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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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Buyer's guide

Best indoor air quality monitor in the UK

What to look for in an indoor air quality monitor if you live or work in the UK — and how Envora One compares against the leading consumer and prosumer options.

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
Who this is for

UK households and small organisations deciding between the well-known monitors on the market.

Feature-by-feature

Side-by-side comparison.

Where Envora One sits against the alternatives — sensors, calibration, integrations, ownership and price.

Feature Envora One Other monitors
CO₂ (NDIR) Yes — ±30 ppm + 3% Look for true NDIR — avoid eCO₂
PM2.5 (laser scattering) Yes — PM1/PM2.5/PM10 PM2.5 minimum
VOC / IAQ Raw VOC + fused score Check for raw values, not just a colour
Carbon monoxide Yes Often missing on consumer models
Calibration certificate Yes — signed per serial number Ask the vendor for paperwork
No subscription for full app Yes (home plan) Many monitors paywall integrations
API / MQTT / Home Assistant All three, first-class Often community-only
UK / EU shipping & support Free UK & EU shipping; UK support hours Check the vendor's shipping origin
Price £249 Typical UK range £150–£400

Competitor specs are based on publicly available manufacturer information at the time of writing. Check the latest product pages for current spec.

What Envora One brings

The case for Envora One.

  • British-built, UK-supported, with free UK & EU shipping.
  • Eleven measurement channels including true NDIR CO₂ and dedicated CO.
  • Factory calibrated against reference instruments with a signed certificate per serial number.
  • No home subscription, with full API/MQTT/Home Assistant included for personal households.
Best for

Pick the one that fits.

Fair recommendations for different buyer needs.

Best overall for UK buyers

Envora One. Eleven channels, calibration certificate, full integrations, no home subscription. Built and supported from the UK.

Best for radon-prone postcodes

Pair Envora One with Envora Radon (£229) — or take the Home Health Bundle at £449.

Best for landlords

Envora Fleet across your portfolio — humidity and CO₂ histories per unit, monthly reports, tenant-safe access.

FAQ

Comparison FAQ.

Is Envora One a UK company?
Yes — Envora Labs is UK-based. Hardware ships free across the UK and EU, customer support runs in UK hours, and our team replies to enquiries within one UK business day.

How do I know an air quality monitor is accurate?
Look for: NDIR for CO₂ (not eCO₂), laser scattering for PM2.5, a signed calibration certificate per serial number, documented sensor tolerances, and an API or CSV export so you can sanity-check readings against another instrument.

What is the WHO PM2.5 guideline?
The 2021 WHO global air quality guidelines recommend an annual mean PM2.5 below 5 µg/m³ and a 24-hour mean below 15 µg/m³. Most UK homes routinely exceed these — particularly during cooking and on outdoor pollution events.

What CO₂ level is too high indoors?
Below 800 ppm is good; 800–1,000 ppm acceptable; above 1,000 ppm in a closed room signals inadequate ventilation. UK schools should aim to keep average classroom CO₂ below 1,500 ppm.
Decided?

Buy Envora One — £249, one-time.

Eleven channels. Factory calibrated. No home subscription. Free UK and EU shipping, 30-day returns, 2-year warranty.

Buy Envora One — £249 See pricing in full

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