The health-first way to run your schools.

Citadel puts world-class sensors in every classroom and turns the data into clear priorities, accountable vendors, smarter spending, and a story your community can trust.

Research Led, Data Driven, People Focused

Citadel was founded by leaders who protected the health of people in the nation’s most critical environments, including the White House. We bring that same standard of care to every classroom.

Kaiterra Sensedge Go monitor on a classroom wall
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See every room

Kaiterra Sensedge Go monitors install in under a minute each, with no wiring, and can run entirely off your district network. Every classroom reports up to 17 environmental measurements around the clock, from CO2, particulates, VOCs, temperature, and humidity to occupancy and lighting.

Kaiterra platform alerts ranking rooms by severity
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Act with confidence

Citadel’s reports and expert guidance turn every reading into ranked, plain-language priorities: what to fix first, where to spend, and which vendors to hold accountable. Your district stays in control, and nothing gets bought on a guess.

Lobby display showing live indoor air quality
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Prove it and lead the story

Verify every improvement and vendor promise, track progress against your goals, and give your board and families a clear, calm record of results, with strategic communications support built in.

What we measure

The four pillars of a healthy classroom

Every classroom monitor measures up to 17 conditions across air, thermal comfort, sound and light, tracks when each room is in use, and watches for mold risk and virus risk around the clock.

Air qualityIs the air fresh and clean?CO₂, particles, VOCs and other gases
Thermal comfortToo hot, too cold or too damp?Temperature and humidity
SoundQuiet enough to teach and learn?Noise level, spikes and pitch
LightBright enough to read and focus?Brightness and color
Up to 17 measurements+Mold riskVirus risk
Close-up of a Kaiterra Sensedge Go monitor

One investment. Returns across your district.

Healthy air is a science challenge. Earning trust for the work is a communications challenge. Citadel was built to do both, so every finding becomes a decision you can defend and a result your community can see.

Verify what your HVAC and filtration investments deliver before you buy more

Cut energy waste and dispatch maintenance by live data, not complaints

Healthier classrooms, stronger attendance, and the funding that follows it

Back budget requests and grant applications with hard evidence

Give boards and parents clear, controlled views of your progress

Turn your buildings into living labs for environmental science education

Kaiterra AI

Ask your buildings anything.

Kaiterra AI answers plain-English questions about every room in your district, so your team gets clear answers in seconds instead of digging through charts.

“Which classrooms ran stuffy after lunch?”“Which schools need attention this week?”
Kaiterra AI answering a question across a portfolio of buildings

News

Insights

New Virginia Law: HB 2618 Makes School Air Quality Public. Own the Story.

News

Citadel Awarded Region 4 Education Service Center Contract

Technology and purchasing partners

See every room in one of your schools.

Tell us about your district and buildings. We’ll show you what a deployment looks like, what it costs, and how easy it is to get started.