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Envora Labs
Reserve Envora One
Devices
Envora One Available Eleven channels · one fused IAQ score Envora Radon Coming soon Real-time radon · 0–2,000 Bq/m³
Capabilities
Features Alerts, history, dashboards Developers API · MQTT · Home Assistant Envora Fleet Multi-device · org · SSO · audit
All sensors
Overview of the eleven measurements
Carbon Dioxide ppm The breath signal. How fresh is the air you are in? Carbon Monoxide ppm Low-level exposure, tracked over time. Particulate Matter µg/m³ See what you breathe. Down to one micrometre. Temperature & Humidity °C · %RH Comfort is a range, not a number. Barometric Pressure hPa Weather, altitude, storms — all in one number. VOC & IAQ Index index Every gas. Every particle. One honest score. Sound Level dBA The ambient floor, measured — never recorded. Ambient Light lx Your circadian signal, measured.
For your space
All solutions
 Home Kitchens, bedrooms, nurseries, basements. Envora shows you what you breathe — and tells you how to fix it, usually for free. Office & Co-work CO₂ is the single strongest environmental lever on office productivity — and the cheapest to fix. Envora gives facilities teams and founders the number to argue with. CO₂ and indoor air quality monitoring for schools Classroom CO₂ and indoor air quality evidence for better ventilation decisions, measurable cognitive lift, and the data trail governors and parents want. Labs & Clinics Envora One is precise enough for laboratories, clinics and regulated spaces, and comes with a signed calibration certificate per device ID. Studios & Gyms Hot yoga, spin, HIIT and small studios generate extreme humidity and CO₂ loads. Envora tells you how your ventilation is holding up — live, per-room, per-class. Podcasts & Studios Envora flags the HVAC hum, the fridge compressor, the neighbour's drill — and the concentration drift that flattens your delivery — before the tape picks any of it up. Landlords & Letting Continuous, timestamped indoor air quality records for every unit you manage — so damp disputes end in data, not arguments.
What it protects against
All protection guides
 Mould & damp risk Invisible until it is not. Allergies & dust sensitivity The 40–50% RH sweet spot. Long-term toxic gas exposure What you cannot smell, Envora can. Cooking pollution Your kitchen is an industrial chimney. Sleep & bedroom air Sleep is an environmental sport. Winter dry air Heated air is parched air. Outdoor air events When the air outside is worse than inside.
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Developers

Home Assistant CO₂, PM2.5 and VOC sensor

A Home Assistant–first indoor air quality monitor with eleven sensor entities per device — CO₂, PM2.5, VOC, CO, climate, light, sound. MQTT auto-discovery means setup takes minutes.

Developer overview
  • REST API · documented
  • MQTT native broker
  • Home Assistant first-class
  • Local-only mode
  • CSV export
  • Webhooks · signed

Eleven sensor entities per device

Each Envora One creates eleven sensor entities in Home Assistant:

- CO₂ (NDIR, ppm)
- PM1, PM2.5, PM10 (µg/m³)
- VOC (index)
- CO (ppm)
- Temperature (°C)
- Humidity (%RH)
- Atmospheric pressure (hPa)
- Light (lux)
- Sound level (dBA)
- Fused IAQ score (0–100)

Plus device-level entities for last-seen, firmware version and signal strength. Each entity has the appropriate `device_class`, `unit_of_measurement` and `state_class` for native Home Assistant graphing and statistics.

Setup in Home Assistant

1. Plug in your Envora One. Connect to your WiFi via the setup app.
2. Point the device at your MQTT broker (host, port, optional credentials).
3. Home Assistant auto-discovers the device within 5–10 seconds.
4. The eleven entities appear in Settings → Devices & Services → MQTT.
5. Add the device to a dashboard, build automations, push to InfluxDB.

No custom integration, no HACS install, no manual YAML configuration. The auto-discovery topics are emitted under homeassistant/sensor/envora_{device_id}_{channel}/config on first boot.

Example automations

CO₂-driven ventilation: open a smart vent or run an MVHR when bedroom CO₂ exceeds 1,500 ppm.

PM2.5-driven purifier: turn on a smart-plug-controlled air purifier when kitchen PM2.5 exceeds 35 µg/m³.

Humidity-driven dehumidifier: run a dehumidifier when bathroom RH stays above 70% for more than 30 minutes after a shower.

Mould-risk alert: push a notification when sustained RH against the wall in a north-facing bedroom exceeds 75% for 4+ hours.

All of these are standard Home Assistant automations against Envora's MQTT-published entities.
A Home Assistant–first air monitor

Envora One — £249. Eleven sensor entities per device, native MQTT, no custom integration required.

Developer docs
More for developers: Indoor air quality monitor API · MQTT air quality sensor
FAQ

FAQ — Home Assistant CO₂, PM2.5 and VOC sensor

Do I need HACS or a custom integration?
No. Envora One uses Home Assistant's native MQTT auto-discovery — no HACS install, no custom YAML.

Does it work with the Home Assistant Energy dashboard?
Not directly — Envora One is air quality, not energy. But Envora data can be referenced from energy dashboards (e.g. ventilation-driven energy use correlations).

Will Envora keep working if Home Assistant goes down?
Yes. Envora One publishes independently of Home Assistant. The device dashboard, app and direct API all keep working; Home Assistant simply reconnects to the MQTT broker when it returns.

Does Envora support Z-Wave / Zigbee?
No — Envora is WiFi + MQTT. If you need Z-Wave or Zigbee for low-power sensors elsewhere, those run as separate ecosystem entities in Home Assistant alongside Envora.
Buy Envora One

A serious air monitor for developers.

API, MQTT, Home Assistant, local-only mode, CSV export. £249 one-time, no home subscription.

Buy Envora One — £249 Developer docs

Free UK & EU shipping · 2-year warranty · Reply within one UK business day.