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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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Theme
For education

Use classroom air quality data to improve ventilation, concentration and parent confidence.

Classroom CO₂ and indoor air quality evidence for better ventilation decisions, measurable cognitive lift, and the data trail governors and parents want.

Reserve Envora One Talk to us
38%
CO₂ drop, exam week
Fernwood Academy · Y9
2–5%
Cognitive lift expected
IAQ meta-analysis
£12
Per pupil per year
Amortised · 5-year hardware

A classroom that sits above 1,500 ppm does measurable harm to comprehension. Ventilation is the new chalk.

Why schools care now

DfE-graded. Cohort-measured. Parent-shareable.

The research is settled: classroom CO₂ is strongly and linearly correlated with standardised test performance. A classroom that sits above 1,500 ppm for a sustained lesson does measurable harm to comprehension and recall. Yet most schools — especially older estate — have no continuous visibility into the rooms where children spend their day.

Since 2022, DfE guidance in England has recommended CO₂ monitoring for all state classrooms. The harder question is what to do with the data. Envora ships not just a sensor but a dashboard designed for estates managers, head teachers and parents: coloured ranges, alert routing, per-room history, and a simple shareable link.

Fernwood Academy, one of our early education deployments, averaged 1,900 ppm CO₂ during Year 9 exam week before monitoring and 1,180 ppm after a re-timed window rota. That is not a hypothetical — it is the change a £3,000 deployment made to a cohort of students.

What gets in the way of learning

Five problems every classroom faces by November.

The late-morning focus cliff

A full classroom hits 2,000 ppm CO₂ before lunch on a cold-weather day. Test scores follow. This is reproducible, peer-reviewed, and directly solvable with a window rota.

The winter ventilation trade-off

Windows open = cold children. Windows closed = stuffy children. Envora shows the minimum window schedule that keeps CO₂ in band — usually a lot less than teachers fear.

The seasonal illness burst

Poor ventilation plus PM is the combination behind winter absence spikes. Envora gives school leaders visibility before parents and governors complain.

The parent trust gap

Families want evidence that the room their child sits in is monitored and responded to. Shared dashboards give them the data — not promises at parents' evening.

The sports hall hearing risk

Hall acoustics combined with whistles and PE equipment push dBA into hearing-damage territory. Envora flags it without recording a single audio frame.

The classroom dashboard

Four channels — because attainment lives in three of them.

ppm
Carbon Dioxide
The breath signal. How fresh is the air you are in?
µg/m³
Particulate Matter
See what you breathe. Down to one micrometre.
°C · %RH
Temperature & Humidity
Comfort is a range, not a number.
dBA
Sound Level
The ambient floor, measured — never recorded.
The school term

A term, week by week.

  1. Week 1 September fresh air

    Windows open · CO₂ stays under 900 ppm · baseline established.

  2. Week 6 October chill

    Windows start closing · afternoon CO₂ creeps into the 1,200 ppm band.

  3. Week 10 Winter setpoint

    Heating on · humidity under 30% · CO₂ reliably above 1,500 ppm without intervention.

  4. Week 12 Window rota deployed

    Scheduled 5-minute mid-lesson purges · CO₂ returns below 1,100 ppm average.

  5. Week 14 Exam week

    Data-backed quiet environment · cohort performance rises.

What gets routed to the head

Five classroom alerts the estate manager actually wants.

  • Classroom CO₂ crosses 1,500 ppm for more than 10 minutes
  • PM2.5 rises above 25 µg/m³ during break
  • Corridor humidity slips below 30% (winter dry)
  • Sports hall dBA sustains above 85 (hearing risk)
  • Cold-weather classroom drops below 16 °C
The DfE-grade case

What a measured school can prove to inspectors and governors.

38%
CO₂ drop exam week
Fernwood Academy, Year 9
2–5%
Expected cognitive lift
Meta-analysis across classroom IAQ studies
£12/pupil/year
Typical deployment cost
Amortised over 5-year hardware life
Per-room placement

Four placements. Two-form entry up.

  • Per classroom
    × 1
    The foundation — one device per teaching space, shared between adjacent rooms for portable intake.
  • Sports hall
    × 1
    Sound-level monitoring and PM during indoor sport.
  • Staff room · offices
    × 1
    Adult spaces — morale follows air quality too.
  • Dining hall
    × 1
    Concentrated occupancy at lunch · CO₂ and PM load.
Quiet harms

What classroom air quietly costs a cohort.

Mould & damp risk

Mould does not appear from nowhere. It is the visible end of months of sustained humidity your house has been trying to tell you about.

Read the guide

Allergies & dust sensitivity

Dust mites, pollen, pet dander and chemical irritants all have fingerprints. Envora reads them so you can manage the triggers, not just the symptoms.

Read the guide

Outdoor air events

Wildfire smoke, urban traffic peaks, garden bonfires. The wrong ventilation strategy turns a bad outdoor hour into a bad indoor week.

Read the guide
We put twelve Envora One units across Year 9. Average exam-week CO₂ dropped 38% after we re-timed the window rota. Ofsted loved the data trail.
Fernwood Academy · Head of estates
Starter pack · CO₂ and indoor air quality monitoring for schools

Education starter — 12 units

Pre-configured for co₂ and indoor air quality monitoring for schools. Deploy in an afternoon. We send the spec, the price and a fit-out note within one UK business day.

Custom starter price

No deposit · Reply within one UK business day · 25% discount for schools and charities.

FAQ

FAQ — CO₂ and indoor air quality monitoring for schools

What CO₂ level is too high in a classroom?
UK Department for Education guidance recommends average classroom CO₂ stays below 1,500 ppm during occupied periods, with peaks below 2,000 ppm. Research links sustained CO₂ above 1,500 ppm to measurable reductions in cognitive performance.

How many monitors does a school need?
One per teaching space is the gold standard. A 10-classroom pilot typically reveals the worst rooms in 30 days; a full deployment is then targeted at fixing them.

Can parents or governors see reports?
Yes — Envora Fleet supports parent-shareable summary links and per-term governor reports. Tenant-safe access shows summary CO₂ data, not raw minute-by-minute occupancy patterns.

Can Envora help with ventilation decisions?
Yes. Data-driven window rotas typically lower classroom CO₂ by 30–40% with no capital spend. Where windows alone are not enough, the data justifies MVHR retrofits to the SBM or trustees.

Is this suitable for multi-academy trusts?
Yes. Envora Fleet supports multi-academy trusts with per-school dashboards, comparison reports across the estate, centralised procurement and the 25% Fleet discount for registered education organisations.
School Fleet · 25% off

Start a classroom pilot.

10-classroom air quality pilot — devices, dashboard, alerts, 30-day ventilation report and recommendations. Hardware cost can be credited against a wider rollout. 25% off Fleet for registered schools and charities.

Start a classroom pilot See Fleet pricing

25% off for UK / EU schools + charities · 48-hour quote turnaround.