GoveeLife Smart Air Quality Monitor H5140 (CO₂)
editor’s pick85 out of 100 · Great · how we score
- Power
- Wall outlet via the included USB-C cable and adapter; no battery. Wattage not published (unverified). Source
- Performance & features: −4.2, strong, a step below the best
- Evidence & honest claims: −4.2, evidence is modest or mixed
- Durability & reliability: −4.2, no long-term reliability data, so neutral
- Trial, returns & warranty terms: −1.4, trial, return or warranty terms not verified or limited
- Minor (under 1 point each): ease of use
Maintenance & upkeep, Value vs category (3-year cost), Lock-in (required subscriptions only)
See our editor’s real readings with and without ventilation in Stale Bedroom Air: CO₂ and Your Sleep.
Who it's for: Anyone who sleeps with the door and window closed and wants to know if the air is getting stale.
Price: See current price on Amazon (checked Oct 20, 2026)
Membership: None: one-time purchase; any companion app is free. (not yet verified on the official site)
True 3-year cost: see current price on Amazon (no subscription)
Key specs
- NDIR CO₂ sensor (Sensirion SCD4x), stated accuracy ±(40 ppm + 5%) (seller listing)
- Shows CO₂, temperature, humidity; buzzer + app alerts at thresholds you set
- Night schedule dims the display and light bar
- Plug-in AC power; 2.4 GHz Wi-Fi; data history and CSV export
Our take: Editor’s pick: this is the CO₂ monitor our editor uses at home. Specs are seller claims. It measures CO₂; it doesn’t remove it.
Score breakdown
| Criterion | Score | Weight |
|---|---|---|
| Performance & features | 4/5 | 30 |
| Durability & reliability | 3/5 | 15 |
| Maintenance & upkeep | 5/5 | 10 |
| Evidence & honest claims | 3/5 | 15 |
| Value vs category (3-year cost) | 5/5 | 15 |
| Ease of use | 4/5 | 5 |
| Trial, returns & warranty terms | 3/5 | 5 |
| Lock-in (required subscriptions only) | 5/5 | 5 |
Scores are editorial, based on published specs, pricing, policies and independent research. We have not lab-tested this product. Where a policy wasn't verified we give a neutral 3.
Prices checked Oct 20, 2026. As an Amazon Associate we earn from qualifying purchases. Disclosure
Sources
Score guide: 90+ Outstanding · 80s Great · 70s Good · 60s Fair · below 60 Skip. How we score
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