Air Quality Monitor Gen 2 represents a significant upgrade in design from its predecessor, featuring a larger 4-inch touchscreen display that enhances usability and data visibility. The device maintains a premium build quality with a sleek, modern aesthetic that fits well in any indoor environment. According to BreatheSafeAir reviews, the monitor's design prioritizes user experience with an intuitive interface that makes navigating through different data points straightforward. The device's dimensions are 2.9 x 4.1 x 3.3 inches (7.4 x 10.4 x 8.5 cm) and weighs 0.56 pounds (0.25 kg), making it compact enough for desk placement while still providing sufficient screen real estate for clear readings. The inclusion of a built-in fan for more accurate real-time readings is a notable feature that differentiates it from many competitors in the market.
The monitor's build quality is described as premium throughout multiple reviews, with attention to detail evident in both materials and finish. The touch screen interface is responsive and user-friendly, allowing for easy navigation between different data points. The device includes an alarm clock function and supports multiple connectivity options including the Qingping+ app and Mi Home app, enabling integration with Xiaomi ecosystem devices. The replaceable PM2.5 sensor design is a significant improvement over previous models, allowing users to extend the device's lifespan without purchasing a new unit. However, some reviewers have noted that the device's battery life remains a concern, with estimates of only 4-6 hours of operation before requiring recharging.
Battery Life Concerns
Battery performance remains one of the most significant drawbacks of the Qingping Air Quality Monitor Gen 2, with multiple reviewers reporting severely limited operational time. According to Reddit user Ethan, the device's battery life has significantly deteriorated since initial release, with actual usage often lasting only 1-2 hours instead of the advertised 4-6 hours. This issue has been consistently reported by users who have purchased the device, with some noting that continuous charging is required to maintain functionality, which could potentially damage the battery over time. The device's power source is listed as battery (up to 4 hours) plus USB-C, but practical testing shows this estimate is often far exceeded.
The battery longevity issue has been a persistent problem for users, with some reporting that their devices require constant charging to function properly. Ethan noted that he initially found the battery life acceptable but has since experienced significant degradation. Users have expressed concerns that the device's need for continuous charging may eventually lead to battery failure. The manufacturer's specifications indicate a maximum battery life of 4 hours, but real-world testing consistently shows much shorter operational periods. This limitation significantly impacts the device's portability and practicality for users seeking truly wireless monitoring solutions.
App Connectivity and Firmware Issues
Connectivity with the Qingping+ app has proven problematic for many users, with multiple reports of connection difficulties and firmware update failures. According to a Reddit user who purchased three units, the first two devices (white color) connected successfully to the app after initial setup, but the third device (black color) failed to connect despite successful WiFi setup. The user reported waiting 30 minutes for the app to connect before giving up, with the device ultimately being returned due to firmware update limitations. This issue appears to be related to API calls being made to defunct servers, as reported by the manufacturer's support team. The device supports both Qingping+ and Mi Home apps, but the app experience has been inconsistent across different units and firmware versions.
Firmware update issues have been a recurring problem for some users, with one reviewer reporting that despite successful WiFi connection, the device would not connect to the app for firmware updates. The support team indicated that certain API calls were being made to outdated servers, causing delays in the connection process. Users have noted that while the device can connect to WiFi, the app connection process can take up to 5 minutes, which is significantly longer than expected. These connectivity issues have led some users to avoid purchasing the device, particularly those who rely on app-based features for monitoring and automation. The inconsistency in firmware updates has raised concerns about long-term device support and functionality.
What Reviewers Loved
Multiple reviewers have praised the Qingping Air Quality Monitor Gen 2 for its exceptional accuracy and comprehensive sensor suite. Air Purifier First gave the device a 9.4/10 rating for accuracy, highlighting its ability to measure seven different data points including PM2.5, PM10, CO2, eTVOC, temperature, humidity, and noise level. The monitor's ability to display more than seven data points, both on the screen and in the smart app, was particularly appreciated. Users noted that the device uses reliable and accurate sensors, with the Sensirion SCD40 CO2 sensor providing high-quality readings. The replaceable PM2.5 sensor design is another feature that reviewers found valuable, allowing users to extend the device's lifespan without purchasing a new unit.
The user interface and display quality have received high praise from reviewers, with BreatheSafeAir awarding the device a ★★★★★ rating for user experience. The large 4-inch touchscreen display makes it easy to view indoor air quality at a glance, and the intuitive interface allows for seamless navigation between different data points. The built-in fan for more accurate real-time readings is another appreciated feature. Users have also appreciated the device's compatibility with multiple apps including Qingping+, Mi Home, and Apple HomeKit, making it versatile for different smart home ecosystems. The device's ability to provide comprehensive air quality data with minimal setup requirements has made it popular among both casual users and enthusiasts.
Where It Falls Short
Despite its many strengths, the Qingping Air Quality Monitor Gen 2 suffers from several significant drawbacks that impact its overall value proposition. The most critical issue remains the severely limited battery life, with users reporting only 1-2 hours of operation instead of the advertised 4-6 hours. This limitation forces users to keep the device constantly plugged in, which can lead to battery degradation over time. The device's connectivity issues with the Qingping+ app have also been a major concern, with some users unable to complete firmware updates due to API server problems. These connectivity issues have led to device returns and user frustration.
The automatic calibration feature for the CO2 sensor has been criticized for its lack of configurability, with users unable to adjust the automatic calibration period despite the device allowing users to disable the feature. Additionally, the PM10 readings are calculated algorithmically rather than measured directly, which may introduce inaccuracies. The device's reliance on continuous charging for practical use limits its portability and makes it less suitable for users seeking truly wireless monitoring solutions. Some reviewers have also noted that the screen only displays one metric at a time, requiring users to manually switch between different data points, which can be inconvenient for quick assessments.
Who It's Best For
The Qingping Air Quality Monitor Gen 2 is best suited for users who prioritize accuracy and comprehensive sensor data over portability and battery life. It's particularly ideal for those who want a high-quality indoor air quality monitoring solution that integrates well with smart home ecosystems, especially those using Xiaomi devices or Apple HomeKit. Users who are willing to keep the device constantly plugged in and don't mind the app connectivity issues will find the monitor's accuracy and feature set highly valuable. The device is also recommended for those who value the replaceable PM2.5 sensor feature, which allows for extended device lifespan. The monitor's ability to provide detailed air quality data including PM2.5, PM10, CO2, eTVOC, temperature, humidity, and noise level makes it suitable for users who want comprehensive indoor air quality analysis.
This device is not recommended for users who require truly portable monitoring solutions or those who frequently move the device between locations. The severely limited battery life makes it impractical for users who need wireless operation or who prefer to place the device in multiple locations throughout their home. Users who rely heavily on app-based features and firmware updates may find the connectivity issues frustrating, particularly if they want to take advantage of the latest software improvements. The device is also not ideal for users who are concerned about long-term battery degradation due to constant charging requirements. Those seeking a budget-friendly solution with basic air quality monitoring capabilities might find the Qingping Lite model more suitable, as it offers similar accuracy at a lower price point.
How It Compares to Alternatives
When compared to other air quality monitors in its price range, the Qingping Air Quality Monitor Gen 2 stands out for its exceptional accuracy and comprehensive sensor suite. Air Purifier First's testing showed that it ranks among the top performers in terms of accuracy, with a 9.5/10 rating for accuracy and 9.4/10 for measured pollutants. Compared to the Qingping Lite model, the Gen 2 offers additional features including PM10 measurement and noise level monitoring, though it lacks the VOC sensor that the Lite model includes. The device's accuracy has been validated against government monitoring stations in Beijing, where it showed deviations of only 7.9 micrograms on average, outperforming many more expensive alternatives. However, the Gen 2's battery life issues and app connectivity problems set it apart from competitors who offer more reliable long-term operation.
In comparison to more expensive alternatives, the Qingping Gen 2 provides exceptional value for money, with accuracy that rivals devices costing significantly more. Smart Air's testing showed that the Qingping monitors outperformed expensive air quality monitors such as the AQMesh ($7,800), Naneos Partector ($7,000), and Met One E-SAMPLER ($5,500) in terms of accuracy while costing less than $200. The device's ability to integrate with multiple smart home ecosystems including Xiaomi Mi Home and Apple HomeKit makes it more versatile than many competitors. However, the Gen 2's connectivity issues and battery limitations make it less competitive compared to devices that offer more reliable long-term performance and better user experience.
Strengths
- +Uses high-quality Sensirion SCD40 NDIR CO2 sensor with accuracy of ±(50 ppm + 5% of reading)
- +Displays seven data points including PM2.5, PM10, CO2, eTVOC, temperature, humidity, and noise level
- +Features replaceable PM2.5 sensor for easy maintenance without replacing the entire device
- +Works with both Qingping+ app and Mi Home app for integration with Xiaomi air purifiers
Watch-outs
- −Poor battery life lasting only up to 4 hours, often much less
- −Connectivity issues with the app including long wait times and firmware update failures
How it compares
The Qingping Gen 2 features the high-quality Sensirion SCD40 CO2 sensor, which outperforms the CO2 accuracy of the Awair Element and Atmotube PRO 2, but it suffers from poor battery life compared to the Temtop M10, which offers up to 6 hours of battery operation. While it provides replaceable sensors, the app connectivity issues make it less reliable than the AirGradient One, which offers seamless integration and better overall user experience.
Who this is for
At a glance: accuracy-focused buyers.
Why you’d buy the Qingping Air Quality Monitor Gen 2
- Uses high-quality Sensirion SCD40 NDIR CO2 sensor with accuracy of ±(50 ppm + 5% of reading).
- Displays seven data points including PM2.5, PM10, CO2, eTVOC, temperature, humidity, and noise level.
- Features replaceable PM2.5 sensor for easy maintenance without replacing the entire device.
Why you’d skip it
- Poor battery life lasting only up to 4 hours, often much less.
- Connectivity issues with the app including long wait times and firmware update failures.
Rating sources
“Smart Air tested and reviewed the QP Pro and QP Lite air quality monitors and found an impressive and accurate budget-friendly air quality monitor.”
Our 4.6 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.
