Huma-i
Huma-i HI-150
$130
Huma-i HI-150 Overview
The Huma-i HI-150 is a mid-range CO2 monitor that tracks CO2, PM2.5, VOC, Temperature and Humidity. It uses a NDIR sensor — the technology we recommend for reliable CO2 readings — with a stated accuracy of ±75 ppm across a 0-5000 ppm measurement range. At $130, it is aimed at on-the-go monitoring and home use.
In day-to-day use, the HI-150 offers an onboard display, so you can read levels at a glance without opening an app, plus Bluetooth connectivity for logging trends and setting alerts, plus a portable design with 10 hours of battery life, making it practical to carry between rooms or when travelling.
Best For
Full Specifications
| Price | $130 |
| Sensors | CO2, PM2.5, VOC, Temperature, Humidity |
| Sensor Type | NDIR |
| Connectivity | Bluetooth |
| Display | Yes |
| Portable | Yes |
| Battery Life | 10 hours |
| CO2 Accuracy | ±75 ppm |
| CO2 Range | 0-5000 ppm |
Pros & Cons
Pros
- ✓True NDIR CO2 sensor (not an eCO2 estimate)
- ✓Multi-parameter monitoring: CO2, PM2.5, VOC, Temperature, Humidity
- ✓Built-in display for at-a-glance readings
Cons
- ✗Bluetooth only — no remote access when you are away from home
Compare this monitor with others using our Monitor Comparison Tool
Frequently Asked Questions
Is the Huma-i HI-150 accurate?+
The Huma-i HI-150 uses a NDIR sensor with a stated accuracy of ±75 ppm over a range of 0-5000 ppm. NDIR is the proven reference technology for consumer CO2 monitoring.
What does the Huma-i HI-150 measure?+
It measures CO2, PM2.5, VOC, Temperature, Humidity. CO2 is the key metric for judging ventilation — levels below 800 ppm indicate well-ventilated air.
Does the Huma-i HI-150 need WiFi?+
No. The Huma-i HI-150 uses Bluetooth for syncing with the app and shows readings on its built-in display.
Is the Huma-i HI-150 worth it in 2026?+
At $130, the Huma-i HI-150 is a solid choice for on-the-go monitoring and home use. Its NDIR sensor puts it ahead of cheaper eCO2 estimators. Compare alternatives in our monitor comparison tool before buying.
How long does the Huma-i HI-150 battery last?+
The Huma-i HI-150 runs for 10 hours, and its portable design makes it easy to move between rooms or take when travelling.