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The World Health Organization Says 9 PPM Is Where Health Damage Begins. CO Detectors Stay Silent Until 70.

Every home that runs gas appliances has some level of carbon monoxide. Most have non-harmful levels, but many have harmful levels. The question isn't IF you have, it's HOW MUCH. And millions of homes have TOO MUCH.

[7- Min Read]

Cutaway illustration of a family home showing carbon monoxide drifting from the basement water heater and the kitchen range into every room, with readings of 22, 18, 9, 12 and 16 PPM marked room by room.

Most homes with gas appliances sit at 1-3 PPM, which are safe levels.

But millions of American homes are sitting at 10, 15, 20, even 30-50 PPM right now.

Not from catastrophic failures. Not from old, obviously broken appliances.

From hairline cracks you'd never see. From vents that look fine but are partially blocked. From issues so subtle even HVAC technicians can miss them on routine inspection.

If you have gas appliances, there's a real chance you have a silent leak right now.

The World Health Organization says indoor carbon monoxide levels should not exceed 9 PPM over 8 hours.

That's where measurable health effects begin—especially for children, pregnant women, seniors, and people with existing heart or lung conditions.

9 PPM.

Above this level, you start seeing chronic headaches, persistent fatigue, brain fog, worsened respiratory problems, cognitive decline…

And in many cases, the potential for permanent damage to developing irreversible health problems.

But your detector? Legally allowed to ignore everything that isn't an immediate life-or-death emergency.

What They Didn't Tell You About The Potential Poison In Your Air

A hardware store aisle stacked with rows of near-identical cheap carbon monoxide alarms from different manufacturers, hanging in blister packs under fluorescent light.

Walk into Home Depot or Lowe's right now. You'll find dozens of CO detectors for $25-$40.

Look at the description on their box. It will say “Alarms at 70 PPM”.

Look at even the ones that have a screen. You'd guess they show CO levels from 1 PPM, but no. They too won't show any number below the emergency level of 70 PPM.

Why?

As long as a detector alarms at 70 PPM, the manufacturer is legally covered. There's no regulation requiring them to show you what's happening at 9, 15, or 30 PPM. No requirement to use sensors accurate enough to measure low levels that destroy your health for months.

No requirement to give you any information until you're at life-threatening levels.

The 70 PPM “minimum safety standard”, created a market for cost-effective detectors that technically “work” by alerting before danger - while leaving families completely blind to the more common event, chronic low-level exposure.

Resulting in 100,000 documented low-level CO poisonings every year, and an estimated millions of people who suffer from low-level exposure every day without knowing.

What Chronic CO Exposure Actually Does to Your Body

Infographic titled How CO Traps Our Biology, showing carbon monoxide binding to hemoglobin 200 times more readily than oxygen, and the different effects on adults, kids and seniors.

Your blood carries oxygen to every cell in your body using a protein called hemoglobin. When carbon monoxide is present, it binds to that hemoglobin 200 times more effectively than oxygen does, and blocks oxygen from getting through.

Your brain uses 20% of your body's oxygen supply. It's the most oxygen-hungry organ you have.

So when CO starts blocking oxygen delivery, your brain is the first thing that suffers.

That's why you may have started having chronic headaches that won't go away no matter how much ibuprofen you take.

Exhaustion that sleep doesn't fix.

Brain fog and cognitive decline that seemed to come out of nowhere…

And in general, the feeling that your body betrays you in many different ways.

For kids, it's worse. They get affected faster. Up to 3x faster. But while they get affected faster, their body only shows the symptoms years later. Because their body is still at its peak. Resulting in their body “aging faster” once they reach the age of 30.

For seniors, because their body is already declining, chronic low-level CO exposure shows up much faster. It accelerates cognitive decline. Respiratory issues. Balance issues. Heart problems. Even joint pain.

People go to doctors, get tests, and everything comes back normal because standard blood panels don't check for chronic CO exposure unless specifically requested.

Why Hospitals Use Low-Level CO Monitors

A medical-grade carbon monoxide monitor mounted on a hospital corridor wall, its green display reading 2 PPM and marked Normal.

Walk into any emergency room in America, and they have CO monitors showing real-time PPM readings from 0 up.

They alarm at 10-15 PPM because medical professionals know that's when intervention is needed—not when someone's hours from death, but when chronic exposure is causing measurable harm.

This technology has been available for decades.

So why don't homes have this?

Because there's no regulation requiring it. And until recently, there was no profit incentive in offering it.

Hospital-grade electrochemical sensors cost more. Consumers don't know to ask for them. Cheap detectors meet legal requirements.

The market had no reason to change.

Until now.

The First Detector Built to Hospital Standard, Not Minimum Legal Compliance

A company called Olyra decided to do something the industry hasn't done: bring hospital-grade CO detection to homes.

They built an innovative detector called TrueDetect that detects low levels of carbon monoxide. Allowing people to actually know what's in their air instead of guessing that it's fine.

The TrueDetect carbon monoxide detector plugged into a hallway wall outlet, its colour display reading 0002 PPM, with a smartphone beside it showing the same reading in the app.

TrueDetect uses the same sensors used in hospitals and industrial safety applications. These sensors detect CO starting at 1 PPM and maintain accuracy across the entire range—unlike metal oxide sensors that degrade over time and can't reliably measure low levels.

It has a digital display + Phone App

You see the actual PPM reading at all times. Constantly. So you know what you're breathing right now, not what it was the last time you had an inspection. And once levels rise, it sends you a notification to your phone, explaining what it means and what to do.

It has an Early Warning System for Emergency

TrueDetect alarms at 30 PPM—the threshold hospitals use for intervention—not 70 PPM when you're already in danger. That gives you time to ventilate, check appliances, and protect your family before chronic exposure causes lasting damage.

10-Year Lifespan with Expiration Alert

Most cheap detectors expire after 5-7 years and never tell you. TrueDetect lasts 10 years and actively alerts you when it's time to replace it. You're never left unprotected without knowing.

Plug-and-Play Installation

No wiring. No batteries to replace constantly. Plug it in. It works. The display lights up, shows your baseline CO level, and monitors continuously from that moment on.

When Families Finally See the Number

Some people plug it in and see 1-3 PPM. Relief floods through them. They finally know they're safe and that they will stay safe for the next 10 years.

This is the ideal.

But for as much as 60% of our customers, they see a number that instantly explains months or even years of suffering.

Recently, one mother plugged it in and saw 20 PPM across several parts of her house.

The TrueDetect detector plugged into a utility room outlet beside a gas water heater, its display reading 0020 PPM with the bar lit into the amber range.

A leak from her water heater.

She'd been dealing with chronic headaches for eight months. Multiple doctors. Every test came back normal. They told her it was stress.

Her old detector? Green light. Never made a sound.

After she got TrueDetect and could finally see the number, she called an HVAC tech and found out the water heater venting was partially blocked.

Within 2 weeks, CO levels stayed at 1-3 PPM.

Her headaches stopped. She slept better through the night. And she felt 10 years younger.

And I hope you'll have a similar story too.

If you've been dealing with chronic headaches, unexplained fatigue, brain fog that makes everything harder, kids with asthma that won't stabilize, concentration problems at school, or symptoms every doctor says is "just stress" or “getting older”...

You deserve to finally see what's been causing it. And fix it. Once and for all.

You Have Two Choices Right Now

A split image. On the left the same family sits in a grey living room looking drained, painkillers on the table and a plain round alarm on the wall showing only a green light. On the right the room is bright, the family is well and laughing, and a TrueDetect detector in the wall outlet is displaying the actual PPM reading.

You can keep trusting the number on your detector's screen that's programmed to stay silent while you breathe 15, 20, or 30 PPM every day.

Or you can see the actual number.

If you have gas appliances and heat your home with gas in the cold months, there's carbon monoxide in your air right now. That's not a scare tactic - it's combustion physics.

The only question is, how much?

Your current detector won't tell you. It's built to meet minimum legal requirements, not protect your health.

TrueDetect shows you what hospitals see. What HVAC technicians see. What firefighters see when they test your air.

The real number. In real-time. So you can make informed decisions about ventilation, appliances, and your family's safety.

Not when you're at 70 PPM and already in danger. Right now. At any level.

You've already spent money trying to solve unexplained symptoms. Doctor visits. Specialists. Tests that come back normal. Medications that treat effects, not causes.

If the answer is in your air—and you're living at 20 PPM every day while your detector stays silent—how much more time and money will you spend before you check?

The families I see in my ER all say the same thing: "I wish I had known sooner."

Don't be one of them.

See the number. Know what you're breathing. Take control.

Advertisement. This page is an advertisement and not a news article, blog post, or consumer protection update. The author is a paid spokesperson and this article is written in the voice of a persona for illustrative purposes.

Individual experiences vary and are not a guarantee that anyone will obtain the same results. Carbon monoxide detectors are safety devices, not medical devices, and nothing on this page is medical advice. If you suspect a carbon monoxide leak, leave the building immediately and call your local emergency number.

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