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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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Guide · 5 min

Air quality monitors without subscriptions: what to check before buying

Air quality monitors that paywall their app, history or integrations are common — and the paywall is often invisible until you have already bought the hardware. Here is a checklist before you spend £100–£400 on a device.

See Envora One
  • No home subscription
  • Factory calibrated
  • Signed calibration certificate
  • API · MQTT · Home Assistant
  • Local-only mode available
  • 30-day returns
  • 2-year warranty

Why some monitors charge a subscription

Some vendors fund cloud and app development by adding tiers to the consumer plan — typically gating long-term history (anything past 30 days), advanced alerts, API access, or integrations like Home Assistant. That is a fair model, but it is not the one most buyers expect.

Other vendors sell hardware at a higher one-time price and include the cloud features for the life of the device. Envora is in the second camp. Both work; what matters is knowing which model you are buying into.

What to check before you buy

Seven things, in priority order:

1. Is the app free? Live readings should never be paywalled.
2. Are safety alerts free? CO and dangerous PM2.5 levels must always alert without payment.
3. How much history is included? Look for 1+ years, ideally 3.
4. Is the REST API available without a subscription?
5. Is MQTT included? Some vendors do not offer first-party MQTT at all.
6. Is Home Assistant integration first-party or community?
7. What happens if you stop paying? Does the device degrade to a basic mode, lose history, or stop working entirely?

How Envora One is set up

No home subscription. Live readings, alerts, app, dashboard, history (3 years rolling), API, MQTT, CSV export, Home Assistant and firmware updates are all included for personal household use for the life of the device.

Envora makes money from selling hardware — and from Envora Fleet, the per-device subscription for organisations who need multi-site, audit, SSO and reports. Personal households do not need any of that.

See the pricing model in full.
A no-subscription air quality monitor

Envora One is £249 one-time. The home plan is included for the life of the device.

See the device
Related: Envora One · Pricing · Compare · All guides
FAQ

FAQ — Air quality monitors without subscriptions: what to check before buying

Is Envora One genuinely free to run for home users?
Yes. Live readings, alerts, app, dashboard, history, firmware updates, API, MQTT and CSV export are included for the life of the device for personal household use.

What happens if I stop using Envora?
Nothing changes — there is nothing to stop. The device keeps working, the app keeps showing live readings, and local-only mode means it runs even without an Envora cloud account.

Why do some monitors paywall the API?
Some vendors monetise the API directly (typical of products with strong B2B customers); others use the API as a lever to push consumers onto a higher plan. Envora chose to bundle it with the hardware for home users.

Are there organisation features I should be aware of?
Yes — Envora Fleet is the per-device subscription for schools, landlords, workplaces and clinics who need multi-site, RBAC, audit, SSO, reports and tenant-safe links. Pricing starts at £3 per device per month.
See the numbers yourself

Buy Envora One — £249.

The instrument these guides assume you have. Eleven channels, factory calibrated, no home subscription.

Buy Envora One — £249 See more guides

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