Head to head · Air monitors
Qingping Air Monitor 2 vs Aranet4 Home
They answer different questions.
The Qingping shows PM2.5 and CO₂ together on a touch screen, so it tells you whether smog is getting in. The Aranet4 measures only CO₂, very accurately, and runs for years on two AA batteries. For smoggy cities, the Qingping; for checking ventilation, the Aranet4.
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Side by side
| Figure | Qingping Air Monitor 2 | Aranet4 Home |
|---|---|---|
| Price | $149.99 at qingping.co | $189.00 at aranet.com |
| Measures | PM2.5, PM10, CO₂, eTVOC, temperature, humidity, noise | CO₂, temperature, humidity, air pressure |
| CO₂ range | 400–9,999 ppm | — |
| PM range | 0–999 µg/m³ | — |
| Screen | 4-inch IPS touch screen, automatic brightness | E-ink, readable in daylight |
| Connectivity | Wi-Fi (2.4 and 5 GHz), Qingping+ app | — |
| Power | USB-C, with a 1,800 mAh battery for a few hours unplugged | — |
| Sensors | Sensirion inside (maker's announcement); the PM sensor can be replaced | — |
| CO₂ sensor | — | NDIR, 0–9,999 ppm, ±(30 ppm + 3%) |
| Indicator | — | Colour light: green below 1,000 ppm, yellow to 1,400, red above |
| Battery | — | 2 × AA, up to about 4 years |
| App | — | Bluetooth, with up to 90 days of history |
Choose the Qingping Air Monitor 2 if…
- Checking that a purifier is keeping up
- Deciding when to air a room shut against smog
- Skip it if: you need it to run on battery for days: keep it plugged in
Choose the Aranet4 Home if…
- Bedrooms, classrooms and offices kept shut against smog
- Anyone who wants an accurate CO₂ reading without a cable
- Skip it if: you want to see PM2.5: it doesn't measure particles
Questions
- Which is better, the Qingping Air Monitor 2 or the Aranet4 Home?
- They answer different questions. The Qingping shows PM2.5 and CO₂ together on a touch screen, so it tells you whether smog is getting in. The Aranet4 measures only CO₂, very accurately, and runs for years on two AA batteries. For smoggy cities, the Qingping; for checking ventilation, the Aranet4.
- Which costs less?
- At the prices shown here, the Qingping Air Monitor 2 ($149.99 at qingping.co) costs less than the Aranet4 Home ($189.00 at aranet.com). Store prices change often, so check both before you buy.
Figures are the independent ratings (AHAM, Energy Star, NIOSH) or the makers' own; each price names the shop it's from. Every air monitor in the shop →