If you breathe, you need Purity Guardian.
PurityGuardian Shield
Purity Guardian
If you breathe, you need Purity Guardian.

If you breathe,
you need
Purity Guardian.

Real-time indoor air quality monitoring for homes and commercial spaces — scored against EPA, ASHRAE, and CDC/NIOSH standards. Intelligent alerts, AI reports, and filtration solutions.

Get Free Air Report See How It Works
Standards Met
EPA Guidelines ASHRAE 62.1 & 241 EPA & CDC IAQ Standards ASHRAE 160 Mold Risk
Live Environmental Monitor — Detecting your location…
Fetching EPA air quality data…
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📍 Detecting your location…
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Air Quality Index
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Ozone (O₃)
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Overall Status
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Barometric Pressure
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Detecting…
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Pressure Change Detected
Rapid barometric pressure changes are a clinically recognized migraine trigger.
Rapid barometric pressure changes are a clinically recognized migraine trigger. Studies show up to 75% of migraine sufferers report weather-related triggers. Changes of more than 0.2 inHg (inches of mercury — a unit of atmospheric pressure) within 6 hours are associated with increased headache and migraine frequency.
💡 Air Quality Science

Did You Know Your Furnace
Is An Air Purifier?

457%
more airborne particle capture
with the right filter + continuous fan
❌ Standard Setup (What Most Homes Do)
+82%

More airborne particles — not fewer. Most homes use cheap fiberglass filters with the fan on AUTO. Real-world testing in 28 homes showed this actually makes air quality WORSE — not better.

A terrifying result from 28 real homes
✅ High-Efficiency Filter + Continuous Fan
457%

457% Better Air. Just two changes: upgrade to a MERV 13/14 filter and run your fan 24/7 instead of AUTO. That's it. Your HVAC becomes a whole-house air purifier.

Proven across 5 states, 28 homes
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Allergens & DustContinuous filtration captures pollen, pet dander, and dust mites that settle between heating cycles.

🦠

Bacteria & VirusesThe American Lung Association confirms: more air circulation means less pathogen spread and reduced airborne transmission risk.

🔥

Wildfire & Smoke EventsYour first defense during smoke events isn't an air purifier you buy — it's the filter already in your furnace running full-time.

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Eliminates Hot/Cold SpotsContinuous air circulation equalizes temperatures across rooms — a side benefit of improved IAQ.

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Modern ECM Motors Make It PracticalNewer ECM blower motors are highly efficient at low speed, making continuous operation cost-effective for most households.

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Upgrading Filters Compounds the GainMoving from MERV 8 to MERV 13/14 increases PM2.5 capture by 290–380% on its own — combine it with continuous fan for maximum effect.

Based on a field study by 3M and the American Lung Association Health House Project (2000) — 28 homes tested across 5 states. Study evaluated particle capture rates across filter efficiency levels and fan operation modes. Results showed high-efficiency filters combined with continuous fan operation delivered 457% more airborne particle capture versus standard fiberglass filters on auto mode. Fiberglass filters on continuous fan actually increased airborne particle counts by 82%.

MERV 13/14 vs. standard MERV 8 filters — upgrading filter efficiency alone increases clean-air-delivery-rate by 290–380% for PM2.5 particles, per peer-reviewed research published in Building and Environment journal.

Stop guessing — see the difference in real time.
Monitor your air quality before and after continuous fan operation to confirm the improvement.
Start Monitoring for Free Shop MERV Filters
Air Quality 101

What's silently
in your air?

Most people don't realize how many invisible threats float around their home every day — until it shows up in their lungs.

Did you know?
PM2.5
Particles 30× smaller than a human hair. They slip past your lungs' defenses and lodge deep in your bloodstream. There's no symptom until the damage is done.
Heart attacks, strokes, asthma attacks
Sources: cooking, candles, wildfire smoke, fireplace, dusty HVAC returns
Did you know?
CO₂
When CO₂ climbs past 1000 ppm, your brain starts slowing down — without you noticing. You feel tired, can't focus, and blame it on "Monday." It's actually your air.
Fatigue, headaches, 40% drop in decision quality
Sources: people breathing, gas stoves, poor ventilation, closed rooms
Did you know?
VOCs
Gases released by common household products — many of which never fully break down indoors. Your fresh paint smell? That's chemicals entering your bloodstream.
Respiratory irritation, headaches, long-term organ risk
Sources: paint, varnish, furniture, cleaning products, air fresheners, new carpet
#1 non-smoker killer
Radon
You can't see it, smell it, or taste it. It seeps up through cracks in your foundation every day. The EPA estimates it causes 21,000 lung cancer deaths per year — more than drunk driving.
#1 cause of lung cancer in non-smokers
Sources: soil beneath homes, rock formations, well water, basements
Did you know?
Mold Risk
Mold doesn't need much — just a few days of elevated humidity above 60%. It grows hidden inside walls and under floors, silently damaging your home and your health simultaneously.
Allergies, asthma, property damage, musty smells
Sources: humidity >60%, water leaks, poor ventilation, HVAC condensation
Did you know?
Humidity
Indoor humidity is a two-way threat. Above 60% → mold and dust mites. Below 30% → cracked skin, bloody noses, and respiratory irritation. Most homes spend time in both danger zones.
Too high = mold; too low = respiratory distress
Optimal range: 30–50% RH. Bad ranges: cooking, showers, unvented dryers
Platform Features

Not just monitoring.
Active protection.

With PurityGuardian, you're not just watching numbers — you're taking control and living in the clean, healthy space you deserve.

Continuous Environmental Monitoring

Real-time tracking of PM2.5, CO₂, VOCs, humidity, temperature, and mold risk indicators. Whether it's a school gymnasium or your home, PurityGuardian never sleeps — so you always know what you're breathing.

Automated Compliance Reports

AI-generated professional IAQ reports aligned with ASHRAE 62.1, ASHRAE 241, and EPA standards. Compliance documentation for facilities directors and building managers — no manual write-ups, no guesswork.

Intelligent Mold Risk Scoring

Proactive mold risk assessment using temperature, humidity, and dew point analysis per ASHRAE 160. Catch conditions before mold forms — protecting occupants, students, and your property before remediation becomes necessary.

Direct Filtration Solutions

When action is needed, PurityGuardian connects you directly to high-quality filtration systems. Simple to order, easy to maintain — making it straightforward to create the clean, healthy space you deserve.

Who We Serve

Built for professionals and homeowners

Whether you manage a 10,000 sq ft facility or want clean air at home, PurityGuardian scales to your mission.

🏫

School & Facilities Directors

Meet ASHRAE 241 ventilation requirements. Protect students and staff with documented air quality reports. Respond to complaints with data, not guesswork.

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Building & Property Managers

Monitor air quality across multiple commercial spaces from one dashboard. Automate compliance documentation and reduce liability with continuous environmental oversight.

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Health-Conscious Homeowners

You deserve clean air too. Know what your family breathes, detect mold risk before it starts, and get actionable insights to create a healthier home environment.

Standards & Authority

Built on the standards that protect lives

PurityGuardian isn't guessing at safe air. Every alert, every score, every report is grounded in the same standards used by the EPA, ASHRAE, and the institutions that set the rules for healthy environments.

EPA & CDC IAQ Standards — Aligned with national EPA indoor air quality guidelines and CDC/NIOSH workplace air quality recommendations applicable to buildings and schools across the US.

ASHRAE 160 Mold Prevention — Mold risk scoring uses the same criteria as the industry standard for moisture-related building design.

EPA & ASHRAE 62.1/241 — Reports and alerts reference EPA thresholds and ASHRAE ventilation standards so your documentation is audit-ready.

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EPA

Indoor Air Quality Guidelines

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ASHRAE 62.1

Ventilation for Acceptable Indoor Air Quality

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ASHRAE 241

Control of Infectious Aerosols

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ASHRAE 160

Moisture Control & Mold Prevention

90%
Of time people spend indoors — where air quality matters most
$5B+
IAQ monitoring market in 2025, growing 9% annually
24/7
Continuous monitoring — never miss a dangerous condition shift
RT
Real-time alerts the moment air quality falls below safe thresholds
How It Works

Simple to start. Powerful in practice.

1

Enter Your Data

Input your environmental readings — PM2.5, CO₂, VOCs, humidity, and temperature — or connect your monitoring hardware for automated ingestion.

2

PurityGuardian Analyzes

AI cross-references your data against EPA guidelines, ASHRAE standards, and mold risk models to generate an accurate environmental health picture.

3

Take Control

Get your professional IAQ report, clear action recommendations, and direct access to filtration solutions if remediation is needed. You're in control.

You're not just monitoring your environment — you're taking control of it.

Generate a professional IAQ report in minutes. Free to start. No sensors required.

Start Your Free IAQ Report Shop Air Filters
📊 Free Air Quality Insights

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